1.1 本规范涵盖镀锌金属薄板-5 % 铝合金，通过热浸工艺，成卷和切割长度。Zn-5Al合金涂层还含有除锌和铝之外的少量元素，这些元素旨在改善涂层产品的加工和特性。 1.2 涂层有两种类型:锌-5 % 铝混合稀土合金（I型）和锌-5 % 铝-0.1 % 镁合金（II型）和两种涂层结构（类别）。涂层片材有多种涂层名称（涂层重量[质量]），如 表1 。 1.3 该产品适用于需要耐腐蚀性、成型性和可涂装性的应用。 1.4 该产品有四个通用类别中的多个名称、等级和类别，旨在兼容不同的应用要求。 1.4.1 具有强制性化学要求和典型机械性能的钢。 1.4.2 具有强制性化学要求和强制性机械性能的钢。 1.4.3 具有强制性化学要求和通过固体实现的强制性机械性能的钢- 溶液或烘烤硬化。 1.5 根据本规范提供的产品应符合最新版规范的适用要求 A924/A924M ，除非本文另有规定。 1.6 本规范的文本引用了提供解释性材料的注释和脚注。这些注释和脚注，不包括表格和数字，不应被视为本规范的要求。 1.7 单位-- 本规范适用于英寸磅单位（A875）或公制单位（SI）【A875M】的订单。英寸磅和国际单位制的数值不一定相等。 在正文中，国际单位制显示在括号中。每个系统应独立使用。 1.8 除非订单规定了“M”规格名称（国际单位制），否则材料应采用英寸磅单位。 1.9 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。 1.10 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 steel sheet, metallic-coated with zinc-5 % aluminum alloy via the hot dip process, in coils and cut lengths. The Zn-5Al alloy coating also contains small amounts of elements other than zinc and aluminum that are intended to improve processing and the characteristics of the coated product. 1.2 The coating is produced as two types: zinc-5 % aluminum-mischmetal alloy (Type I) and zinc-5 % aluminum-0.1 % magnesium alloy (Type II), and in two coating structures (classes). The coated sheet is produced in several coating designations (coating weight [mass]) as shown in Table 1 . 1.3 The product is intended for applications requiring corrosion resistance, formability, and paintability. 1.4 The product is available in a number of designations, grades, and classes in four general categories that are designed to be compatible with different application requirements. 1.4.1 Steels with mandatory chemical requirements and typical mechanical properties. 1.4.2 Steels with mandatory chemical requirements and mandatory mechanical properties. 1.4.3 Steels with mandatory chemical requirements and mandatory mechanical properties that are achieved through solid-solution or bake hardening. 1.5 The product furnished under this specification shall conform to the applicable requirements of the latest issue of Specification A924/A924M , unless otherwise provided herein. 1.6 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes, excluding tables and figures, shall not be considered as requirements of this specification. 1.7 Units— This specification is applicable to orders in either inch-pound units (as A875) or metric (SI) units [as A875M]. Values in inch-pound and SI units are not necessarily equivalent. Within the text, the SI units are shown in brackets. Each system shall be used independently of the other. 1.8 Unless the order specifies the “M” specification designation (SI units), the material shall be furnished to inch-pound units. 1.9 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. 1.10 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.