G20CrNi2Mo Ball Bearing Steel Bar

 

G20CrNi2Mo is a rolling bearing steel implementation of the standard: GB / T 3203-1982; corresponding to the US brand 4320H implementation of standards ASTM A534-04; Japan brand SNCM420 implementation of the standard JIS G4053-2008; German brand 20NiCrMo7 implementation standards EN ISO 683 / 17- 1999; G20CrNi2Mo is a commonly used alloy carburized steel, carburized after the surface has a very high hardness, wear resistance and contact fatigue strength, while the heart also retains good toughness, can withstand high impact load. Mainly used for railway bearings and other impact-resistant, wear-resistant parts.

 

Chemical composition(mass fraction)(wt.%) of the G20CrNi2Mo:

 

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)Cu(%)
0.17-0.230.15-0.400.40-0.700.030.030.35-0.651.60-2.000.20-0.30Max 0.25

 

Chemical composition(mass fraction)(wt.%) of the G20CrNi2Mo:

 

Yield
Rp0.2(MPa)
Tensile
Rm(MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture Z (%)As-Heat-Treated ConditionHBW
398 (≥)713 (≥)214313Solution and Aging, Annealing, Ausaging, Q+T,etc342

 

 

 

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