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China 舞钢Q/WTB 42CrMoA 全纤维镦锻曲轴坯料技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 42CrMoA / 42CrMoA
Category Grade Standard Region/Area Standard Content
Metals 42CrMoA WJX 023 China 全纤维镦锻曲轴坯料技术条件

Chemical composition(mass fraction)(wt.%) of the 42CrMoA

Element Min Max Similar
Cu - 0.2000 -
P - 0.0150 -
S - 0.0150 -
Ni 0.1500 0.3000 -
Nb 0.0300 0.0500 -
Cr 0.9000 1.1500 -
Mo 0.1500 0.2500 -
Mn 0.5000 0.8000 -
Si 0.2000 0.3700 -
C 0.4000 0.4500 -

Mechanical Properties of steel grade 42CrMoA

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)
578 (≥) 969 (≥) 31 14 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade 42CrMoA

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
31 - -     0.23 -  
269 552 - 43.3 424   -  
826 - 44 42.2   344 112

Heat Treatment of steel grade 42CrMoA

Heat treated : 1745°C - 1144°C

Technological Curves of steel grade 42CrMoA

Cross Reference Table (Equivalent Grade) of 42CrMoA

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