1.1 本规范涵盖化学分析类似于标准锻造等级的碳钢和低合金钢铸件。 1.2 涵盖多个等级，并按化学成分指定，如所示 表1 . 1.3 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.3.1 在文本中，国际单位显示在括号中。 1.3.2 英寸磅单位适用于按规范订购的材料 A915型 和国际单位制，用于订购符合规范的材料 A915M . 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 carbon and low-alloy steel castings having chemical analyses similar to those of the standard wrought grades. 1.2 Several grades are covered and are designated by chemical composition shown in Table 1 . 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3.1 Within the text, the SI units are shown in brackets. 1.3.2 Inch-pound units are applicable for material ordered to Specification A915 , and SI units for material ordered to Specification A915M . 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.