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Japan JIS S20C 机械结构用碳素钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S20C / S 20 C
Category Grade Standard Region/Area Standard Content
Metals S 20 C JIS G4051 Japan 机械结构用碳素钢

Chemical composition(mass fraction)(wt.%) of the S 20 C

Element Min Max Similar
Si 0.5100 0.4000 -
S - 0.0400 -
P - 0.0350 -
Mn 0.3000 0.6000 -
C 0.1500 0.2500 -
Si 0.1500 0.3500 -
S - 0.0350 -
P - 0.0300 -
Ni+Cr - 0.3500 -
Ni - 0.2000 -
Mn 0.3000 0.6000 -
Cu - 0.3000 -
Cr - 0.2000 -
C 0.1800 0.2300 -

Mechanical Properties of steel grade S 20 C

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)
724 (≥) 933 (≥) 14 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade S 20 C

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
42 - -     0.14 -  
499 322 - 34.3 112   -  
658 - 11 13.2   113 124

Heat Treatment of steel grade S 20 C

Heat treated : 1855°C - 1746°C

Technological Curves of steel grade S 20 C

Cross Reference Table (Equivalent Grade) of S 20 C

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