1.1 本规范规定了由铜合金UNS编号C17000和C17200生产的铜铍合金锻件和挤压件的要求。 注1: 规范中对铜铍合金棒材的要求 196米/196米 （第2节）。 1.2 除非另有规定，否则UNS编号为C17200的铜合金应为规范规定的合金 B570型 未指定合金名称。 1.3 单位- 以英寸磅单位表示的值应视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。 1.4 以下安全危险警告仅适用于本规范中描述的试验方法: 1.4.1 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。

1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions produced from Copper Alloy UNS Nos. C17000 and C17200. Note 1: Requirements for copper-beryllium alloy rod and bar appear in Specification B196/B196M (Section 2). 1.2 Unless otherwise specified, Copper Alloy UNS No. C17200 shall be the alloy furnished whenever Specification B570 is specified without an alloy designation. 1.3 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 The following safety hazard caveat pertains only to the test method(s) described in this specification: 1.4.1 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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.