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42 CrMo 4

Germany DIN 42CrMo4 热处理冷轧窄钢带- 交货技术条件 - 第3部分:淬火和回火钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 42CrMo4 / 42 CrMo 4
Category Grade Standard Region/Area Standard Content
Metals 42 CrMo 4 DIN EN 10132-3 Germany 热处理冷轧窄钢带- 交货技术条件 - 第3部分:淬火和回火钢

Chemical composition(mass fraction)(wt.%) of the 42 CrMo 4

Element Min Max Similar
Mo 0.1500 0.3000 -
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.6000 0.9000 -
Si - 0.4000 -
C 0.3800 0.4500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -
Si - 0.4000 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4500 -

Mechanical Properties of steel grade 42 CrMo 4

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)
176 (≥) 124 (≥) 21 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade 42 CrMo 4

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 - -     0.23 -  
958 915 - 33.3 133   -  
242 - 23 12.2   443 221

Heat Treatment of steel grade 42 CrMo 4

Heat treated : 1675°C - 1229°C

Technological Curves of steel grade 42 CrMo 4

Cross Reference Table (Equivalent Grade) of 42 CrMo 4

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