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Epocast_1670-A/B Self Extinguishing Syntactic

Epocast 1670-A/B is an epoxy syntactic compound developed as an edge sealant for honeycomb structures. Special features of high strength, low density and ease of handling have been incorporated into this system along with improved flame resistance to meet FAR 25.853B.

SPECIFICATIONS
FAR 25.853B Federal Express SRZ-25-005 Grumman GR 110 PF 1 Rev B

TECHNICAL DATA
Property ____________________________1670-A ___1670-B 1670-A/B _Test Method Color _______________________________Off-White Amber _Off-White Visual Density, g/cc. ______________________0.61 _____0.96 __0.70 _____ASTM-1622 Viscosity, centipoise @ 77°F _______Semi-Paste 5,000 _Paste ____ASTM-D-2196 Gel time, 100 gms at 77°F, minutes __-- _______-- ____60-90 ____ASTM-D-2471 Shelf life at 77°F, unopened, months 12 _______12 ____-- _______-- MIX RATIO To 100 parts by weight of Epocast 1670-A, add 20 parts by weight of Epocast 1670-B. Mix both components thoroughly for several minutes to assure complete blending. If Epocast 1670-A separates during storage, stir thoroughly before adding Epocast 1670-B. CURE SCHEDULE 48 hours at 77°F or gel at room temperature plus five hours at 125°F. TYPICAL CURED PROPERTIES (Not for specification purposes) Test _____________________________________________Result __Test Method Compressive strength, Ksi ________________________6.5 _____ASTM-D-695 Compressive modulus, Ksi _________________________250 _____ASTM-D-695 Tensile lap shear, 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 _________________0.1 _Mil-M-5606 hydraulic fluid ______________________1.0 _Skydrol 500A ____________________________________1.5 _Distilled water _________________________________2.5 Flammability, 60 second ignition, _self-extinguishing, seconds _____________________<5.0 ____FAR 25.853B _burn length, inches _____________________________<4.0 Heat Release (neat material only) ________________73/45 ___O.S.U. Smoke Density (neat material only) D_s ____________147 _____N.B.S.


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