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China GB 20Cr 合金结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20Cr / 20Cr
Category Grade Standard Region/Area Standard Content
Metals 20Cr GB/T 3077 China 合金结构钢

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

Element Min Max Similar

Mechanical Properties of steel grade 20Cr

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)
533 (≥) 954 (≥) 11 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade 20Cr

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 - -     0.41 -  
545 459 - 44.3 423   -  
248 - 32 12.2   244 422

Heat Treatment of steel grade 20Cr

Heat treated : 1218°C - 1445°C

Technological Curves of steel grade 20Cr

Cross Reference Table (Equivalent Grade) of 20Cr

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