1.1 本规范涵盖镁合金挤压棒材、棒材、型材、管材和线材，其成分如下所示 表1 . 1.2 以英寸-磅或国际单位制表示的数值应单独视为标准。国际单位制显示在括号内或单独的表格或列中。每个系统中规定的值不是精确的等价物；因此，每个系统必须相互独立使用。合并两个系统的值可能会导致不符合规范。 1.3 除非订单规定了“M”规格名称，否则材料应以英寸-磅为单位提供。 1.4 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 magnesium-alloy extruded bars, rods, profiles, tubes, and wire of the composition given in Table 1 . 1.2 The values stated in either inch-pound or SI units are to be regarded separately as standards. The SI units are shown in brackets or in separate tables or columns. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification. 1.3 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units. 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.