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SNCM 420 H

Japan JIS SNCM420H 指定的淬透性结构钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNCM420H / SNCM 420 H
Category Grade Standard Region/Area Standard Content
Metals SNCM 420 H JIS G4052 Japan 指定的淬透性结构钢带

Chemical composition(mass fraction)(wt.%) of the SNCM 420 H

Element Min Max Similar

Mechanical Properties of steel grade SNCM 420 H

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)
176 (≥) 511 (≥) 43 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade SNCM 420 H

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
14 - -     0.34 -  
344 365 - 11.3 144   -  
994 - 12 11.2   411 334

Heat Treatment of steel grade SNCM 420 H

Heat treated : 1712°C - 1446°C

Technological Curves of steel grade SNCM 420 H

Cross Reference Table (Equivalent Grade) of SNCM 420 H

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