ISO 683-2:2016规定了 -热成型半成品，如初轧坯、钢坯、板坯（见注1）， -钢筋（见注1）， -线材， 平面成品，以及 -锤锻或落锻（见注1） 由表3中列出的直接硬化合金钢和合金火焰硬化和感应硬化钢制成，并在表1中为不同类型产品规定的一种热处理条件和表2中规定的一种表面条件下供应。 一般来说，这些钢用于制造淬火、回火或等温淬火钢（见3）。 2）和注2）以及火焰或感应淬火的机器零件（见表8和表9）。 ISO 683-2:2016中给出的机械性能要求仅限于相关表8中给出的尺寸。 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以下半成品或棒材中，而不包含在术语“锤锻和落锻”中。 注2:为简化起见，除非另有说明，否则术语“淬火和回火”在下文中也用于等温淬火条件。 注3:有关符合表3中化学成分要求的钢材的国际标准，以及其他相关国际标准，请参见参考文献，这些钢材以其他产品形式或处理条件供应，而非上述形式或用于特殊用途。 注4:ISO 683-2:2016不适用于冷镦用光亮产品、棒材和线材。有关此类产品，请参见ISO 683-18和ISO 4954。 在特殊情况下，这些技术交付要求的变更或补充可在询价和订购时形成协议（见5）。 2和附件B）。 除ISO 683-2:2016外，ISO 404的一般技术交付要求也适用。

ISO 683-2:2016 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 direct hardening alloy steels and the alloy flame- and induction-hardening 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 quenched and tempered or austempered (see 3.2 and Note 2) and flame- or induction-hardened machine parts (see Tables 8 and 9). The requirements for mechanical properties given in ISO 683-2:2016 are restricted to the sizes given in the relevant Table 8. NOTE 1 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are in the following covered under semi-finished products or bars and not under the term "hammer and drop forgings". NOTE 2 For the purposes of simplification, the term "quenched and tempered" is, unless otherwise indicated, used in the following also for the austempered condition. NOTE 3 For International Standards relating to steels complying 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. NOTE 4 ISO 683-2 :2016 does not apply to bright products and bars and wire rod for cold heading. For such products, see ISO 683？18 and ISO 4954. In special cases, variations in these technical delivery requirements or additions to them can form the subject of an agreement at the time of enquiry and order (see 5.2 and Annex B). In addition to ISO 683-2:2016, the general technical delivery requirements of ISO 404 are applicable.