1.1 本规范 2. 涵盖一组通用要求，除非单独规范中另有规定，否则这些要求应适用于以下ASTM规范下承压零件的钢铸件: 规范标题 ASTM名称 碳钢铸件，适用于熔焊， A216/A216M 用于高温环境 钢铸件，马氏体不锈钢和合金，用于 A217/A217M 承压部件，适用于高- 温度服务 压力用奥氏体铸件- 包含 A351/A351M 部分 压力容器用铁素体和马氏体钢铸件- A352/A352M 含零件，适用于低温 服务 特殊热处理合金钢铸件，用于 A389/A389M 承压部件，适用于高- 温度服务 适用于压力应用的钢铸件 A487/A487M 铸铁、镍铬和镍铸件 A990/A990M 合金，专用于腐蚀环境中的承压零件 奥氏体-铁素体铸件（双相） A995/A995M 不锈钢，用于承压零件 1.2 本规范还涵盖了一组补充要求，这些补充要求可适用于上述规范，如其中所示。当需要额外的测试或检查时，提供这些测试或检查，并且仅当买方在订单中单独指定时才适用。 1.3 如果个别规范的要求与本通用规范的要求相冲突，应以前者为准。 1.4 以国际单位制或英寸表示的数值- 磅单位应单独视为标准单位。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。 1.5 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 2 covers a group of common requirements that, unless otherwise specified in an individual specification, shall apply to steel castings for pressure-containing parts under each of the following ASTM specifications: Title of Specification ASTM Designation Steel Castings, Carbon, Suitable for Fusion Welding, A216/A216M for High-Temperature Service Steel Castings, Martensitic Stainless and Alloy, for A217/A217M Pressure-Containing Parts, Suitable for High- Temperature Service Castings, Austenitic, for Pressure-Containing A351/A351M Parts Steel Castings, Ferritic and Martensitic, for Pressure- A352/A352M Containing Parts, Suitable for Low-Temperature Service Steel Castings, Alloy, Specially Heat-Treated, for A389/A389M Pressure-Containing Parts, Suitable for High- Temperature Service Steel Castings Suitable for Pressure Service A487/A487M Castings, Iron-Nickel-Chromium and Nickel A990/A990M Alloys, Specially Controlled for Pressure-Retaining Parts for Corrosive Service Castings, Austenitic-Ferritic (Duplex) A995/A995M Stainless Steel, for Pressure-Containing Parts 1.2 This specification also covers a group of supplementary requirements which may be applied to the above specifications as indicated therein. These are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order. 1.3 In case of conflict between the requirements of the individual specification and this general specification, the former shall prevail. 1.4 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. 1.5 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.