SikaBiresin
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PRODUCT DATA SHEET
SikaBiresin L323
Version 01.01 (09 – 2023), en_US
PRODUCT DATA SHEET
SikaBiresin L323 (Formerly EL-323TC)
Lightweight Composite Tooling Compound/ Tooling Dough
TYPICAL PHYSICAL PROPERTIES (FOR FURTHER VALUES SEE SAFETY DATA SHEET)
DESCRIPTION
SikaBiresin
L323 is an epoxy-based,
composite tooling compound designed for
the construction of tools, jigs, models,
sandwich structures and other tooling or
modeling applications. When mixed the
system results in a very pliable elastic
compound which can be applied to the
tool surface without crumbling or cracking.
SikaBiresin
L323 can be applied at any
thickness above ” without excessive
exotherm. Tools constructed with
SikaBiresin L323 maintain a very high
degree of dimensional stability, are light in
weight, and can be machined as well as
drilled and tapped. The SikaBiresin
L323
resin and harder are both syntactic dough
compounds, which minimize splash
hazards, in comparison to standard, room
temperature epoxy laminating systems.
PRODUCT BENEFITS
– Colored resin and hardener for mix
indication
– Pliable and formable with no cracking or
crumbling when mixed
– Can be machined or drilled and tapped
– Low density (lightweight)
– Very low coefficient of thermal expansion
(CTE) for excellent dimensional stability
– Low exotherm build
AREAS OF APPLICATION
SikaBiresin
L323 is ideal for lightweight
composite sandwich tools and structures. It is used
for tools, jigs, fixtures, models, and other
application types. SikaBiresin
L323 can also be
used for artistic formable models.
Tests with actual materials and conditions
have to be performed to ensure satisfactory
performance.
Properties
SikaBiresin L323 (A)
Resin
SikaBiresin L323 (B)
Hardener
Composition Epoxy Amine
Mix ratio by weight
by volume
100
100
100
93
Aspect Dough Dough
Color Yellow Blue
Color (mixed) Green
Density at 77 F (25 C) (mixed) .025 lbs/in
3
(.690 g/cc)
Work life (400g) at 77 F (25 C) 2.0 – 2.5 hours
Peak Exotherm (1 lb. mass) 105 F (41 C)
SikaBiresin
L32
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Sika Corporation
30800 Stephenson Highway
Madison Heights, MI 48071
U.S.A.
Telephone: +1 248- 577-0020
Email: tsmh@us.sika.com
www.sikausa.com
TYPICAL MECHANICAL AND THERMAL PROPERTIES
(A)
Sandwich construction with three layers of 10 oz glass fabric laminate on either side of of SikaBiresin L323, and a single surface coat
Cure schedule: Cured 7 days at room temperature.
PROCESSING
For sandwich structure tools, it is necessary to
apply a slurry mixture, which serves as a bond
coat, between the laminate and SikaBiresin
L323 tooling compound. For more detailed
instructions, please reference the Composite
Sandwich Tool Construction Application
Guide.
Normal health and safety precautions should be
observed when handling these products:
Ensure adequate ventilation
Wear gloves, glasses, and protective clothes
For further information, please consult the Safety
Data Sheets
STORAGE CONDITIONS
Shelf life of resin and hardener is 12 months
when stored in original, unopened containers
between 65-77 F (15 – 25 C). Any opened can
must be tightly closed.
PACKAGING INFORMATION
Packaging information is available upon
request. Please contact your local Sika sales
representative.
FURTHER INFORMATION
Advice on specific applications will be given on
request. To contact Sika Corporation s Industry
Technical Services Department, send an email to
tsmh@us.sika.com. Copies of Safety Data
Sheets and Product Data Sheets are available
upon request.
BASIS OF PRODUCT DATA
All technical data stated in this document are
based on laboratory tests. Actual measured data
may vary due to circumstances beyond our
control.
ENVIRONMENTAL, HEALTH AND SAFETY
For further information and advice regarding
transportation, handling, storage and disposal of
chemical products, user should refer to the
actual Safety Data Sheets containing physical,
environmental, toxicological and other safety
related data. User must read the current
actual Safety Data Sheets before using any
products. In case of an emergency, call
CHEMTREC at 1-800-424-9300, International
703-527-3887.
LEGAL DISCLAIMER
Prior to each use of any product of Sika Corporation,
its subsidiaries or affiliates ( SIKA ), the user must
always read and follow the warnings and
instructions on the product s most current product
label, Product Data Sheet and Safety Data Sheet
which are available at usa.sika.com or by contacting
SIKA s Technical Service Department via email at
tsmh@us.sika.com. Nothing contained in any SIKA
literature or materials relieves the user of the
obligation to read and follow the warnings and
instructions for each SIKA product as set forth in the
current product label, Product Data Sheet and
Safety Data Sheet prior to use of the SIKA product.
SIKA warrants this product for one year from date
of installation to be free from manufacturing
defects and to meet the technical properties on the
current Product Data Sheet if used as directed
within the product s shelf life. User determines
suitability of product for intended use and assumes
all risks. User s and/or buyer s sole remedy shall be
limited to the purchase price or replacement of this
product exclusive of any labor costs. NO OTHER
WARRANTIES EXPRESS OR IMPLIED SHALL APPLY
INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. SIKA SHALL NOT BE LIABLE
UNDER ANY LEGAL THEORY FOR SPECIAL OR
CONSEQUENTIAL DAMAGES. SIKA SHALL NOT BE
RESPONSIBLE FOR THE USE OF THIS PRODUCT IN A
MANNER TO INFRINGE ON ANY PATENT OR ANY
OTHER INTELLECTUAL PROPERTY RIGHTS HELD BY
OTHERS. Sale of SIKA products are subject to the
Terms and Conditions of Sale which are available at
https://usa.sika.com/en/group/SikaCorp/termsand
conditions.html or by calling +1 800-933-7452.
Properties, Test Method
SikaBiresin L323 (A)
Resin
SikaBiresin L323 (B)
Hardener
Hardness, shore D ASTM D2240 60
Volumetric weight .025 lbs/in
3
(.690 g/cc)
Flexural strength, ASTM D790
A
13,050 psi (90 MPa)
Flexural modulus, ASTM D790
A
1,027,000 psi (7,081 MPa)
Compressive Strength, ASTM D695
A
6,144 psi (42 Mpa)
Notched Izod Impact Strength, ASTM D256
A
20.9 In-lbs
Coefficient of thermal expansion (TMA) 3 ppm/ F (6 ppm/ C)