AISI 4140 Steel Normalized

Material Properties for AISI 4140 Steel Normalized

Physical specifications of materials.

Materials AISI 4140 Steel
  Description Normalized
Density g/cc 7.85
  lb/in^3 0.284
Hardness Brinell unless specified 302
Tensile Strength ultimate Mpa 1020
  Ksi 147.9
Yield Strength MPa 655
  Ksi 94.975
Modulus of Elasticity Gpa 205
  10^6 Psi 29.71014488
Poisson’s Ratio   0.29
%Elongation at break 17.7
%Reduction of area 46.8
Izod Impact J 87
  Ft-lb 64.1886
Fracture Toughness Mpa(m)^0.5 60
  Ksi(in)^0.5 54
Thermal conductivity W/m-K 42.6
  Btu/ft-h-F 24.6242774532
Specific Heat Cpacity J/g-K 0.473
  Btu/lb-F 0.11352
Coefficient of thermal expansion 1E-6/K 12.2
  1E-6/F 6.7879699194
Electrical Resistivity Ohm-cm 0.000022