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Japan JIS SK4 碳工具鋼鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SK4 / SK4
Category Grade Standard Region/Area Standard Content
Metals SK4 JIS G4401 Japan 碳工具鋼鋼料

Chemical composition(mass fraction)(wt.%) of the SK4

Element Min Max Similar

Mechanical Properties of steel grade SK4

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)
153 (≥) 835 (≥) 22 44 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade SK4

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 - -     0.33 -  
932 671 - 14.3 441   -  
518 - 12 32.2   323 443

Heat Treatment of steel grade SK4

Heat treated : 1374°C - 1763°C

Technological Curves of steel grade SK4

Cross Reference Table (Equivalent Grade) of SK4

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