Material Properties Magnesium Alloy AZ31B Hard Rolled admin May 20, 2016 Material Properties for Magnesium Alloy AZ31B Hard Rolled Physical specifications of materials. Materials Magnesium Alloy AZ31B Description Hard Rolled Density g/cc 1.77 lb/in^3 0.0639 Hardness Brinell unless specified 73 Tensile Strength ultimate Mpa 290 Ksi 42.05 Yield Strength MPa 220 Ksi 31.9 Modulus of Elasticity Gpa 45 10^6 Psi 6.52173912 Poisson’s Ratio 0.35 %Elongation at break 15 %Reduction of area Izod Impact J Ft-lb Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 96 Btu/ft-h-F 55.491329472 Specific Heat Cpacity J/g-K 1 Btu/lb-F 0.24 Coefficient of thermal expansion 1E-6/K 26 1E-6/F 14.466165402 Electrical Resistivity Ohm-cm 0.0000092