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Epocast_1638-A/B Quick Set Syntactic
Epocast 1638-A/B is a low density epoxy syntactic compound designed for potting fasteners in honeycomb structures. It is easily extruded through 1/8? nozzle orifice, but is non flow after application. Epocast 1638-A/B sets quickly at room temperature and is antimony trioxide free.

SPECIFICATIONS
FAR 25.853 a

TECHNICAL DATA
Property _________________________1638-A ____1638-B _1638-A/B __Test Method Color ____________________________Off White_ Amber __Off White _Visual Density, g/cc ____________________0.65 ______1.00 ___0.70 ______ASTM-D-1622 Viscosity, cps @ 77°F _________v__Paste _____400 ____Paste _____ASTM-D-2196 Gel time, 50 gms at 77°F, minutes -- ________-- _____12-25 _____ASTM-D-2471 Shelf life at 77°F, unopened, months 6 ______6 ______-- ________-- Extrudability, g/min @ RT 1/8? nozzle -- ____-- _____88 ________-- MIX RATIO To 100 parts by weight of Epocast 1638-A, add 13 parts by weight of Epocast 1638-B. Mix both components thoroughly for 2-3 minutes to ensure complete blending. CURE SCHEDULE: 24 hours at room temperature. The cure may be accelerated with heat 5 hours at 120°F after room temperature gelation. TYPICAL CURED PROPERTIES (Not for specification purposes) Test ________________________________________________Result ____Test Method Compressive strength/modulus @ 77°F, Ksi _______________________ASTM-D-695 _After Cure 8 hours @ 75°F __________________________7.27/300 __-- __12 hours @ 75°F ___________________________________7.60/322 __-- __24 hours @ 75°F ___________________________________7.60/360 __-- 1 hour @ 118°F (50°C) _______________________________7.95/364 __-- 3 hours @ 118°F (50°C) ______________________________8.10/386 __-- Tensile lap shear, chromic acid etched AL/AL, psi ___1.000 _____ASTM-D-1002 Weight change, 24 hours immersion at 77°F, % ___________________ASTM-D-543 _Mil-S-3136, Type III test fluid ____________________0.2 _______-- _Mil-M-5606 hydraulic fluid _________________________0.4 _______-- _Skydrol 500A _______________________________________0.6 _______-- _Distilled water ____________________________________1.0 _______-- Flammability, 60 second ignition, vertical _____________________FAR-25.853a _Self-extinguish time, seconds ______________________1 _________-- _Burn length, inches ________________________________3 _________-- _Drip self-extinguishing time, seconds ______________no drip ___--


	8750 Exchange Dr. Unit #5 Orlando, Florida 32809
	8750 Exchange Dr. Unit #5 Orlando, Florida 32809	407-426-9175