AISI 4340 Steel Annealed

Material Properties for AISI 4340 Steel Annealed

Physical specifications of materials.

Materials AISI 4340 Steel
  Description Annealed
Density g/cc 7.85
  lb/in^3 0.284
Hardness Brinell unless specified 217
Tensile Strength ultimate Mpa 745
  Ksi 108.025
Yield Strength MPa 470
  Ksi 68.15
Modulus of Elasticity Gpa 205
  10^6 Psi 29.71014488
Poisson’s Ratio   0.29
%Elongation at break 22
%Reduction of area 50
Izod Impact J 51
  Ft-lb 37.6278
Fracture Toughness Mpa(m)^0.5
  Ksi(in)^0.5
Thermal conductivity W/m-K 44.5
  Btu/ft-h-F 25.722543349
Specific Heat Cpacity J/g-K 0.475
  Btu/lb-F 0.114
Coefficient of thermal expansion 1E-6/K 12.3
  1E-6/F 6.8436090171
Electrical Resistivity Ohm-cm 0.0000248