本文件规定了以下各项的技术交付要求: -？热成型半成品（如初轧坯、钢坯、板坯）（见注1）， -？钢筋（见注1）， -？线材， -？成品平板，以及 -锤锻或落锻（见注1） 由表3中列出的表面硬化非合金钢或合金钢制造，并在表1中为不同类型的产品提供的一种热处理条件和表2给出的一种表面条件下提供。 这些钢通常用于制造表面硬化的机械零件。 注1:锤锻半成品（初轧坯、钢坯、板坯等）、无缝轧制环件和锤锻棒材包含在半成品或棒材中，而不包含在术语“锤锻和落锻”中。 注2:有关符合表3中化学成分要求的钢材的国际标准，但以除上述产品形式或处理条件外的其他产品形式或处理条件供应，或用于特殊应用，以及其他相关国际标准，请参见参考书目。

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) manufactured from the case-hardening non-alloy or alloy steels listed in Table？3 and supplied in one of the heat-treatment conditions given for the different types of products in Table？1 and in one of the surface conditions given in Table？2. 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.