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20 NiCrMo 2-2

Germany DIN 20NiCrMo2-2 钢棒,棒材和线材冷镦和冷挤压 - 第3部分:交货技术条件:表面硬化钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20NiCrMo2-2 / 20 NiCrMo 2-2
Category Grade Standard Region/Area Standard Content
Metals 20 NiCrMo 2-2 DIN EN 10263-3 Germany 钢棒,棒材和线材冷镦和冷挤压 - 第3部分:交货技术条件:表面硬化钢

Chemical composition(mass fraction)(wt.%) of the 20 NiCrMo 2-2

Element Min Max Similar
Mo 0.1500 0.2500 -
Ni 0.4000 0.7000 -
Cr 0.3500 0.7000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.6500 0.9500 -
Si - 0.4000 -
C 0.1700 0.2300 -
Si - 0.3000 -
S - 0.0250 -
P - 0.0250 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.2500 -
Mn 0.6500 0.9500 -
Cu - 0.2500 -
Cr 0.3500 0.7000 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade 20 NiCrMo 2-2

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)
372 (≥) 555 (≥) 43 13 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade 20 NiCrMo 2-2

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 - -     0.44 -  
857 555 - 34.3 244   -  
959 - 13 13.2   441 412

Heat Treatment of steel grade 20 NiCrMo 2-2

Heat treated : 1472°C - 1119°C

Technological Curves of steel grade 20 NiCrMo 2-2

Cross Reference Table (Equivalent Grade) of 20 NiCrMo 2-2

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