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20MnCrMo4-2

Japan JIS 20MnCrMo4-2 高碳鉻軸承鋼鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20MnCrMo4-2 / 20MnCrMo4-2
Category Grade Standard Region/Area Standard Content
Metals 20MnCrMo4-2 JIS G4805 Japan 高碳鉻軸承鋼鋼料

Chemical composition(mass fraction)(wt.%) of the 20MnCrMo4-2

Element Min Max Similar

Mechanical Properties of steel grade 20MnCrMo4-2

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)
151 (≥) 832 (≥) 31 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 20MnCrMo4-2

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
12 - -     0.22 -  
577 143 - 23.3 332   -  
215 - 32 11.2   423 122

Heat Treatment of steel grade 20MnCrMo4-2

Heat treated : 1665°C - 1546°C

Technological Curves of steel grade 20MnCrMo4-2

Cross Reference Table (Equivalent Grade) of 20MnCrMo4-2

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