Describes 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 bearig steels, - induction-hardening bearing steels (unalloyed and alloyed), - stainless bearing steels, and - high-temperature bearing steels.