During the consumption process of bearing parts, there are many cold and hot processing processes. In order to meet the requirements of small quantities, high efficiency, and high quality, bearing steel should have good processing performance. For example, cold and hot forming performance, cutting performance, hardenability, etc. Bearing steel should also meet the requirements of appropriate chemical composition, average external structure, less non-metallic impurities, external appearance defects that meet specifications, and external decarburization layer that does not exceed the regular concentration.