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50 CrMo 4

EU EN 50CrMo4 淬火和回火钢 - 第1部分:一般交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 50CrMo4 / 50 CrMo 4
Category Grade Standard Region/Area Standard Content
Metals 50 CrMo 4 EN 10083-1 EU 淬火和回火钢 - 第1部分:一般交货技术条件

Chemical composition(mass fraction)(wt.%) of the 50 CrMo 4

Element Min Max Similar
Mo 0.1500 0.3000 -
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.5000 0.8000 -
Si - 0.4000 -
C 0.4600 0.5400 -
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 0.4600 0.5400 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.5000 0.8000 -
Cr 0.9000 1.2000 -
C 0.4600 0.5400 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.5000 0.8000 -
Cr 0.9000 1.2000 -
C 0.4600 0.5400 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.5000 0.8000 -
Cr 0.9000 1.2000 -
C 0.4600 0.5400 -

Mechanical Properties of steel grade 50 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)
646 (≥) 343 (≥) 42 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade 50 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
14 - -     0.32 -  
252 444 - 24.3 214   -  
369 - 12 21.2   332 214

Heat Treatment of steel grade 50 CrMo 4

Heat treated : 1883°C - 1688°C

Technological Curves of steel grade 50 CrMo 4

Cross Reference Table (Equivalent Grade) of 50 CrMo 4

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