1.1 本规范涵盖了在钢铁基金属上真空沉积镉涂层的要求。该涂层对热处理至46HRC及以上或极限抗拉强度大于1500 MPa的黑色金属特别有益，其中防腐蚀和外观保护很重要（见 附录X1 ). 1.2 真空沉积产品通常不存在氢脆，这是使用电镀工艺进行沉积时的一种危险。真空沉积可以处理大型高强度零件，这些零件无法方便地在旋转筒中进行机械电镀。 1.3 涂层厚度不超过12μm( 3.1 )处于沉积状态或具有补充饰面( 3.2 ). 1.4 以下预防性警告仅适用于试验方法部分第节 9 ，本规范: 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。

1.1 This specification covers the requirements for a cadmium coating vacuum-deposited on iron and steel basis metals. The coating is especially beneficial to those ferrous metals, heat treated to 46HRC and higher or having an ultimate tensile strength greater than 1500 MPa, wherein protection against corrosion and appearance are important (see Appendix X1 ). 1.2 Vacuum-deposited production items are normally free of hydrogen embrittlement, a danger when using electroplating processes for deposition. Vacuum deposition can handle large high-strength parts that cannot be conveniently mechanically plated in the rotating barrels. 1.3 The coating is provided in various thicknesses up to and including 12 μm ( 3.1 ) either in the as-deposited condition or with a supplementary finish ( 3.2 ). 1.4 The following precautionary caveat pertains only to the test methods portion, Section 9 , of this specification: This standard does not purport to address all of the safety problems, 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.