1.1 本规范涵盖了通过粉末冶金程序由银镍制成的电接触部件。 1.2 本规范涵盖了通常由电触点用户指定的银镍系统内的成分。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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熟悉所有危险，包括制造商提供的本产品/材料的适当安全数据表（SDS）中确定的危险，建立适当的安全、健康和环境实践，并在使用前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====== 9.1 这些材料的专有制造方法因供应商而异，这些方法会影响电弧侵蚀、接触电阻和在役焊接倾向等性能。由于设备中触点的性能取决于触点本身以外的许多因素（打开速度、关闭速度、触点压力、触点反弹、环境变化、装配技术和变化等）。 )，此规范无法确保应用程序中的性能控制。作为初始样品鉴定的一部分，建议用户对适用于材料使用的所有装置的材料进行功能测试。本规范为触点制造商和触点用户提供了一种方法，以就特定用途的材料细节达成协议，并合理保证未来批次的性能和微观结构与提供的初始测试或样品触点相似。

1.1 This specification covers electrical contact components made from silver nickel by powder metallurgical procedures. 1.2 This specification covers compositions within the silver-nickel system normally specified by users of electrical contacts. 1.3 The values stated in SI 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 Safety Data 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. ====== Significance And Use ====== 9.1 Proprietary methods for manufacture of these materials vary significantly among suppliers and these methods influence such properties as arc erosion, contact resistance, and the tendency to weld in service. Since the performance of contacts in a device depends on numerous factors outside the contact itself (opening speed, closing speed, contact pressure, contact bounce, environmental variations, assembly technique and variations, etc.), this specification cannot ensure performance control in the application. As part of the qualification on initial samples, it is recommended that the user functionally test the materials electrically for all devices applicable to the material's use. This specification provides a means for the contact manufacturer and contact user to reach agreement on the details of material to be supplied for a specific use and reasonable assurance that future lots will be similar in properties and microstructure to the initial test or sample contact supplied.