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China JB S20MnCr 合金结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S20MnCr / S20MnCr
Category Grade Standard Region/Area Standard Content
Metals S20MnCr JB/ZQ 4288 China 合金结构钢

Chemical composition(mass fraction)(wt.%) of the S20MnCr

Element Min Max Similar
C 0.1700 0.2200 -
Si 0.1500 0.4000 -
Mn 1.0000 1.4000 -
P - 0.0350 -
S - 0.0350 -
Cr 1.1000 1.3000 -
Ni - 0.3500 -
Cu - 0.2000 -

Mechanical Properties of steel grade S20MnCr

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)
265 (≥) 611 (≥) 42 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade S20MnCr

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
13 - -     0.22 -  
458 965 - 11.3 233   -  
123 - 23 22.2   322 314

Heat Treatment of steel grade S20MnCr

Heat treated : 1137°C - 1778°C

Technological Curves of steel grade S20MnCr

Cross Reference Table (Equivalent Grade) of S20MnCr

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