Bearing steel is the raw material for traditional bearings. According to the raw materials, bearings can be divided into bearing steel bearings and stainless steel plate bearings, as well as some less-used aluminum alloy profile bearings. Bearing steel has very strict composition regulations, so the organic chemical characteristics of bearing steel bearings are very stable, and there will be no big difference in mass production. Today I will introduce to you what is bearing steel bearing and other properties! Bearing 1. What is bearing steel bearing In simple terms, the steel used for bearings is called bearing steel. Bearing steel is also known as high carbon manganese steel, the carbon content Wc is about 1%, and the magnesium content Wcr is 0.5%-1.65%. The bearing steel is divided into six types: high carbon chromium bearing steel, chromium-free bearing steel, nitrided bearing steel, stainless steel bearing steel, medium and high temperature bearing steel and antimagnetic bearing steel. Bearing steel is used to manufacture steel balls, worm shafts and bearing throw rings. Bearing steel has high uniform hardness and wear resistance and high elastic limit. Bearing steel has strict requirements on the compositional symmetry, the composition and distribution of non-metallic materials, and the distribution of cementite. It is one of the most stringent steel grades in the production of all steels. 2. Performance requirements of bearing steel In order to meet the above requirements for bearing capacity of movable bearings, the following basic performance requirements are clearly put forward for bearing steel raw materials: 1. High contact fatigue limit; 2. After heat treatment, it should have high hardness or energy. Reach the hardness specified by bearing application performance; 3. High wear resistance and low friction resistance; 4. High ductility limit; 5. Excellent fracture toughness and impact toughness; 6. Excellent specification reliability; 7. Excellent rust prevention Handling performance; 8. Excellent cold and heat treatment performance.