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Japan JIS SUM31 易切削碳钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SUM31 / SUM 31
Category Grade Standard Region/Area Standard Content
Metals SUM 31 JIS G4804 Japan 易切削碳钢

Chemical composition(mass fraction)(wt.%) of the SUM 31

Element Min Max Similar
Si - - -
S 0.0800 0.1300 -
P - 0.0400 -
Mn 1.0000 1.3000 -
C 0.1400 0.2000 -

Mechanical Properties of steel grade SUM 31

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)
133 (≥) 498 (≥) 31 23 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade SUM 31

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
34 - -     0.33 -  
417 291 - 24.3 124   -  
969 - 41 24.2   331 411

Heat Treatment of steel grade SUM 31

Heat treated : 1661°C - 1484°C

Technological Curves of steel grade SUM 31

Cross Reference Table (Equivalent Grade) of SUM 31

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