The hardness of steel balls is determined by steel balls made of different materials. Common steel balls include stainless steel balls, bearing steel balls, carbon steel balls, and hard alloy steel balls. What are the factors that lead to different hardnesses of steel balls of different materials?
The hardness of the steel ball is directly affected by the heat treatment process, that is, quenching and tempering. In the heat treatment process, the bearing steel ball undergoes quenching and tempering, and its internal metallographic structure changes, resulting in a change in hardness. However, the stainless steel ball cannot be heat-treated. Because stainless steel is austenitic steel, the heat-treatment process cannot be carried out due to its own conditions.
Due to the effect of heat treatment, the hardness of the bearing steel ball can reach HRC55-HRC62. The hardness of stainless steel balls that cannot be heat-treated is HRC28-HRC35. Steel balls with different hardness have different application ranges. When you buy steel balls, you can choose to use different materials according to your environment.
316 stainless steel ball in WeiChuang,the precision are G5，G10 and G16.
And Chrome ball usually produce according to GBT 308.1-2013 and ISO 3290-1:2014 standards.