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Japan JIS SKS7 合金工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SKS7 / SKS 7
Category Grade Standard Region/Area Standard Content
Metals SKS 7 JIS G4404 Japan 合金工具钢

Chemical composition(mass fraction)(wt.%) of the SKS 7

Element Min Max Similar

Mechanical Properties of steel grade SKS 7

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)
674 (≥) 541 (≥) 13 24 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade SKS 7

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
31 - -     0.43 -  
248 897 - 42.3 321   -  
477 - 24 21.2   143 442

Heat Treatment of steel grade SKS 7

Heat treated : 1778°C - 1233°C

Technological Curves of steel grade SKS 7

Cross Reference Table (Equivalent Grade) of SKS 7

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