1.1 本规范 2. 涵盖锅炉、压力容器、高温部件和相关设备的铁素体钢锻件。 1.2 由规范中列出的钢种制成的锻件 A335/A335米 也可以根据本规范订购。规范的化学、拉伸、热处理和标记要求 A335/A335米 应适用，但锻件应符合表中的化学要求 规范1和2 A335/A335米 仅关于热分析。在产品分析中，他们可能会在 表1 本规范。 1.3 提供了补充要求S1至S10，以便在需要额外测试或检查时使用。只有当买方在订单中单独规定时，这些规定才适用。 1.4 除非订单规定了适用的“M”规格名称，否则材料应按英寸磅单位提供。 1.5 规格 A336/a36m 以前包括奥氏体钢锻件，现在可在规范中找到 A965/A965M 。 1.6 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得组合。 1.7 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 2 covers ferritic steel forgings for boilers, pressure vessels, high-temperature parts, and associated equipment. 1.2 Forgings made of steel grades listed in Specification A335/A335M may also be ordered under this specification. The chemical, tensile, heat treatment, and marking requirements of Specification A335/A335M shall apply, except the forging shall conform to the chemical requirements of Tables 1 and 2 of Specification A335/A335M only with respect to heat analysis. On product analysis they may deviate from these limits to the extent permitted in Table 1 of this specification. 1.3 Supplementary Requirements S1 to S10 are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order. 1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units. 1.5 Specification A336/A336M formerly included austenitic steel forgings, which are now found in Specification A965/A965M . 1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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. 1.7 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.