Standard Specification for Aluminum and Aluminum-Alloy Formed and Arc-Welded Round Tube
This specification covers aluminum and aluminum-alloy formed and arc-welded round tube, made from formed sheet or plate, butt welded by gas-tungsten or gas-metal arc-welding methods with or without the use of filler metal. The tube shall be made by roll forming (or other suitable forming) sheet or plate into a circular contour with the longitudinal edges butted together for welding. The sheet or plate shall be roll-formed so that the edges are butted together in a helical pattern around the circumference of the tube. The edges shall be welded together by a gas-shielded-arc process. Tensile strength, yield strength, and elongation of the specimens shall be determined by tension test. Specimens may be subjected to a pressure test and a radiographic examination.
1.1 This specification covers aluminum and aluminum-alloy (Note 1) formed and arc-welded round tube in diameters 9 to 60 in. [230 to 1520 mm], made from formed sheet or plate, butt welded by gas-tungsten or gas-metal arc-welding methods with or without the use of filler metal.
Note 1—Throughout this specification use of the term alloyin the general sense includes aluminum as well as aluminum alloy.
Note 2—The requirements for the sheet and plate used are the same as in Specifications B 209 or B 209M.
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 preceded by A9, for example, A91100 for aluminum 1100 in accordance with Practice E 527.
1.3 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.
1.4 The values stated in either inch-pound or SI units are to be regarded separately as standards. The SI units are shown either in brackets or in separate tables. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems will result in nonconformance with the specification.
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