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Japan JIS SK4-CSP 弹簧用冷轧钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SK4-CSP / SK 4-CSP
Category Grade Standard Region/Area Standard Content
Metals SK 4-CSP JIS G4802 Japan 弹簧用冷轧钢带

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

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-CSP

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)
399 (≥) 822 (≥) 21 12 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade SK 4-CSP

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
32 - -     0.32 -  
834 147 - 42.3 443   -  
819 - 33 43.2   334 333

Heat Treatment of steel grade SK 4-CSP

Heat treated : 1564°C - 1771°C

Technological Curves of steel grade SK 4-CSP

Cross Reference Table (Equivalent Grade) of SK 4-CSP

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