80EL337A-D_TDS.pdf

– PRODUCT BULLETIN

www.axson-technologies.com 800.344.7776 axsonmh@axson.com
31200 Stephenson Hwy Madison Heights, MI 48071 Ph 248.588.2270 Fax 248.588.5909

DESCRIPTION
EL-337 is an improved, health-safe, two component, filled, non-staining, high temp epoxy laminating system specifically
developed for room temp hardening (B Stage) with high temp properties for high temp tooling applications. EL-337 has
excellent handling properties and fabric wet-out to produce a void free tool with high dimensional stability. EL-337 can be
used in the construction of large or small tools, as well as production parts. EL-337 can also be used with ADTECH High
Temp Surface Coats ES-219 and ES-229. Tools made with EL-337 can be used at continuous temperature of 320 F
(160 C), and intermittent temperatures up to 375 F (191 C). While EL-337 will gel at room temp, it must be post-cured to
achieve ultimate strength. The system contains no MDA or VCHD. Typical applications include: vacuum form molds,
prototype injection molds, high temperature bonding fixtures, spray metal molds, compression molds, high
temperature laminated molds and parts to be used in high temp applications.

TYPICAL HANDLING CHARACTERISTICS @ 77 F (25 C)
Mix Ratio (parts by weight) ……………………………………………………………………………………………………….. 100R/16H
Mix Ratio (parts by volume) ………………………………………………………………………………………………………. 4.86R/1H
Specific Gravity ……………………………………………………………………………………………………………………….. 1.26 g/cc
Mixed Viscosity ……………………………………………………………………………………………………………………….. 3000-5000 cps
Work Life (232 gram mass) ………………………………………………………………………………………………………. 45-60 minutes
Demold Time …………………………………………………………………………………………………………………………… 16-24 hours
Complete Cure ………………………………………………………………………………………………………………………… 3-5 days
Resin Color……………………………………………………………………………………………………………………………… Gray
Hardener Color………………………………………………………………………………………………………………………… Amber
Mixed Color …………………………………………………………………………………………………………………………….. Gray
Shelf Life Resin & Hardener (in original unopened containers) …………………………………………………….. 2 years

TYPICAL PHYSICAL PROPERTIES (6 Layer, 10 Ounce Glass Fabric Laminate):
Ultimate Tensile Strength ……………………………………………………………………………………………………… 27,285psi (188MPa)
Ultimate Flexural Strength …………………………………………………………………………………………………….. 39,035psi (269MPa)
Flexural Modulus ………………………………………………………………………………………………………………….. 1,300,000psi (8,963MPa)
Cast Bar:
Ultimate Compressive Strength ……………………………………………………………………………………………… 14,930psi (103MPa)
Izod Impact Strength (notched) ……………………………………………………………………………………………… 5.29 in-lbf/in
Hardness …………………………………………………………………………………………………………………………….. 88 Shore D
Shrinkage ……………………………………………………………………………………………………………………………. 0.00132 in/in
Coefficient of Thermal Expansion (TMA) (ppm/ F ( C)) ……………………………………………………………. 24 (43)
Tensile Elongation ……………………………………………………………………………………………………………….. 2%
Glass Transition Temperature (Tg by DMA) ……………………………………………………………………………. 238 F (115 C)
Tested @ 300 F (149 C) (ASTM D-790):
Ultimate Flexural Strength …………………………………………………………………………………………………….. 8,491psi (59MPa)
Flexural Modulus ………………………………………………………………………………………………………………….. 820,000psi (5,654MPa)

EL-337
EPOXY LAMINATING
SYSTEM
HIGH TEMPERATURE, GRAY
FILLED

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EL-337
Product Technical Bulletin Cont.

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PRELIMINARY CURE SCHEDULE
On model: Cure for 24 hours @ 77 F (25 C)
+ 2 hours @ 150 F (66 C)

You may attach support structure and demold tool after this schedule is completed.

POST CURE SCHEDULE
After completing the Preliminary Cure Schedule, complete the following:

2 hours @ 200 F (93 C)
2 hours @ 250 F (121 C)
3 hours @ 300 F (149 C)

HEATING AND COOLING RATES DURING POST CURE

Always allow tools made with ADTECH high temp systems to gel at room temperature before subjecting them to post cure
(24 hours is usually sufficient). This will prevent excessive exotherm and shrinkage from occurring.
When oven curing laminated molds, always place the mold in a room temperature oven. Increase oven temperature at a rate
of no more than 50 F (30 C) per hour. When heat cure is completed, turn off oven and allow molds to remain in the oven.
Never remove mold from oven until mold temperature has been lowered to less than100 F (38 C).

EL-337 Tech/Revised 1/6/15
Supersedes 5/19/14

The information contained in this technical data sheet results from research and tests conducted in our laboratories under precise conditions. Seller
cannot anticipate all conditions under which seller s products, or the products of other manufacturers in combination with seller s products, may be used.
It is the responsibility of the user to determine the suitability of the Axson Technologies products, under their own conditions, before commencing with
the proposed application. In no event shall Axson Technologies, Inc. be liable for any direct, indirect, punitive, incidental, special, and/or consequential
damages, to property or life, whatsoever arising out of or connected with the use or misuse of our products.

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EL-337
Product Technical Bulletin Cont.

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