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Japan JIS SCr420 机械结构用低合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SCr420 / SCr 420
Category Grade Standard Region/Area Standard Content
Metals SCr 420 JIS G4053 Japan 机械结构用低合金钢

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

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Mn 0.6000 0.8500 -
Cr 0.9000 1.2000 -
C 0.1800 0.2300 -

Mechanical Properties of steel grade SCr 420

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)
381 (≥) 141 (≥) 32 24 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade SCr 420

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 - -     0.13 -  
897 365 - 24.3 133   -  
348 - 24 11.2   442 323

Heat Treatment of steel grade SCr 420

Heat treated : 1629°C - 1429°C

Technological Curves of steel grade SCr 420

Cross Reference Table (Equivalent Grade) of SCr 420

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