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Epocast_1671-A/B Quick Set Syntactic
Epocast 1671-A/B is a semi-paste epoxy compound designed for potting fasteners in honeycomb structures. It is easily extruded through 1/8? nozzle orifice, but is self-leveling after application. Epocast 1671-A/B sets quickly at room temperature and develops excellent flame resistance meeting the requirements of FAR 25.853B in most composite assemblies.

SPECIFICATIONS
FAR 25.853B Federal Express SRZ-25-005 Grumman GR 110 PF 2 Rev B

TECHNICAL DATA
Property _________________________1671-A ____1671-B _1671-A/B __Test Method Color ____________________________Off-white_ Amber __Off-white _Visual Density, g/cc. ___________________0.61 ______0.97 ___0.70 ______ASTM-1622 Viscosity, centipoise @ 77°F _____Semi-paste 1,500 __Semi-paste ASTM-D-2196 Gel time, 50 gms at 77°F, minutes -- ________-- _____12-20 _____ASTM-D-2471 Shelf life at 77°F, unopened, months 12 _____12 _____-- ________-- MIX RATIO To 100 parts by weight of Epocast 1671-A, add 13 parts by weight of Epocast 1671-B. Mix both components thoroughly for several minutes to assure complete blending. CURE SCHEDULE 24 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 _____________________48 MPa ____7 ksi _____ASTM-D-695 Compressive modulus ______________________1,725 MPa _250 ksi ___ASTM-D-695 Tensile lap shear, chromic acid _etched aluminum _________________________7MPa ______1,000 psi _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 ____________________________________+1.0 Distilled water _________________________________+1.5 Flammability, 60 second ignition, _self-extinguishing, seconds ____________________<5.0 __________FAR 25.853B burn length, inches _____________________________<4.0 Heat Release (neat material only) _______________51/13 _________O.S.U. Smoke Density (neat material only) D8 ___________104 ___________N.B.S.


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