Material Properties Fused quartz (silica) admin May 20, 2016January 17, 2017 Material Properties for Fused quartz (silica) Physical specifications of materials. Materials Fused quartz (silica) Description Density g/cc 2.2 lb/in^3 0.0795 Hardness Brinell unless specified 722 Tensile Strength ultimate Mpa 500 Ksi 72.5 Yield Strength MPa Ksi Modulus of Elasticity Gpa 74 10^6 Psi 10.724637664 Poisson’s Ratio 0.17 %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 1.7 Btu/ft-h-F 0.9826589594 Specific Heat Cpacity J/g-K 0.7 Btu/lb-F 0.168 Coefficient of thermal expansion 1E-6/K 0.4 1E-6/F 0.2225563908 Electrical Resistivity Ohm-cm 100000000000000