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Japan JIS CS70 弹簧用冷轧钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CS70 / CS70
Category Grade Standard Region/Area Standard Content
Metals CS70 JIS G4802 Japan 弹簧用冷轧钢带

Chemical composition(mass fraction)(wt.%) of the CS70

Element Min Max Similar

Mechanical Properties of steel grade CS70

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)
813 (≥) 354 (≥) 24 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade CS70

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 - -     0.43 -  
382 867 - 32.3 441   -  
957 - 13 44.2   324 323

Heat Treatment of steel grade CS70

Heat treated : 1447°C - 1279°C

Technological Curves of steel grade CS70

Cross Reference Table (Equivalent Grade) of CS70

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