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Japan JIS SUM42 易切削碳钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SUM42 / SUM 42
Category Grade Standard Region/Area Standard Content
Metals SUM 42 JIS G4804 Japan 易切削碳钢

Chemical composition(mass fraction)(wt.%) of the SUM 42

Element Min Max Similar
Si - - -
S 0.0800 0.1300 -
P - 0.0400 -
Mn 1.3500 1.6500 -
C 0.3700 0.4500 -

Mechanical Properties of steel grade SUM 42

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)
313 (≥) 429 (≥) 44 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade SUM 42

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 - -     0.21 -  
431 877 - 14.3 231   -  
325 - 21 24.2   311 142

Heat Treatment of steel grade SUM 42

Heat treated : 1681°C - 1753°C

Technological Curves of steel grade SUM 42

Cross Reference Table (Equivalent Grade) of SUM 42

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