1.1 本规范涵盖了通过电解工艺应用于热轧和冷轧钢板的锌镍合金涂层。涂层表面光滑、无毛刺。本规范中涵盖的锌镍涂层板在一系列涂层质量中生产，以提供与所需预期使用寿命兼容的涂层。涂层质量各不相同，从通常涂漆以提供良好服务的非常薄的涂层到在裸露（未涂漆）条件下提供良好耐腐蚀性的相对较重的涂层。成分范围为9到16 % 镍，按重量计，其余为锌。 1.2 产品应涂覆在一个或两个表面上，两个表面上的涂层质量相等或不同。在每个表面上涂有相同涂层质量的板材在每个表面上具有相似的防腐等级。然而，通常情况下，一个表面需要比另一个表面更高级别的防腐。在这些情况下，一个表面的涂层质量应比另一个表面重。与未涂漆表面相比，指定涂漆的任何表面都将提供额外的防腐保护。 1.3 该涂层工艺基本上不会影响母材的机械性能，允许在任何等级的热处理上使用- 或冷轧钢板。涂层钢板可用作商品钢（CS）、拉拔钢（DS）、深冲钢（DDS）、超深冲钢（EDDS）、结构钢（SS）、高强度低合金钢（HSLAS）、可成形性改善的高强度低合金钢（HSLAS-F）、固溶硬化钢（SHS）或烘烤硬化钢（BHS）。 1.4 以国际单位制表示的数值应视为标准。 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 zinc-nickel alloy coatings applied by the electrolytic process to hot-rolled and cold-rolled steel sheet. The coating has a smooth, spangle-free surface. The zinc-nickel-coated sheet covered in this specification is produced in a range of coating masses to provide coatings that are compatible with the anticipated service life required. The coating mass varies, from very thin coatings that are usually painted to provide good service, to relatively heavy masses that provide good corrosion resistance in the bare (unpainted) condition. The composition range is from 9 to 16 % nickel, by weight, with the balance being zinc. 1.2 The product shall be coated on one or both surfaces with equal or differential coating masses on the two surfaces. Sheet coated with equal coating masses on each surface has similar levels of corrosion protection on each surface. Often, however, a higher level of corrosion protection is required on one surface than is required on the other. In these situations, one surface shall be specified with a heavier coating mass than the other. Either surface, when specified to be painted, will provide additional corrosion protection as compared to an unpainted surface. 1.3 This coating process has essentially no effect on the base metal mechanical properties, and use is permitted on any grade of hot- or cold-rolled steel sheet. The coated sheet is available as Commercial Steel (CS), Drawing Steel (DS), Deep Drawing Steel (DDS), Extra-Deep Drawing Steel (EDDS), Structural Steel (SS), High-Strength Low-Alloy Steel (HSLAS), High-Strength Low-Alloy Steel with Improved Formability (HSLAS-F), Solution-Hardened Steel (SHS), or Bake-Hardenable Steel (BHS). 1.4 The values stated in SI units are to be regarded as the standard. 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.