Material Properties Boron Nitride admin May 20, 2016January 17, 2017 Material Properties for Boron Nitride Physical specifications of materials. Materials Boron Nitride Description Density g/cc 3.48 lb/in^3 0.125 Hardness Brinell unless specified 279 Tensile Strength ultimate Mpa 47 Ksi 6.815 Yield Strength MPa Ksi Modulus of Elasticity Gpa 69 10^6 Psi 9.999999984 Poisson’s Ratio %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 Btu/ft-h-F Specific Heat Cpacity J/g-K Btu/lb-F Coefficient of thermal expansion 1E-6/K 1E-6/F Electrical Resistivity Ohm-cm 10000000000000