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Japan JIS SK7 碳工具鋼鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SK7 / SK7
Category Grade Standard Region/Area Standard Content
Metals SK7 JIS G4401 Japan 碳工具鋼鋼料

Chemical composition(mass fraction)(wt.%) of the SK7

Element Min Max Similar

Mechanical Properties of steel grade SK7

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)
271 (≥) 638 (≥) 33 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade SK7

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
41 - -     0.21 -  
435 438 - 11.3 423   -  
771 - 13 42.2   213 131

Heat Treatment of steel grade SK7

Heat treated : 1373°C - 1851°C

Technological Curves of steel grade SK7

Cross Reference Table (Equivalent Grade) of SK7

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