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Global 企业标准 28mncr5 低合金齿轮钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 28mncr5 / 28mncr5
Category Grade Standard Region/Area Standard Content
Metals 28mncr5 -- Global 低合金齿轮钢

Chemical composition(mass fraction)(wt.%) of the 28mncr5

Element Min Max Similar
Si - 0.2500 -
C 0.2500 0.3000 -
Mn 0.5000 0.8000 -
S 0.0100 0.0350 -
P - 0.0350 -
Cr 0.8000 1.1000 -
Ni - 0.3000 -
Mo - 0.1500 -

Mechanical Properties of steel grade 28mncr5

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)
436 (≥) 315 (≥) 33 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade 28mncr5

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
14 - -     0.34 -  
851 667 - 44.3 413   -  
536 - 22 22.2   123 412

Heat Treatment of steel grade 28mncr5

Heat treated : 1968°C - 1162°C

Technological Curves of steel grade 28mncr5

Cross Reference Table (Equivalent Grade) of 28mncr5

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