GCr18Mo Bearing Steel

GCr18Mo is a new bearing material with high hardenability. By using the lower bainite isothermal quenching heat treatment process, the lower bainite structure and higher residual austenite content can be obtained, and it has higher impact toughness and fracture toughness.

Product Description

GCr18Mo Bearing SteelProduct Introduction GCr18Mo is a new type of bearing material with high hardenability. By adopting the isothermal quenching and heat treatment process of lower bainite, lower bainite structure and higher residual austenite content can be obtained, with higher impact toughness and fracture toughness.


Chemical composition
 

Element	C	Si	Mn	P	S
content(%)	0.95-1.05	0.2-0.4	0.25-0.4	≤0.025	≤0.02
Element	Cr	Mo	Ni	Cu
content(%)	1.65-1.95	0.15-0.25	≤0.25	≤0.25

Mechanical Property
 

softening annealing	normalizing
temperature/ºC	cooling	Hardness HBW	temperature/ºC	cooling	Hardness HBW
810-820	furnace cooling	≤200	900-950	air cooling	270-390
isothermal annealing	high-temperature tempering
heating temperature/ºC	isothermal temperature/ºC	cooling	Hardness HBW	temperature/ºC	Hardness HBW
780-810	710-720	air cooling	207-229	650-700	229-285
quenching	tempering
temperature/ºC	cooling	Hardness HRC	temperature/ºC	Hardness HRC
850-870	oil cooling	≥60	150-200	≥60

Product Application  GCr18Mo is used to manufacture large bearings for important types of machinery such as railway vehicles.

The last but not leastGCr18Mo Bearing Steel can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe.

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