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Japan JIS SUM25 易切削碳钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SUM25 / SUM 25
Category Grade Standard Region/Area Standard Content
Metals SUM 25 JIS G4804 Japan 易切削碳钢

Chemical composition(mass fraction)(wt.%) of the SUM 25

Element Min Max Similar
Si - - -
S 0.3000 0.4000 -
P 0.0700 0.1200 -
Mn 0.9000 1.4000 -
C - 0.1500 -

Mechanical Properties of steel grade SUM 25

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)
746 (≥) 752 (≥) 43 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade SUM 25

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
22 - -     0.12 -  
876 936 - 12.3 224   -  
848 - 31 13.2   232 321

Heat Treatment of steel grade SUM 25

Heat treated : 1178°C - 1691°C

Technological Curves of steel grade SUM 25

Cross Reference Table (Equivalent Grade) of SUM 25

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