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Japan JIS SNC21 镍铬钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNC21 / SNC 21
Category Grade Standard Region/Area Standard Content
Metals SNC 21 JIS G4102 Japan 镍铬钢

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

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni 2.0000 2.5000 -
Mn 0.3500 0.6500 -
Cr 0.2000 0.5000 -
C 0.1200 0.1800 -

Mechanical Properties of steel grade SNC 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)
383 (≥) 632 (≥) 42 43 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade SNC 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
42 - -     0.24 -  
935 557 - 23.3 313   -  
628 - 43 13.2   213 243

Heat Treatment of steel grade SNC 21

Heat treated : 1354°C - 1495°C

Technological Curves of steel grade SNC 21

Cross Reference Table (Equivalent Grade) of SNC 21

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