1.1 这些试验方法描述了确定氧化亚铜（Cu）存在的程序 2. O） 在由脱氧和无氧铜制成的产品中。 1.2 试验方法按以下顺序出现: 小节 未经热处理的显微镜检查 9 – 11 热处理后的显微镜检查 13 – 15 热处理后的闭合弯曲试验 17 – 19 热处理后反向弯曲试验 21 – 23 1.3 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 1.5 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。 ====意义和用途====== 5.1 这些试验方法确定铜产品在还原性气氛中暴露于高温时是否耐脆化。 5.1.1 假设所有使用这些测试方法的人员都是经过培训的人员，能够熟练、安全地执行这些程序。预计工作将在配备适当的设施中进行。

1.1 These test methods describe procedures for determining the presence of cuprous oxide (Cu 2 O) in products made from deoxidized and oxygen-free copper. 1.2 The test methods appear in the following order: Sections Microscopical Examination without Thermal Treatment 9 – 11 Microscopical Examination after Thermal Treatment 13 – 15 Closed Bend Test after Thermal Treatment 17 – 19 Reverse Bend Test after Thermal Treatment 21 – 23 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 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. ====== Significance And Use ====== 5.1 These test methods determine whether copper products will be resistant to embrittlement when exposed to elevated temperatures in a reducing atmosphere. 5.1.1 It is assumed that all who use these test methods will be trained personnel capable of performing these procedures skillfully and safely. It is expected that work will be performed in a properly equipped facility.