1.1 本规范涵盖热锻合金钢棒。棒材应用包括锻造、热处理、冷拔、机械加工和许多结构部件（ 附注1 ). 附注1: 在实践中包含了钢筋选择指南 A400 . 1.2 酒吧须按以下所指明的等级提供 表1 规格中涵盖了可用钢筋的截面和尺寸 A29/A29M 热锻合金钢棒材以切割长度和卷材生产；应咨询制造商，了解根据化学成分生产的卷材的截面和尺寸。 1.3 一些应用可能需要优异的表面质量，或特殊的化学限制、冶金特性、热处理或表面光洁度，买方可以通过指定一个或多个可用的补充要求来获得这些。1.4 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》中确立的国际公认的标准化原则制定的。

1.1 This specification covers hot-wrought alloy steel bars. Bar applications include forging, heat treating, cold drawing, machining, and many structural components ( Note 1 ). Note 1: A guide for the selection of steel bars is contained in Practice A400 . 1.2 The bars shall be furnished in the grades specified in Table 1 . Sections and sizes of bar steel available are covered in Specification A29/A29M . Hot-wrought alloy steel bars are produced in cut lengths and coils; the manufacturer should be consulted regarding sections and sizes available in coils, produced to a chemical composition. 1.3 Some applications may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment, or surface finishes which the purchaser may obtain by designating one or more of the available Supplementary Requirements. 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.