1.1 本规范涵盖通过粉末冶金工艺由铜钨制成的电接触部件。 1.2 本说明书涵盖了触点用户通常指定的铜钨系统内的成分。 1.3 以英寸-磅单位表示的值应被视为标准值。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任熟悉所有危害，包括制造商提供的本产品/材料的适当数据安全表（SDS）中确定的危害，建立适当的安全、健康和环境实践，并在使用前确定法规限制的适用性。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 electrical contact components made from copper tungsten by powder metallurgical procedures. 1.2 This specification covers compositions within the copper tungsten system normally specified by users of contacts. 1.3 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this 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 become familiar with all hazards including those identified in the appropriate Data Safety Sheet (SDS) for this product/material as provided by the manufacturer, 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.