ASTM B 221:2021

1.1 This specification 2 covers aluminum and aluminum-alloy extruded bars, rods, wire, profiles, and tubes in the aluminum alloys ( Note 1 ) and tempers shown in Table 2. Note 1: Throughout this specification, the use of the term alloy in the general sense includes aluminum as well as aluminum alloy. Note 2: For rolled or cold-finished bar and rod refer to Specification B211/B211M , for drawn seamless tube used in pressure applications, Specification B210/B210M , for structural pipe and tube, Specification B429/B429M , and for seamless pipe and tube used in pressure applications, Specification B241/B241M . Note 3: Pipe and tube products listed in this specification are intended for general purpose applications. This specification may not address the manufacturing processes, integrity testing, and verification required for fluid-carrying applications involving pressure. See Specifications B210/B210M or B241/B241M , or both as appropriate, for seamless pipe and tube used in fluid-carrying applications involving pressure. See Specification B234 , as appropriate, for use in surface condensers, evaporators, and heat exchangers. 1.2 Alloy and temper designations are in accordance with ANSI H35.1/H35.1M. 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 A complete metric companion to Specification B221 has been developed-Specification B221M ; therefore, no metric equivalents are presented in this 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.

77.150.10