by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
Description
HexWeb
HRH-10
is manufactured from NOMEX
aramid fiber sheets. A thermosetting adhesive is used to
bond these sheets at the nodes, and, after expanding to the hexagonal or OX-Core
configuration, the block is
dipped in phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide
range of cell sizes, paper thicknesses, and densities can be produced. The standard product line is shown under
Mechanical Properties.
Features
High strength at low densities
Small cell sizes at low densities
Damage resistant under normal shop use
Formable
Fire-resistant (self-extinguishing)
Water and fungus resistant
Excellent dielectric properties
Good bonding surfaces
Good thermal and electrical insulator
Applications
HexWeb
HRH-10
has been widely accepted throughout the aerospace industry and several commercial areas
as a very tough, environment resistant core material in sandwich panels. It has been designed and used in flat
and contoured shapes, with a wide variety of facing materials and adhesives, and it has extensive service in both
structural and nonstructural parts. Most of the interior panels of commercial jets, such as the 737, 747, 777,
767, 787, A320, A350, A380 etc., are made with this core material primarily because of its resilience, small cell
size/low density combination, and its fire resistance. Exterior aircraft parts such as radomes, fairings, helicopter
blades, flaps, etc., are designed with HexWeb
HRH-10
because of the features listed above. Surfboards
and high performance boats are but two additional applications where this core has been used because of its
toughness and resistance to corrosive attack. The OX-Core
configuration is a hexagonal HexWeb
honeycomb
that has been over expanded in the W direction, providing a rectangular cell shape that facilitates curving or form
in the L direction.
Standard Dimensions
HexWeb
HRH-10 honeycomb is available in the following standard sizes:
Products L W Block T (in) T minimum
All HRH-10
Materials
48 in. +/-2 in.96 in. +/-6 in. 20 or 32
0.125 in.
Thickness Tolerance Standard tolerances on cut thickness are as follows: 0.125 in. to 2.000 in. tolerance will be 0.006 in. 2.001 in. to 3.000 in. tolerance will be 0.010 in. 3.001 in. and over tolerance will be 0.125 in.
Special thickness tolerances as well as other L, W, and T dimensions are available upon special request.
1
Copyright 2017 Hexcel Corporation All Rights Reserved.
Product Data Sheet
2
Type Designation
HexWeb
HRH-10
honeycomb is designated as follows:
Material Cell Size Density
Example: HRH-10 1/8 3.0
Where:
HRH-10
– designates honeycomb type
1/8 – is the cell size in inches
3.0 – is the nominal density in pounds per cubic foot
Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Direction of Expansion, or direction
perpendicular to the ribbon
Images for explanation only and do not represent actual appearance.
Availability
HexWeb
HRH-10
is supplied as follows:
SHIPPING TERMS: FCA Hexcel, Casa Grande, AZ, USA (Incoterms 2010)
MATERIAL TITLE TRANSFER: Hexcel, Casa Grande, AZ, USA
Lead times will vary with the particular core type selected.
The information in this Data Sheet is subject to change without notice.
Contact your nearest Hexcel Sales Office for delivery information.
Special Configuration and Shapes
Honeycomb cores can be custom designed with nonstandard mechanical property combinations to meet a
variety of special applications. In addition to the hexagonal and over expanded (OX) cell shapes, HexWeb
HRH-10
is available in Flex-Core
, a very flexible core material. (See Flex-Core
Data Sheet) HexWeb
HRH-
10
can be provided machined or formed to your specific requirements, including flat pieces cut to size, simple
tapers, edge chamfering, double reliefs, or machining to complex and compound curvatures. Hexcel has
unique capabilities to machine parts to unusual contours and to shape honeycomb by a variety of heat-forming
techniques. Contact the nearest Hexcel Sales Office for additional information.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
W
direction
L
direction
T
Hexagonal Cell Overexpanded Cell
W
direction
L
direction
T
Product Data Sheet
3
Specifications
HexWeb
HRH-10
has been evaluated and approved for numerous corporate specifications and meets the
requirements of SAE specifications AMS-3711 and AMS-81986. In addition, HexWeb
HRH-10
meets the
following parameters and properties:
Configuration – The cell size of hexagonal core will give the nominal cell dimensions in inches across the flats
(nodes) of the cell. Cell size determination will be made by measuring the length of 10 consecutive cells in 6
random locations and averaging the results. Double laps will be permitted as long as the core blankets are within
density tolerance. Unbonded nodes will be permitted to the extent that no opening larger than three times the
nominal cell size is created and the minimum mechanical properties are obtainable.
Density – The tolerance on honeycomb density when measured on minimum of 100 cubic inches of core will be
10%.
Flame Retardance – HexWeb
HRH-10
will meet the self extinguishing classification of FAA Air Crash
Worthiness Rules and Regulations Section 25.853.
Water Migration – HexWeb
HRH-10
does not exceed one cell water migration in 24 hours when tested per
AMS STD-410.
Mechanical Properties – The table on the next page lists the HexWeb
HRH-10
product line and mechanical
properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the
mean average of a relatively large number of test values obtained from many blocks of HexWeb
honeycomb.
