Material Properties Invar Alloy 36 Alloy (Cold Drawn) admin May 20, 2016 Material Properties for Invar Alloy 36 Alloy (Cold Drawn) Physical specifications of materials. Materials Invar Description Alloy 36 Alloy (Cold Drawn) Density g/cc 8.05 lb/in^3 0.291 Hardness Brinell unless specified 184 Tensile Strength ultimate Mpa 621 Ksi 90.045 Yield Strength MPa 483 Ksi 70.035 Modulus of Elasticity Gpa 148 10^6 Psi 21.449275328 Poisson’s Ratio 0.23 %Elongation at break 20 %Reduction of area 60 Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 10.15 Btu/ft-h-F 5.8670520223 Specific Heat Cpacity J/g-K 0.515 Btu/lb-F 0.1236 Coefficient of thermal expansion 1E-6/K 1.3 1E-6/F 0.7233082701 Electrical Resistivity Ohm-cm 0.000082