Material Properties Kovar Alloy admin May 20, 2016 Material Properties for Kovar Alloy Physical specifications of materials. Materials Kovar Alloy Description Density g/cc 8.36 lb/in^3 0.302 Hardness Brinell unless specified 120 Tensile Strength ultimate Mpa 517 Ksi 74.965 Yield Strength MPa 345 Ksi 50.025 Modulus of Elasticity Gpa 138 10^6 Psi 19.999999968 Poisson’s Ratio 0.317 %Elongation at break 30 %Reduction of area Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 17.3 Btu/ft-h-F 9.9999999986 Specific Heat Cpacity J/g-K 0.439 Btu/lb-F 0.10536 Coefficient of thermal expansion 1E-6/K 5.86 1E-6/F 3.26045112522 Electrical Resistivity Ohm-cm 0.000049