Material Properties Magnesium Alloy AZ31B Extruded admin May 20, 2016 Material Properties for Magnesium Alloy AZ31B Extruded Physical specifications of materials. Materials Magnesium Alloy AZ31B Description Extruded Density g/cc 1.77 lb/in^3 0.0639 Hardness Brinell unless specified 49 Tensile Strength ultimate Mpa 260 Ksi 37.7 Yield Strength MPa 200 Ksi 29 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 28 Ksi(in)^0.5 25.2 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