1.1 本规范 2. 涵盖锅炉和压力容器结构中使用的不锈钢热加工和冷加工棒材，包括圆形、方形和六边形，以及热轧或挤压成型的型材，如角钢、三通和槽钢。 2. 注1: 标准涵盖高镍、铬、奥氏体腐蚀和耐热合金材料。这些标准由ASTM小组委员会B02.07管辖，可在 ASTM标准年鉴 ，第02.04卷。 1.2 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可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1. 3. 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。 1.4 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 hot- and cold-finished bars of stainless steel, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles, tees, and channels for use in boiler and pressure vessel construction. 2 Note 1: There are standards covering high nickel, chromium, austenitic corrosion, and heat-resisting alloy materials. These standards are under the jurisdiction of ASTM Subcommittee B02.07 and may be found in Annual Book of ASTM Standards , Vol 02.04. 1.2 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 non-conformance with the standard. 1.3 Unless the order specifies the applicable “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.