Material Properties AISI 1340 Steel Oil Quenched admin May 20, 2016 Material Properties for AISI 1340 Steel Oil Quenched Physical specifications of materials. Materials AISI 1340 Steel Description Oil Quenched Density g/cc 7.87 lb/in^3 0.284 Hardness Brinell unless specified 285 Tensile Strength ultimate Mpa 951 Ksi 137.895 Yield Strength MPa 834 Ksi 120.93 Modulus of Elasticity Gpa 200 10^6 Psi 28.9855072 Poisson’s Ratio 0.29 %Elongation at break 19.2 %Reduction of area 57.4 Izod Impact J Ft-lb 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 0.472 Btu/lb-F 0.11328 Coefficient of thermal expansion 1E-6/K 11.5 1E-6/F 6.3984962355 Electrical Resistivity Ohm-cm 0.0000174