1.1 本规范涵盖压缩机和涡轮机叶片、叶片和机翼应用的不锈钢锻件。 1.2 本规范以英寸-磅单位和国际单位制表示；但是，除非采购订单或合同规定了适用的 M 名称（国际单位制），英寸-磅单位应适用。以英寸-磅单位或国际单位表示的数值应单独视为标准值。在文本中，国际单位显示在括号中。 每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.3 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 stainless steel forgings for compressor and turbine bucket, blade, and airfoil applications. 1.2 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 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.