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Japan JIS SUP7 彈簧鋼鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SUP7 / SUP 7
Category Grade Standard Region/Area Standard Content
Metals SUP 7 JIS G4801 Japan 彈簧鋼鋼料

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

Element Min Max Similar
Si 1.8000 2.2000 -
S - 0.0300 -
P - 0.0300 -
Mn 0.7000 1.0000 -
Cu - 0.3000 -
C 0.5600 0.6400 -

Mechanical Properties of steel grade SUP 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)
693 (≥) 266 (≥) 32 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade SUP 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
32 - -     0.24 -  
996 925 - 44.3 433   -  
333 - 13 42.2   421 122

Heat Treatment of steel grade SUP 7

Heat treated : 1653°C - 1445°C

Technological Curves of steel grade SUP 7

Cross Reference Table (Equivalent Grade) of SUP 7

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