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SCM420RCH

Japan JIS SCM420RCH 低合金冷镦钢 - 第1部分:线材 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SCM420RCH / SCM420RCH
Category Grade Standard Region/Area Standard Content
Metals SCM420RCH JIS G3509-1 Japan 低合金冷镦钢 - 第1部分:线材

Chemical composition(mass fraction)(wt.%) of the SCM420RCH

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mo 0.1500 0.2500 -
Mn 0.6000 0.9000 -
Cu - 0.3000 -
Cr 0.9000 1.2000 -
C 0.1800 0.2300 -

Mechanical Properties of steel grade SCM420RCH

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)
747 (≥) 414 (≥) 21 33 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade SCM420RCH

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
12 - -     0.21 -  
881 879 - 41.3 332   -  
793 - 14 11.2   422 114

Heat Treatment of steel grade SCM420RCH

Heat treated : 1887°C - 1211°C

Technological Curves of steel grade SCM420RCH

Cross Reference Table (Equivalent Grade) of SCM420RCH

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