SUJ3 special steel, under JIS G4805, high carbon chromium bearing steel. JIS SUJ3 special steel is a measuring tool used steel. Its hardenability, hardness and wear resistance are higher than the carbon tool steel, while heat treatment size change is not large.

Katalor is available to supply JIS SUJ3 special steel bars, JIS SUJ3 bearing steel round bars, SUJ3 hot rolled round bars with competitive price.

JIS G4805 SUJ3 Chemical Composition(%)

SUJ3 is mainly used to manufacture rolling bearing parts such as balls, rollers and bearing rings, etc. They are subjected to high concentrated alternating loads during operation due to the small contact area between the balls and the bearing rings. As well as sliding, will have a lot of friction, so rolling bearing steel should have a high hardness, wear resistance and fatigue strength, the steel microstructure, chemical composition requirements are very strict, otherwise shorten the use of bearings Life. General rolling bearing steel containing high carbon content, in the range of 0.95-1.1%, and add some alloying elements, such as chromium, manganese, etc.

SUJ3 bearing steel, containing Mn, is suitable for the large thickness of large objects, wear, used as bearings. SUJ3 bearing steel is widely used in industry, agriculture, aquaculture, construction, transportation, mining, Wuxi, Charge and other aspects.