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31CrNiMo8E

International ISO 31CrNiMo8E 冷镦和冷挤压用钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 31CrNiMo8E / 31CrNiMo8E
Category Grade Standard Region/Area Standard Content
Metals 31CrNiMo8E ISO 4954 International 冷镦和冷挤压用钢

Chemical composition(mass fraction)(wt.%) of the 31CrNiMo8E

Element Min Max Similar
Mo 0.3000 0.5000 -
Ni 1.8000 2.2000 -
Cr 1.8000 2.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.3000 0.6000 -
Si - 0.4000 -
C 0.2700 0.3400 -

Mechanical Properties of steel grade 31CrNiMo8E

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
687 (≥) 713 (≥) 31 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade 31CrNiMo8E

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
14 - -     0.23 -  
155 725 - 44.3 413   -  
566 - 31 22.2   133 321

Heat Treatment of steel grade 31CrNiMo8E

Heat treated : 1958°C - 1746°C

Technological Curves of steel grade 31CrNiMo8E

Cross Reference Table (Equivalent Grade) of 31CrNiMo8E

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