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Japan JIS S20CK 机械结构用碳素钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S20CK / S 20 CK
Category Grade Standard Region/Area Standard Content
Metals S 20 CK JIS G4051 Japan 机械结构用碳素钢

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

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0250 -
P - 0.0250 -
Ni+Cr - 0.3000 -
Ni - 0.2000 -
Mn 0.3000 0.6000 -
Cu - 0.2500 -
Cr - 0.2000 -
C 0.1800 0.2300 -

Mechanical Properties of steel grade S 20 CK

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)
737 (≥) 167 (≥) 23 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade S 20 CK

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 -  
472 741 - 43.3 114   -  
259 - 34 44.2   442 211

Heat Treatment of steel grade S 20 CK

Heat treated : 1373°C - 1129°C

Technological Curves of steel grade S 20 CK

Cross Reference Table (Equivalent Grade) of S 20 CK

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