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Japan JIS SK4M 冷轧特钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SK4M / SK 4 M
Category Grade Standard Region/Area Standard Content
Metals SK 4 M JIS G3311 Japan 冷轧特钢板

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

Element Min Max Similar
Si - 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mn - 0.5000 -
Cu - 0.2500 -
Cr - 0.3000 -
C 0.9000 1.0000 -

Mechanical Properties of steel grade SK 4 M

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)
983 (≥) 591 (≥) 41 33 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade SK 4 M

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
33 - -     0.42 -  
855 492 - 23.3 212   -  
956 - 22 14.2   231 241

Heat Treatment of steel grade SK 4 M

Heat treated : 1575°C - 1851°C

Technological Curves of steel grade SK 4 M

Cross Reference Table (Equivalent Grade) of SK 4 M

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