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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)
373 (≥) 954 (≥) 21 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

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
33 - -     0.44 -  
337 681 - 24.3 324   -  
124 - 21 12.2   343 313

Heat Treatment of steel grade 21 NiCrMo 2

Heat treated : 1785°C - 1736°C

Technological Curves of steel grade 21 NiCrMo 2

Cross Reference Table (Equivalent Grade) of 21 NiCrMo 2

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