1.1 本规范涵盖了由编号为C51000、C51100、C51180、C51900、C52100、C52180、C52400、C53400和C54400的铜合金UNS生产的通用铜锡合金（磷青铜）、铜锡铅合金（铅磷青铜）和铜锡铅锌合金（轴承青铜）、板、薄板、带材和轧制棒材的要求。磷青铜通常用于深拉波纹管、冲压成型弹簧装置以及电气设备的端子和连接器，因为它们结合了高强度和高伸长率。 含铅磷青铜用于要求强度、耐腐蚀性和可加工性的地方。轴承青铜用于衬套、轴承和承重止推垫圈。 注1: 所有上述合金都含有少量的磷，在熔化时用作脱氧剂，以提高机械性能。 1.2 单位-- 以英寸磅单位或国际单位制表示的数值应单独视为标准。在正文中，国际单位制显示在括号中。 每个系统中规定的值不一定是完全相等的；因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1.3 以下安全隐患警告仅适用于本规范中描述的测试方法。 本标准并非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制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 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。

1.1 This specification covers the requirements for copper-tin alloy (phosphor bronze), copper-tin-lead alloy (leaded phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze), plate, sheet, strip, and rolled bar for general application produced from Copper Alloy UNS Nos. C51000, C51100, C51180, C51900, C52100, C52180, C52400, C53400, and C54400. The phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings, bearings, and load-bearing thrust washers. Note 1: All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties. 1.2 Units— The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification. 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. 1.4 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.