24 July 2021 Ball Bearing Steel Bar
JIS SUJ3 Ball Bearing Steel Bar
SUJ3 is a measuring tool with a steel, this steel composition and GCr9SiMn bearing steel, its hardenability, hardness and wear resistance are higher than the carbon tool steel, heat treatment size change is not large. 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.
Many to bad annealing delivery, before use, to be quenched and low temperature Rusted.SUJ3 bearing steel containing Mn, 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.
JIS SUJ3 Chemical Composition:
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Ni(%) | Cu(%) |
0.95-1.10 | 0.90-1.15 | ≦0.025 | ≦0025 | 0.9-1.2 | ≦0.08 | ≦0.25 | ≦0.25 | ≦0.25 |