The minimum properties represent recommended minimum average specification values.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
4
Mechanical Properties of HexWeb
HRH-10
at Room Temperature
Typical Values Represented Below
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Hexcel Honeycomb
Designation
Material Cell Size Density
Compressive Plate Shear
Bare Stabilized L Direction W Direction
Strength psiStrength psi
Modulus
ksi
Strength psi
Modulus
ksi
Strength psi
Modulus
ksi
typtyptypmin typmin typ typmin typmin
Hexagonal
HRH-10 – 1/8 – 1.8 1058511595 8 90 75 3.8 50 40 1.5
HRH-10 – 1/8 – 3.0 300235325270 20 175155 6.0 10085 3.5
HRH-10 – 1/8 – 4.0
(2.5mil)
520400575470 28 255225 8.6 140115 4.7
HRH-10 – 1/8 – 4.0
(2.0mil)p*
550430600500 28 220200 7.7 125100 4.3
HRH-10 – 1/8 – 5.0 700560770620 37 325275 10.2 175150 5.4
HRH-10 – 1/8 – 6.0 10508501125925 60 385330 13.0 200170 6.5
HRH-10 – 1/8 – 8.0 1675137018301450 78 480400 16.0 260210 9.5
HRH-10 – 1/8 – 9.0 2000152521001600 90 515425 17.5 300250 11.0
HRH-10 – 3/16 – 1.8 12095130105 8 90 75 3.8 50 40 1.9
HRH-10 – 3/16 – 2.0 120100140105 11 11090 4.3 60 45 2.1
HRH-10 – 3/16 – 3.0 300235325270 20 175140 6.5 10085 3.4
HRH-10 – 3/16 – 4.0 500430540470 28 245215 7.8 140110 4.7
HRH-10 – 3/16 – 6.0 9357801020865 60 420370 13.0 225200 6.5
HRH-10 – 1/4 – 1.5 80 65 90 75 6 70 55 3.0 35 25 1.3
HRH-10 – 1/4 – 2.0 140115155125 11 10585 4.0 50 40 2.0
HRH-10 – 1/4 – 3.1 285240310265 21 185160 6.5 90 75 3.0
HRH-10 – 1/4 – 4.0 440360480390 28 250205 8.0 125100 3.5
HRH-10 – 3/8 – 1.5 95 7510580 6 70 55 3.0 35 25 1.5
HRH-10 – 3/8 – 2.0 140115155125 11 90 72 3.7 55 36 2.4
HRH-10 – 3/8 – 3.0 290240320270 17 185160 5.6 95 80 3.5
OX-Core
HRH-10/OX – 3/16 – 1.81108512095 7 65 45 2.0 70 50 3.0
HRH-10/OX – 3/16 – 3.0320260350285 17 11595 3.0 135110 6.0
HRH-10/OX – 3/16 – 4.0600500650550 26 130105 4.6 150130 8.4
HRH-10/OX – 1/4 – 3.0350280385310 17 11090 3.0 135110 6.0
Test data obtained at 0.500 inch thickness.
p = Preliminary values based on limited data
Other cell sizes, densities, and dimensions may be available on special request. Please contact your nearest Hexcel Sales Office for additional information.
One block minimum buy may apply.
Product Data Sheet
5
Additional Properties
The following properties of HexWeb
HRH-10
were obtained on representative production materials.
Dielectric Constant
The dielectric constant of a few core types has been measured at a frequency of 9375 MHz. Polarization parallel
to both the L and W direction was used.
Core Density
Polarization Parallel to L Polarization Parallel to W
E Parallel L E Parallel W E Parallel L E Parallel W
1.5 1.09 1.09 1.04 1.03
2.0 1.10 1.10 1.05 1.04
3.0 1.11 1.11 1.07 1.05
4.0 1.13 1.13 1.10 1.07
5.0 1.15 1.15 1.14 1.09
6.0 1.19 1.19 1.18 1.11
Thermal Conductivity Several honeycomb cores have been tested for thermal conductivity. The figure to the right shows the results of this evaluation for HexWeb
HRH-10
. The thermal conductivity
constant varies with cell size and core thickness because the air convection affects inside the cells. Note the following values were obtained with the heat flow from top to bottom of the panel.
Properties at Elevated Temperatures
HexWeb
HRH-10
has been tested for shear and
compressive strength at elevated temperatures and time
exposures up to 500 hours. Because the NOMEX
softens
between 450 F to 500 F, the properties drop off rapidly at
those temperatures; however, when returned to ambient
conditions, most of its original strength is retained.
Copyright 2017 Hexcel Corporation All Rights Reserved.
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
Product Data Sheet
6
ATU 123 US NV17 – DS 4000
2017 Hexcel Corporation All rights reserved. Hexcel Corporation and its subsidiaries ( Hexcel ) believe that the technical data and other information
provided herein was materially accurate as of the date this document was issued. Hexcel reserves the right to update, revise or modify such technical data and
information at any time. Any performance values provided are considered representative but do not and should not constitute a substitute for your own testing of
the suitability of our products for your particular purpose. Hexcel makes no warranty or representation, express or implied, including but not limited to
the implied warranties of merchantability and fitness for a particular purpose, and disclaims any liability arising out of or related to, the use of or
reliance upon any of the technical data or information contained in this document.
NOMEX
is a registered trademark of E.I. DuPont de Nemours, Wilmington, Delaware.
For more information
Hexcel is a leading worldwide supplier of composite materials to aerospace and industrial markets.
Our comprehensive range includes:
For US quotes, orders and product information call toll-free 1-888-611-4038. For other worldwide sales office
telephone numbers and a full address list, please go to:
http://www.hexcel.com/contact/salesoffice
HexTow
carbon fibers
HexForce
reinforcements
HiMax
multiaxial
reinforcements
HexPly
prepregs
HexMC
molding compounds
HexFlow
RTM resins
Redux
adhesives
HexTool
tooling materials
HexWeb
honeycombs
Acousti-Cap
sound
attenuating honeycomb
Engineered core
Engineered products
HexWeb
HRH-10
Aramid Fiber/Phenolic Resin Honeycomb
by | Sep 27, 2025
