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Epocast_1656-A/B Low Density Syntactic
Epocast 1656-A/B is a low density, syntactic epoxy system with superior properties at elevated temperature following room temperature cure. It is useful as a core fill for metal skins, adding stiffness and strength to the fabricated parts. It is also suitable for core splicing and in strengthening radii and corners of reinforced plastic structures.

SPECIFICATIONS
Brunswick BMS 999360042 Rev D Grumman GM 4006 TY 1 CL B FM 1 AM 3 (4006.1.2.1) Pratt & Whitney CPW 505 Rev C Rockwell LBO 130-019 Rev C + ASL Rev G

TECHNICAL DATA
Property ____________________________1656-A __1656-B _1656-A/B _Test Method Color________________________________Lt. Tan_ Amber __Lt. Tan __Visual Density, gm/cc ______________________0.80 ____1.00 ___0.80 _____ASTM-1622 Viscosity, centipoise @ 77°F ________Paste ___500 ____Paste ____ASTM-D-2196 Gel time, 100 gms at 77°F, minutes __-- ______-- _____50-90 ____ASTM-D-2471 Shelf life at 77°F, unopened, months 6 _______6 ______-- _______-- MIX RATIO To 100 parts by weight of Epocast 1656-A, add 12 parts by weight of Epocast 1656-B. Mix both components thoroughly for several minutes to insure complete and uniform mixing. CURE SCHEDULE 7 days at 77°F or gel at 77°F followed by 2-3 hours at 150°F. TYPICAL CURED PROPERTIES (Not for specification purposes) Test _______________________________________Result____ Test Method Tensile lap shear, etched AL/AL, psi _______700 _______ASTM-D-1002 Compressive strength, Ksi (2% strain) _at -67°F __________________________________9.50 ______ASTM-D-695 _at 77°F ___________________________________8.00 ______-- _at 180°F __________________________________3.00 ______-- _at 350°F __________________________________0.55 ______-- Flatwise tensile strength @ 74°F, psi ______2000 ______ASTM-C-297 _@ 160°F ___________________________________1000 ______--


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