Material Properties Invar Alloy 32-5 (Cold Drawn) admin May 20, 2016 Material Properties for Invar Alloy 32-5 (Cold Drawn) Physical specifications of materials. Materials Invar Description Alloy 32-5 (Cold Drawn) Density g/cc 8.14 lb/in^3 0.294 Hardness Brinell unless specified 135 Tensile Strength ultimate Mpa 483 Ksi 70.035 Yield Strength MPa 276 Ksi 40.02 Modulus of Elasticity Gpa 145 10^6 Psi 21.01449272 Poisson’s Ratio 0.23 %Elongation at break 40 %Reduction of area Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K Btu/ft-h-F Specific Heat Cpacity J/g-K Btu/lb-F Coefficient of thermal expansion 1E-6/K 0.194 1E-6/F 0.107939849538 Electrical Resistivity Ohm-cm 0.00008