Material Properties AISI 1040 Steel Hot Rolled May 20, 2016 admin Material Properties for AISI 1040 Steel Hot Rolled Physical specifications of materials. Materials AISI 1040 Steel Description Hot Rolled Density g/cc 7.845 lb/in^3 0.283 Hardness Brinell unless specified 149 Tensile Strength ultimate Mpa 525 Ksi 76.125 Yield Strength MPa 290 Ksi 42.05 Modulus of Elasticity Gpa 200 10^6 Psi 28.9855072 Poisson’s Ratio 0.29 %Elongation at break 18 %Reduction of area 40 Izod Impact J 49 Ft-lb 36.1522 Fracture Toughness Mpa(m)^0.5 Ksi(in)^0.5 Thermal conductivity W/m-K 51.9 Btu/ft-h-F 29.9999999958 Specific Heat Cpacity J/g-K 0.486 Btu/lb-F 0.11664 Coefficient of thermal expansion 1E-6/K 11.3 1E-6/F 6.2872180401 Electrical Resistivity Ohm-cm 0.0000171 Auto Amazon Links: No products found.Auto Amazon Links: No products found.