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21 NiCrMo 2

Germany DIN 21NiCrMo2 Bright steel made from case hardening steel; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 21NiCrMo2 / 21 NiCrMo 2
Category Grade Standard Region/Area Standard Content
Metals 21 NiCrMo 2 DIN 1652-3 Germany Bright steel made from case hardening steel; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 21 NiCrMo 2

Element Min Max Similar

Mechanical Properties of steel grade 21 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)
815 (≥) 383 (≥) 11 33 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade 21 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
24 - -     0.21 -  
348 862 - 13.3 112   -  
218 - 11 42.2   323 332

Heat Treatment of steel grade 21 NiCrMo 2

Heat treated : 1144°C - 1892°C

Technological Curves of steel grade 21 NiCrMo 2

Cross Reference Table (Equivalent Grade) of 21 NiCrMo 2

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