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50 CrMo 4

Germany SEW 50CrMo4 Steels for larger forgings; quality regulations 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 SEW 550 Germany Steels for larger forgings; quality regulations

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

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.6000 -
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)
669 (≥) 552 (≥) 32 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

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
31 - -     0.41 -  
453 162 - 31.3 433   -  
948 - 42 42.2   131 114

Heat Treatment of steel grade 50 CrMo 4

Heat treated : 1963°C - 1269°C

Technological Curves of steel grade 50 CrMo 4

Cross Reference Table (Equivalent Grade) of 50 CrMo 4

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