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21 CrNMoW 12

Hungary MSZ 21CrNMoW12 Hidrogen-pressure resisting steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 21CrNMoW12 / 21 CrNMoW 12
Category Grade Standard Region/Area Standard Content
Metals 21 CrNMoW 12 MSZ 2295 Hungary Hidrogen-pressure resisting steel

Chemical composition(mass fraction)(wt.%) of the 21 CrNMoW 12

Element Min Max Similar

Mechanical Properties of steel grade 21 CrNMoW 12

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)
989 (≥) 543 (≥) 32 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade 21 CrNMoW 12

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
32 - -     0.12 -  
547 736 - 33.3 143   -  
729 - 43 42.2   233 433

Heat Treatment of steel grade 21 CrNMoW 12

Heat treated : 1894°C - 1945°C

Technological Curves of steel grade 21 CrNMoW 12

Cross Reference Table (Equivalent Grade) of 21 CrNMoW 12

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