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China GB 20CrMn5 合金结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20CrMn5 / 20CrMn5
Category Grade Standard Region/Area Standard Content
Metals 20CrMn5 -- China 合金结构钢

Chemical composition(mass fraction)(wt.%) of the 20CrMn5

Element Min Max Similar
Cu - 0.0300 -
Ni - 0.0300 -
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.9000 1.2000 -
Si 0.1700 0.3700 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade 20CrMn5

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)
437 (≥) 988 (≥) 34 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 20CrMn5

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
11 - -     0.34 -  
594 382 - 34.3 314   -  
296 - 44 22.2   343 342

Heat Treatment of steel grade 20CrMn5

Heat treated : 1234°C - 1866°C

Technological Curves of steel grade 20CrMn5

Cross Reference Table (Equivalent Grade) of 20CrMn5

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