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Japan JIS SNCM21 镍铬钼钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNCM21 / SNCM 21
Category Grade Standard Region/Area Standard Content
Metals SNCM 21 JIS G4103 Japan 镍铬钼钢

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

Element Min Max Similar

Mechanical Properties of steel grade SNCM 21

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)
149 (≥) 662 (≥) 33 33 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade SNCM 21

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 - -     0.13 -  
136 916 - 43.3 411   -  
122 - 14 44.2   212 422

Heat Treatment of steel grade SNCM 21

Heat treated : 1627°C - 1166°C

Technological Curves of steel grade SNCM 21

Cross Reference Table (Equivalent Grade) of SNCM 21

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