ISO 683-3:2019 热处理钢、合金钢和易切削钢 第3部分：表面硬化钢

标准编号：ISO 683-3:2019

中文名称：热处理钢、合金钢和易切削钢 第3部分：表面硬化钢

英文名称：Heat-treatable steels, alloy steels and free-cutting steels — Part 3: Case-hardening steels

发布日期：2019-01

标准范围

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，-平面成品，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成，并按照表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供应。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中-成品或棒材，但不在“锤锻和落锻”项下。注2: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，请参阅参考文献，这些钢材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，或用于特殊用途。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A）。除本文件外，ISO 404的一般技术交付要求也适用。

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 hammer-forged 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 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.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 A).In addition to this document, the general technical delivery requirements of ISO 404 are applicable.

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