scope:

This document specifies the technical delivery requirements for

- semi-finished products, hot formed (e.g. blooms, billets, slabs) (see NOTE 1),

- bars (see NOTE 1),

- wire rod,

- finished flat products, and

- hammer or drop forgings (see NOTE 1)

The steels are, in general, intended for the manufacture of case-hardened machine parts.

NOTE 1 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammerforged bars are covered under semi-finished products or bars and not under the term "hammer and drop forgings".

NOTE 2 For International Standards relating to steels conforming with the requirements for the chemical composition in Table 3, however, supplied in other product forms or treatment conditions than given above or intended for special applications, and for other related International Standards, see the Bibliography.