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China GB GCr18Mo 高碳铬轴承钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GCr18Mo / GCr18Mo
Category Grade Standard Region/Area Standard Content
Metals GCr18Mo GB/T 18254 China 高碳铬轴承钢

Chemical composition(mass fraction)(wt.%) of the GCr18Mo

Element Min Max Similar
Si 0.2000 0.4000 -
S - 0.0200 -
P - 0.0250 -
Ni - 0.2500 -
Mo 0.1500 0.2500 -
Mn 0.2500 0.4000 -
Cu - 0.2500 -
Cr 1.6500 1.9500 -
C 0.9500 1.0500 -

Mechanical Properties of steel grade GCr18Mo

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)
236 (≥) 956 (≥) 34 43 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade GCr18Mo

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 - -     0.13 -  
626 562 - 42.3 441   -  
768 - 33 11.2   443 434

Heat Treatment of steel grade GCr18Mo

Heat treated : 1793°C - 1913°C

Technological Curves of steel grade GCr18Mo

Cross Reference Table (Equivalent Grade) of GCr18Mo

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