1.1 本规范涵盖了在可电镀塑料基底上的几种等级和类型的电沉积铜+镍+铬涂层的要求，其中外观、耐久性和耐热循环性对使用性能至关重要。提供了五种等级的涂层，以与预期每种涂层都能提供令人满意性能的使用条件相关联。 1.2 本规范涵盖了在通过自催化沉积施加金属膜之后或在自催化沉积之后施加任何冲击涂层之后施加的涂层的要求。 1.3 以下警告仅适用于第节的试验方法部分 6. , 附件A1 和 附录X2 , 附录X3 和 附录X4 本规范的。 本标准并不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。 1.4 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。

1.1 This specification covers the requirements for several grades and types of electrodeposited copper plus nickel plus chromium coatings on plateable plastic substrates where appearance, durability and resistance to thermal cycling are important to service performance. Five grades of coatings are provided to correlate with the service conditions under which each is expected to provide satisfactory performance. 1.2 This specification covers the requirements for coatings applied subsequent to the application of metal film by autocatalytic deposition or subsequent to the application of any strike coatings after autocatalytic deposition. 1.3 The following caveat pertains only to the test method portions of Section 6 , Annex A1 , and Appendix X2 , Appendix X3 , and Appendix X4 of 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.