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ASTM B547/B547M 2010 Edition, May 1, 2010
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Standard Specification for Aluminum and Aluminum-Alloy Formed and Arc-Welded Round Tube
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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 alloy in 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 B209 or B209M.

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.

For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.

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.

The SI units are shown either in brackets or in separate tables.

*A Summary of Changes section appears at the end of this standard.