ASTM B928/B928M-04a
(Specification)Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate for Marine Service
Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate for Marine Service
SCOPE
1.1 This specification covers high magnesium () marine application aluminum-alloy (Note 1), in those alloy-tempers shown in [], for flat sheet, coiled sheet, and plate, in the mill finish that are intended for marine and similar environments:Note 2
The term high magnesium in the general sense includes those alloys containing 3 % or more nominal magnesium.Note 0
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 [H35.1M]. The equivalent Unified Numbering System alloy designations are those of preceded by A9, for example, A95083 for 5083 in accordance with Practice E 527.
1.3 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 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 .
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.
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Designation: B 928/B 928M – 04a
Standard Specification for
High Magnesium Aluminum-Alloy Sheet and Plate for Marine
1
Service and Similar Environments
This standard is issued under the fixed designation B 928/B 928M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope* B 557 Test Methods of Tension Testing Wrought and Cast
Aluminum- and Magnesium-Alloy Products
1.1 This specification covers high magnesium (Note 1)
B 557M TestMethodsofTensionTestingWroughtandCast
marine application aluminum-alloy (Note 2), in those alloy-
Aluminum- and Magnesium-Alloy Products [Metric]
tempers shown inTable 2 [Table 3], for flat sheet, coiled sheet,
B 660 Practices for Packaging/Packing of Aluminum and
and plate, in the mill finish that are intended for marine and
Magnesium Products
similar environments:
B 666/B 666M Practice for Identification Marking of Alu-
NOTE 1—The term high magnesium in the general sense includes those
minum and Magnesium Products
alloys containing 3 % or more nominal magnesium.
B 881 TerminologyRelatedtoAluminum-andMagnesium-
NOTE 2—Throughout this specification use of the term alloy in the
Alloy Products
general sense includes aluminum as well as aluminum alloy.
E3 Practice for Preparation of Metallographic Specimens
1.2 Alloy and temper designations are in accordance with
E 29 Practice for Using Significant Digits in Test Data to
ANSI H35.1 [H35.1M]. The equivalent Unified Numbering
Determine Conformance with Specifications
SystemalloydesignationsarethoseofTable1precededbyA9,
E34 Test Methods for ChemicalAnalysis ofAluminum and
for example, A95083 for 5083 in accordance with Practice
Aluminum-Base Alloys
E 527.
E55 PracticeforSamplingWroughtNonferrousMetalsand
1.3 The values stated in either SI units or inch-pound units
Alloys for Determination of Chemical Composition
are to be regarded separately as standard. The values stated in
E 407 Test Methods for Microetching Metals and Alloys
each system may not be exact equivalents; therefore each
E 527 Practice for Numbering Metals and Alloys (UNS)
system shall be used independently of each other. Combining
E 607 Test Method for Atomic Emission Spectrometric
values from the two systems may result in non-conformance
Analysis Aluminum Alloys by the Point-to-Plane Tech-
with the standard.
nique, Nitrogen Atmosphere
1.4 For acceptance criteria for inclusion of new aluminum
E 716 Practices for Sampling Aluminum and Aluminum
and aluminum alloys in this specification, see Annex A2.
Alloys for Spectrochemical Analysis
1.5 This standard does not purport to address all of the
E 1251 Test Method for Optical Emission Spectrometric
safety concerns, if any, associated with its use. It is the
Analysis ofAluminum andAluminumAlloys by theArgon
responsibility of the user of this standard to establish appro-
Atmosphere, Point-to-Plane, Unipolar Self-Initiating Ca-
priate safety and health practices and determine the applica-
pacitor Discharge
bility of regulatory limitations prior to use.
G66 Test Method for Visual Assessment of Exfoliation
Corrosion Susceptibility of 5xxx Series Aluminum Alloys
2. Referenced Documents
(ASSET Test)
2.1 The following documents of the issue in effect on the
G67 Test Method for Determining the Susceptibility to
date of material purchase, unless otherwise noted, form a part
Intergranular Corrosion of 5xxx Series Aluminum Alloys
of this specification to the extent referenced herein:
by Mass Loss After Exposure to Nitric Acid (NAMLT
2
2.2 ASTM Standards:
Test)
3
2.3 ANSI Standards:
H35.1 Alloy and Temper Designation Systems for Alumi-
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
num
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on
Aluminum-Alloy Wrought Products.
H35.1(M) Alloy and Temper Designation Systems for Alu-
Current edition approved Dec. 1, 2004. Published December 2004. Originally
minum
approved in 2003. Last previous edition approved in 2004 as B 928 – 04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contactASTM Customer Service at service@astm.org. ForAnnual Book ofASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
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B 928/B 928M – 04a
A,B,C
TABLE 1
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