1.1 组成-- 本规范涵盖了含有70至95质量%钯金属的电沉积钯镍涂层的要求。还覆盖了由钯镍和薄金过镀层组成的复合涂层，用于涉及电接触的应用。 1.2 属性-- 钯是铂族金属中最轻、最不贵的一种。钯镍是钯和镍的固溶体合金。电镀钯-镍合金的密度在10到11.5之间，其基本上小于电镀金（17.0到19.3），并且与电镀纯钯（10。 5至11.8）。这产生了每单位质量更大的涂层体积或厚度，并因此节省了一些金属重量。电沉积钯镍的硬度范围与电镀贵金属及其合金相比是有利的 ( 1. ， 2. ) 。 2. 注1: 电镀沉积物通常具有比其锻造金属沉积物更低的密度。 近似硬度（HK 25 ) 金 50–250 钯 75–600 白金 150–550 钯镍 300–650 铑 750–1100 钌 600–1300 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 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。 1.5 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 Composition— This specification covers requirements for electrodeposited palladium-nickel coatings containing between 70 and 95 mass % of palladium metal. Composite coatings consisting of palladium-nickel and a thin gold overplate for applications involving electrical contacts are also covered. 1.2 Properties— Palladium is the lightest and least noble of the platinum group metals. Palladium-nickel is a solid solution alloy of palladium and nickel. Electroplated palladium-nickel alloys have a density between 10 and 11.5, which is substantially less than electroplated gold (17.0 to 19.3) and comparable to electroplated pure palladium (10.5 to 11.8). This yields a greater volume or thickness of coating per unit mass and, consequently, some saving of metal weight. The hardness range of electrodeposited palladium-nickel compares favorably with electroplated noble metals and their alloys ( 1 , 2 ) . 2 Note 1: Electroplated deposits generally have a lower density than their wrought metal counterparts. Approximate Hardness (HK 25 ) Gold 50–250 Palladium 75–600 Platinum 150–550 Palladium-Nickel 300–650 Rhodium 750–1100 Ruthenium 600–1300 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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.