scope:

This document specifies the technical delivery requirements for five groups of wrought ball and roller bearing steels as listed in Table 3, namely

- through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr),

- case-hardening bearing steels,

- induction-hardening bearing steels (unalloyed and alloyed),

- stainless bearing steels, and

- high-temperature bearing steels.

This document is applicable to the products and heat-treatment conditions given in Table 1 and the surface conditions given in Table 2.