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22 NiMoCr 4 7

Germany SEW 22NiMoCr47 Steels for larger forgings; quality regulations and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 22NiMoCr47 / 22 NiMoCr 4 7
Category Grade Standard Region/Area Standard Content
Metals 22 NiMoCr 4 7 SEW 550 Germany Steels for larger forgings; quality regulations

Chemical composition(mass fraction)(wt.%) of the 22 NiMoCr 4 7

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni 0.6000 1.2000 -
Mo 0.5000 0.8000 -
Mn 0.5000 1.0000 -
Cr 0.3000 0.5000 -
C 0.1700 0.2700 -

Mechanical Properties of steel grade 22 NiMoCr 4 7

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)
997 (≥) 923 (≥) 32 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade 22 NiMoCr 4 7

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 - -     0.41 -  
641 784 - 13.3 233   -  
138 - 13 13.2   323 144

Heat Treatment of steel grade 22 NiMoCr 4 7

Heat treated : 1389°C - 1937°C

Technological Curves of steel grade 22 NiMoCr 4 7

Cross Reference Table (Equivalent Grade) of 22 NiMoCr 4 7

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