Material Properties Silicon Nitride admin May 20, 2016January 17, 2017 Material Properties for Silicon Nitride Physical specifications of materials. Materials Silicon Nitride Description Density g/cc 3.2 lb/in^3 0.116 Hardness Brinell unless specified 1600(Vickers) Tensile Strength ultimate Mpa 800 Ksi 116 Yield Strength MPa Ksi Modulus of Elasticity Gpa 290 10^6 Psi 42.02898544 Poisson’s Ratio 0.25 %Elongation at break %Reduction of area Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 4.5 Ksi(in)^0.5 4.05 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 2.8 1E-6/F 1.5578947356 Electrical Resistivity Ohm-cm 100000000000