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Japan JIS SKS4 合金工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SKS4 / SKS 4
Category Grade Standard Region/Area Standard Content
Metals SKS 4 JIS G4404 Japan 合金工具钢

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

Element Min Max Similar
W 0.5000 1.0000 -
Si - 0.3500 -
S - 0.0300 -
P - 0.0300 -
Mn - 0.5000 -
Cr 0.5000 1.0000 -
C 0.4500 0.5500 -

Mechanical Properties of steel grade SKS 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)
924 (≥) 326 (≥) 21 31 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 231

Physical Properties of steel grade SKS 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
14 - -     0.22 -  
148 828 - 31.3 233   -  
352 - 11 34.2   124 211

Heat Treatment of steel grade SKS 4

Heat treated : 1717°C - 1332°C

Technological Curves of steel grade SKS 4

Cross Reference Table (Equivalent Grade) of SKS 4

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