Material Properties Tantalum admin May 20, 2016 Material Properties for Tantalum Physical specifications of materials. Materials Tantalum Description Density g/cc 16.6 lb/in^3 0.6 Hardness Brinell unless specified Tensile Strength ultimate Mpa 689 Ksi 99.905 Yield Strength MPa Ksi Modulus of Elasticity Gpa 186 10^6 Psi 26.956521696 Poisson’s Ratio 0.35 %Elongation at break %Reduction of area Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 59.4 Btu/ft-h-F 34.3352601108 Specific Heat Cpacity J/g-K 0.138 Btu/lb-F 0.03312 Coefficient of thermal expansion 1E-6/K 6.5 1E-6/F 3.6165413505 Electrical Resistivity Ohm-cm 0.0000124