AISI 4140 Steel Annealed

Material Properties for AISI 4140 Steel Annealed

Physical specifications of materials.

Materials AISI 4140 Steel
  Description Annealed
Density g/cc 7.85
  lb/in^3 0.284
Hardness Brinell unless specified 197
Tensile Strength ultimate Mpa 655
  Ksi 94.975
Yield Strength MPa 415
  Ksi 60.175
Modulus of Elasticity Gpa 205
  10^6 Psi 29.71014488
Poisson’s Ratio   0.29
%Elongation at break 25.7
%Reduction of area 56.9
Izod Impact J 62
  Ft-lb 45.7436
Fracture Toughness Mpa(m)^0.5
  Ksi(in)^0.5
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