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.