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Korea KS SCM4H 指定的淬透性结构钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SCM4H / SCM 4 H
Category Grade Standard Region/Area Standard Content
Metals SCM 4 H KS D 3754 Korea 指定的淬透性结构钢带

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

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mo 0.1500 0.3500 -
Mn 0.5500 0.9000 -
Cu - 0.3000 -
Cr 0.8500 1.2500 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade SCM 4 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)
167 (≥) 977 (≥) 23 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade SCM 4 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
11 - -     0.41 -  
474 779 - 42.3 422   -  
837 - 34 14.2   343 143

Heat Treatment of steel grade SCM 4 H

Heat treated : 1857°C - 1769°C

Technological Curves of steel grade SCM 4 H

Cross Reference Table (Equivalent Grade) of SCM 4 H

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