Krefine is a conductive polymer composite consisting of conductive fillers (i.e., carbon black, carbon fiber, graphite, metal fiber) suspended in an insulating polymer.

MechanicalASTM Test MethodKrefine EKH-SS07Krefine EKH-SS09Krefine EKH-SS11Units
Strength to Weight Ratio----ksi
Specific Gravity @73 FD7921.331.311.31-
Tensile Strength @73 F, (ult)/(yld)D638140135110psi
Tensile Modulus of Elasticity @73 FD638---psi
Tensile Elongation at Break @73 FD6382.53.03.5%
Flexural Strength @73 FD790200190170psi
Flexural Modulus of Elasticity @73 FD79010,0008,0006,000psi
Shear Strength @73 FD732---psi
Comprehensive Strength, (% Deformation) @73 FD695180172155psi
Comprehensive Modulus of Elasticity @73 FD6959,0007,5005,820psi
Hardness, Rockwell, Scale as noted @73 FD785M-125M-125M-125-
Hardness, Durometer, Shore D @73 FD2240----
Izod Impact, (Notched) @73 FD256 Type A303030ft-lb/in of notch
Coefficient of Friction, (Dry vs Steel) Dynamic-----
Limiting PV, (with 4 to 1 factor of safety applied)----psi-ft/min
ThermalASTM Test MethodKrefine EKH-SS07Krefine EKH-SS09Krefine EKH-SS11Units
Coefficient of Linear Thermal Expansion @73 FE-831 (TMA)1.51.51.5in/in/F
Heat Deflection Temperature @264 psiD648305305280F
Tg-Glass transition termperature, (Amorphous)D3418143143143F
Melting Point, (VS=Vicat Softening Temp.)D3418---F
Continuous Service Temperature in Air, (Max.)-260260260F
Thermal Conductivity----BTU-in/hr-ft2-F
ElectricASTM Test MethodKrefine EKH-SS07Krefine EKH-SS09Krefine EKH-SS11Units
Dielectric Strength, Short TermD149-25Volts/mil
Volume ResistivityD25710 E6-710 E7-910 E9-11ohm-cm
Dielectric Constant @10E6 HzD1507.96.65.3-
Dissipation Factor @10E6 HzD1500.220.211.16-
Flammability @3.1 mm unless notedUL94V-0V-0V-0-
H2OASTM Test MethodKrefine EKH-SS07Krefine EKH-SS09Krefine EKH-SS11Units
Water Absorption, Immersion, 24 hoursD570(7)0.40.40.4% by weight
Water Absorption, SaturationD570(7)0.60.60.6% by weight