Material Properties Fused Silica admin May 20, 2016January 17, 2017 Material Properties for Fused Silica Physical specifications of materials. Materials Fused Silica Description Density g/cc 1.855 lb/in^3 0.067 Hardness Brinell unless specified Tensile Strength ultimate Mpa 104 Ksi 15.08 Yield Strength MPa Ksi Modulus of Elasticity Gpa 10^6 Psi Poisson’s Ratio %Elongation at break %Reduction of area Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 0.8 Ksi(in)^0.5 0.72 Thermal conductivity W/m-K 0.8 Btu/ft-h-F 0.4624277456 Specific Heat Cpacity J/g-K Btu/lb-F Coefficient of thermal expansion 1E-6/K 0.6 1E-6/F 0.3338345862 Electrical Resistivity Ohm-cm 200000000000000