1.1 本规范涵盖了用于制造UNS号C22000铜合金弹头壳杯和弹药部件的商用青铜条的要求。 2. 1.2 单位-- 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 以下安全危险警告仅适用于本规范中描述的测试方法。 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。 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。 1.4 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。 =====意义和用途====== 17.1 为了确定下表所列属性是否符合规定的属性限制，计算值的观察值应按照惯例的四舍五入方法进行四舍五舍五入 E29 : 房地产 圆形单位用于观察或 计算值 化学成分 硬度 最后右手边最近的单位 用于表达的有效数字 极限值。 抗拉强度 最近的ksi（5 MPa） 粒度: 最大0.055毫米，包括 0.005毫米的最近倍数 超过0.055毫米至0.160毫米，包括 最接近0.01毫米 伸长率: 5%及以上 最接近1%

1.1 This specification covers the requirements for commercial bronze strip for manufacture of bullet jacket cups and ammunition components from Copper Alloy UNS No. C22000. 2 1.2 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. 1.3 The following safety hazard caveat pertains only to the test methods 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. ====== Significance And Use ====== 17.1 For purposes of determining compliance with the specified property limits for the properties listed in the following table, an observed value of a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29 : Property Rounded Unit for Observed or Calculated Value Chemical composition Hardness nearest unit in the last right-hand significant digit used in expressing the limiting value. Tensile strength nearest ksi (5 MPa) Grain size: Up to 0.055 mm, incl nearest multiple of 0.005 mm Over 0.055 mm to 0.160 mm, incl nearest 0.01 mm Elongation: 5 % and over nearest 1 %