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Classification of bearing steel

2015-08-13

In 1976, the International Organization for Standardization ISO incorporated some general bearing steel numbers into international standards, and divided the bearing steel into four categories: fully hardened bearing steel, surface hardened bearing steel, stainless bearing steel, high temperature bearing steel, and a total of 17 categories Steel number. Some countries add a category for special purpose bearing steel or alloy.

The classification method of bearing steelin China is similar to that of ISO.

corresponding to the four categories are :high-carbon chromium bearing steel, carburized bearing steel, stainless corrosion-resistant bearing steel, high-temperature bearing steel.

In the past 50 years,China has also made great progress in bearing steel grades and their bearing materials, such as chromium-free bearing steel, medium carbon bearing steel, special-purpose bearing steel and alloys, metal ceramics, etc.