Material Properties AISI 1340 Steel Annealed admin May 20, 2016 Material Properties for AISI 1340 Steel Annealed Physical specifications of materials. Materials AISI 1340 Steel Description Annealed Density g/cc 7.87 lb/in^3 0.284 Hardness Brinell unless specified 207 Tensile Strength ultimate Mpa 703 Ksi 101.935 Yield Strength MPa 434 Ksi 62.93 Modulus of Elasticity Gpa 200 10^6 Psi 28.9855072 Poisson’s Ratio 0.29 %Elongation at break 25.5 %Reduction of area 57.3 Izod Impact J 46 Ft-lb 33.9388 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