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20 NiCrMo 2

Germany DIN 20NiCrMo2 Steels for welded round link chains; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20NiCrMo2 / 20 NiCrMo 2
Category Grade Standard Region/Area Standard Content
Metals 20 NiCrMo 2 DIN 17115 Germany Steels for welded round link chains; technical delivery conditions

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

Element Min Max Similar
Si - 0.2500 -
S - 0.0200 -
P+S - 0.0350 -
P - 0.0200 -
Ni 0.4000 0.7000 -
N - 0.1200 -
Mo 0.1500 0.2500 -
Mn 0.6000 0.9000 -
Cu - 0.2500 -
Cr 0.3500 0.6500 -
C 0.1700 0.2300 -
Al 0.0200 0.0500 -
Si - 0.2500 -
S - 0.0200 -
P - 0.0200 -
Ni 0.4000 0.7000 -
N - 0.1200 -
Mo 0.1500 0.2500 -
Mn 0.6000 0.9000 -
Cu - 0.2500 -
Cr 0.3500 0.6500 -

Mechanical Properties of steel grade 20 NiCrMo 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)
262 (≥) 876 (≥) 13 33 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade 20 NiCrMo 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
21 - -     0.23 -  
212 934 - 31.3 142   -  
634 - 21 24.2   334 113

Heat Treatment of steel grade 20 NiCrMo 2

Heat treated : 1448°C - 1165°C

Technological Curves of steel grade 20 NiCrMo 2

Cross Reference Table (Equivalent Grade) of 20 NiCrMo 2

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