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31 CrMoV 9

Germany DIN 31CrMoV9 氮化钢 - 交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 31CrMoV9 / 31 CrMoV 9
Category Grade Standard Region/Area Standard Content
Metals 31 CrMoV 9 DIN EN 10085 Germany 氮化钢 - 交货技术条件

Chemical composition(mass fraction)(wt.%) of the 31 CrMoV 9

Element Min Max Similar
V 0.1000 0.2000 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.2500 -
Mn 0.4000 0.7000 -
Cr 2.3000 2.7000 -
C 0.2700 0.3400 -

Mechanical Properties of steel grade 31 CrMoV 9

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)
574 (≥) 827 (≥) 21 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade 31 CrMoV 9

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
33 - -     0.42 -  
985 365 - 24.3 434   -  
392 - 22 12.2   422 214

Heat Treatment of steel grade 31 CrMoV 9

Heat treated : 1762°C - 1714°C

Technological Curves of steel grade 31 CrMoV 9

Cross Reference Table (Equivalent Grade) of 31 CrMoV 9

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