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China CGMA 25MnCr5 车辆齿轮用钢 技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25MnCr5 / 25MnCr5
Category Grade Standard Region/Area Standard Content
Metals 25MnCr5 CGMA001-1 China 车辆齿轮用钢 技术条件

Chemical composition(mass fraction)(wt.%) of the 25MnCr5

Element Min Max Similar

Mechanical Properties of steel grade 25MnCr5

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)
356 (≥) 986 (≥) 23 34 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade 25MnCr5

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
32 - -     0.41 -  
371 132 - 32.3 433   -  
185 - 43 32.2   411 244

Heat Treatment of steel grade 25MnCr5

Heat treated : 1714°C - 1133°C

Technological Curves of steel grade 25MnCr5

Cross Reference Table (Equivalent Grade) of 25MnCr5

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