1.1 本规范 2. 铝合金盖( 注1 )模锻件、手工锻件和轧制环锻件，如所示 表2 , 表3 和 表4 在节中 10 对于F和01回火的可热处理合金锻件。本规范范围内锻件的最大厚度如表所示。 注1: 在本规范中，术语的使用 合金 一般来说，包括铝以及铝合金。 注2: 对于以轧制、冷加工棒材、挤压棒材或棒材形式供应的锻件，请参阅规范 B211/B211M . 1.2 合金和回火名称符合ANSI H35。 1/H35.1（M）。等效的统一编号系统合金名称为 表1 例如，根据惯例，A91100前面带有A9，用于铝1100 E527 . 1.3 有关本规范中包含新铝和铝合金的验收标准，请参阅 附件A2 . 1.4 本规范是本规范的英寸磅配套规范 B247米 ; 因此，规范中没有给出SI等效值。 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 aluminum-alloy ( Note 1 ) die forgings, hand forgings, and rolled ring forgings as shown in Table 2 , Table 3 , and Table 4 in Section 10 for heat-treatable alloy forgings supplied in the F and 01 tempers. The maximum thicknesses for forgings within the scope of this specification are as indicated in those tables. Note 1: Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum alloy. Note 2: For forging stock supplied as rolled, cold-finished bar, extruded bar, or rod see Specification B211/B211M . 1.2 Alloy and temper designations are in accordance with ANSI H35.1/H35.1(M). The equivalent Unified Numbering System alloy designations are those of Table 1 preceded by A9, for example, A91100 for aluminum 1100 in accordance with Practice E527 . 1.3 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2 . 1.4 This specification is the inch-pound companion to Specification B247M ; therefore, no SI equivalents are presented in the specification. 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.