Реферат

This specification covers aluminum and aluminum-alloy flat sheet, coiled sheet, and plate in particular alloys and tempers described. Plate in all alloys and sheet in heat-treatable alloys shall have a mill finish. Sheet in nonheat-treatable alloys shall have any one of the following finishes: mill finish, one-side bright mill finish, standard one-side bright finish, and standard two-sides bright finish. The sheet and plate shall conform to the specified requirements for tensile properties. The heat treatment capability, reheat-treatment capability, bend properties, stress-corrosion resistance, and exfoliation-corrosion resistance of the sheet and plate shall be determined through specified processes.

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1.1 This specification covers aluminum and aluminum-alloy flat sheet, coiled sheet, and plate in the alloys (Note 1) and tempers shown in Tables 2 and 3, in the following finishes:

1.1.1 Plate in all alloys and sheet in heat-treatable alloys: mill finish.

1.1.2 Sheet in nonheat-treatable alloys: mill finish, one-side bright mill finish, standard one-side bright finish, and standard two-sides bright finish. Note 1 - Throughout this specification, use of the term alloyin the general sense includes aluminum as well as aluminum alloy.

Note 2 - See Specification B 632/B 632M for tread plate.

Note 3 - See Specification B 928/B 928M for 5xxx-H116 and 5xxx-H321 aluminum alloys containing 3 % or more nominal magnesium and intended for marine service and similar environments. Other alloy-temper products listed in this specification, which do not require the additional corrosion testing/capability called out in ASTM B 928/B928M, may be suitable for marine and similar environment applications.

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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 preceded by A9, for example, A91100 for aluminum 1100 in accordance with Practice E 527.

1.3 A complete metric companion to Specification B 209 has been developed-Specification B 209M; therefore, no metric equivalents are presented in this specification.

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