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Japan JIS SUJ4 高碳鉻軸承鋼鋼料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SUJ4 / SUJ 4
Category Grade Standard Region/Area Standard Content
Metals SUJ 4 JIS G4805 Japan 高碳鉻軸承鋼鋼料

Chemical composition(mass fraction)(wt.%) of the SUJ 4

Element Min Max Similar

Mechanical Properties of steel grade SUJ 4

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)
624 (≥) 296 (≥) 34 32 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade SUJ 4

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 - -     0.21 -  
891 774 - 33.3 444   -  
383 - 31 32.2   211 142

Heat Treatment of steel grade SUJ 4

Heat treated : 1237°C - 1567°C

Technological Curves of steel grade SUJ 4

Cross Reference Table (Equivalent Grade) of SUJ 4

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