Material Properties Niobium admin May 20, 2016January 17, 2017 Material Properties for Niobium Physical specifications of materials. Materials Niobium Description Density g/cc 8.57 lb/in^3 0.31 Hardness Brinell unless specified Tensile Strength ultimate Mpa 195 Ksi 28.275 Yield Strength MPa 105 Ksi 15.225 Modulus of Elasticity Gpa 103 10^6 Psi 14.927536208 Poisson’s Ratio 0.38 %Elongation at break 30 %Reduction of area 80 Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 0.523 Btu/ft-h-F 0.302312138686 Specific Heat Cpacity J/g-K Btu/lb-F Coefficient of thermal expansion 1E-6/K 7.1 1E-6/F 3.9503759367 Electrical Resistivity Ohm-cm 0.000014