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Japan JIS SCM4 Chromium molybdenum steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SCM4 / SCM 4
Category Grade Standard Region/Area Standard Content
Metals SCM 4 JIS G4105 Japan Chromium molybdenum steels

Chemical composition(mass fraction)(wt.%) of the SCM 4

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.8500 -
Cu - 0.3000 -
Cr 0.9000 1.2000 -
C 0.3800 0.4300 -

Mechanical Properties of steel grade SCM 4

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)
246 (≥) 597 (≥) 22 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade SCM 4

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
41 - -     0.44 -  
721 976 - 22.3 412   -  
391 - 24 44.2   413 312

Heat Treatment of steel grade SCM 4

Heat treated : 1663°C - 1789°C

Technological Curves of steel grade SCM 4

Cross Reference Table (Equivalent Grade) of SCM 4

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