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ASTM B928/B928M-09

Historical Revision

Standard Specification for High Magnesium Aluminum-Alloy Products for Marine Service and Similar Environments

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1.1 This specification covers high magnesium (Note 1) marine application aluminum-alloy (Note 2), in those alloy-tempers shown in Table 1 [Table 2] and Table 3 [Table 4], for flat sheet, coiled sheet, and plate, in the mill finish that are intended for marine and similar environments:

Note 1—The term high magnesium in the general sense includes those alloys containing 3 % or more nominal magnesium.

Note 2—Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum alloy.

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 Table 5 preceded by A9, for example, A95083 for 5083 in accordance with Practice E527.

1.3 The values stated in either SI units (Table 2 and Table 4) or inch-pound units (Table 1 and Table 3) 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 each other. Combining values from the two systems may result in non-conformance with the standard.

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

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


This specification covers high magnesium marine application aluminum-alloy in those alloy tempers for flat sheet, coiled sheet, and plate, in the mill finish that are intended for marine and similar environments. An inspection lot shall consist of an identifiable quantity of material of the same mill form, alloy, temper, cast or melt lot, and thickness, subjected to inspection at one time. The material shall be supplied in the mill finish and shall be uniform as defined by the requirements of this specification and shall be commercially sound. Each coil, sheet and plate shall be examined to determine conformance to this specification with respect to general quality and identification marking. One sample shall be taken from each end of each parent coil, or parent plate. Alloy-tempers are manufactured and corrosion tested for intended use in marine hull construction or in marine applications where frequent or constant direct contact with seawater is expected. The specimen shall be capable of exhibiting resistance to intergranular corrosion as indicated by an acceptable mass-loss when tested and shall also be capable of exhibiting no evidence of exfoliation or corrosion. Under metallographic examination, the microstructure of a sample from each production lot shall be compared to that of the producer-established reference photomicrograph of acceptable material, in the same thickness range. Each shipping container shall be marked with the purchase order number, material size, specification number, alloy and temper, gross and net weights, and the producer's name or trademark.


SDO ASTM: ASTM International
Document Number B928
Publication Date Nov. 1, 2009
Language en - English
Page Count 12
Revision Level 09
Supercedes
Committee B07.03
Publish Date Document Id Type View
Oct. 1, 2023 B0928_B0928M-15R23E01 Revision
June 15, 2015 B0928_B0928M-15 Revision
Oct. 1, 2014 B0928_B0928M-14A Revision
May 1, 2014 B0928_B0928M-14 Revision
Oct. 1, 2013 B0928_B0928M-13 Revision
Nov. 1, 2009 B0928_B0928M-09 Revision
May 15, 2007 B0928_B0928M-07 Revision
Dec. 1, 2004 B0928_B0928M-04A Revision
Oct. 1, 2023 B0928_B0928M-15R23 Reaffirmation