1.1 该分类涵盖了铜和铜合金（锻造和铸造）的回火名称。回火名称根据制造所涉及产品的过程及其产生的性能进行分类。它不是铜和铜合金的规格。 1.2 回火的性能要求在适用的产品规范中给出。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 4.1 意义-- 这种分类建立了铜和铜合金产品回火的字母数字代码。 4.2 使用-- 字母数字代码建立了一个系统，通过该系统指定了规格和发布数据中的产品温度。 4.2.1 代码中的字母标识了用于生产产品回火的工艺类型。例如，“H”表示冷加工产生的脾气。 注1: 这些字母通常与其他金属制品回火系统中使用的字母相同。 注2: 在先前的回火系统中使用的未定义字母，以及本系统中包含的参考字母，在 附录X1 .

1.1 This classification covers temper designations for copper and copper alloys—wrought and cast. The temper designations are classified by the process or processes used in manufacturing the product involved and its resulting properties. It is not a specification of copper and copper alloys. 1.2 The property requirements for the tempers are given in the applicable product specification. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Significance— This classification establishes an alphanumeric code of the tempers of copper and copper alloy products. 4.2 Use— An alphanumeric code establishes a system by which product tempers in specifications and published data are designated. 4.2.1 The letters in the code identify the type of process used to produce the product temper. For example, “H” indicates a temper resulting from cold working. Note 1: These letters are frequently the same as those used in temper systems of other metal products. Note 2: Undefined letters, used in prior temper systems and included in this system for reference, are defined in Appendix X1 .