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40Cr3NiMo

China JB 40Cr3NiMo 大型高铬锻钢支承辊.技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40Cr3NiMo / 40Cr3NiMo
Category Grade Standard Region/Area Standard Content
Metals 40Cr3NiMo JB/T 11021 China 大型高铬锻钢支承辊.技术条件

Chemical composition(mass fraction)(wt.%) of the 40Cr3NiMo

Element Min Max Similar
C 0.3500 0.4500 -
Si 0.5000 0.8000 -
Mn 0.2500 0.4500 -
P - 0.0200 -
S - 0.0150 -
Cr 2.7000 3.3000 -
Ni 0.3000 0.5000 -
Mo 0.3500 0.5500 -

Mechanical Properties of steel grade 40Cr3NiMo

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)
829 (≥) 139 (≥) 41 44 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade 40Cr3NiMo

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
24 - -     0.44 -  
339 949 - 13.3 312   -  
363 - 21 23.2   133 323

Heat Treatment of steel grade 40Cr3NiMo

Heat treated : 1918°C - 1691°C

Technological Curves of steel grade 40Cr3NiMo

Cross Reference Table (Equivalent Grade) of 40Cr3NiMo

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