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20CrNiMoH2

China CGMA 20CrNiMoH2 车辆齿轮用钢 技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20CrNiMoH2 / 20CrNiMoH2
Category Grade Standard Region/Area Standard Content
Metals 20CrNiMoH2 CGMA001-1 China 车辆齿轮用钢 技术条件

Chemical composition(mass fraction)(wt.%) of the 20CrNiMoH2

Element Min Max Similar
Cu - 0.2000 -
Al 0.0200 0.0450 -
Mo 0.1500 0.2500 -
Cr 0.3500 0.6500 -
Ni 0.3500 0.7500 -
S 0.0170 0.0320 -
P - 0.0300 -
Mn 0.6000 0.9500 -
Si 0.1500 0.3500 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade 20CrNiMoH2

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)
743 (≥) 222 (≥) 31 42 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 20CrNiMoH2

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
43 - -     0.43 -  
855 392 - 34.3 414   -  
154 - 41 11.2   332 223

Heat Treatment of steel grade 20CrNiMoH2

Heat treated : 1318°C - 1792°C

Technological Curves of steel grade 20CrNiMoH2

Cross Reference Table (Equivalent Grade) of 20CrNiMoH2

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