ASTM B928-04

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Designation: B 928 – 04
Standard Specification for
High Magnesium Aluminum-Alloy Sheet and Plate for Marine
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Service
This standard is issued under the fixed designation B 928; 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 660 Practices for Packaging/Packing of Aluminum and
Magnesium Products
1.1 This specification covers high magnesium (Note 1)
B 666/B 666M Practice for Identification Marking of Alu-
marine application aluminum-alloy (Note 2), in those alloy-
minum and Magnesium Products
tempers shown in Table 2 [Table 3], for flat sheet, coiled sheet,
B 881 Terminology Related toAluminum- and Magnesium-
and plate, in the mill finish:
Alloy Products
NOTE 1—The term high magnesium in the general sense includes those
E 3 Practice for Preparation of Metallographic Specimens
alloys containing 3 % or more nominal magnesium.
E 29 Practice for Using Significant Digits in Test Data to
NOTE 2—Throughout this specification use of the term alloy in the
Determine Conformance with Specifications
general sense includes aluminum as well as aluminum alloy.
E 34 Test Methods for ChemicalAnalysis ofAluminum and
1.2 Alloy and temper designations are in accordance with
Aluminum-Base Alloys
ANSI H35.1 [H35.1M]. The equivalent Unified Numbering
E 55 PracticeforSamplingWroughtNonferrousMetalsand
Systemalloydesignations are those ofTable 1 precededbyA9,
Alloys for Determination of Chemical Composition
for example, A95083 for 5083 in accordance with Practice
E 407 Test Methods for Microetching Metals and Alloys
E 527.
E 527 Practice for Numbering Metals and Alloys (UNS)
1.3 The values stated in either SI units or inch-pound units
E 607 Test Method for Atomic Emission Spectrometric
are to be regarded separately as standard. The values stated in
Analysis Aluminum Alloys by the Point-to-Plane Tech-
each system may not be exact equivalents; therefore each
nique, Nitrogen Atmosphere
system shall be used independently of each other. Combining
E 716 Practices for Sampling Aluminum and Aluminum
values from the two systems may result in non-conformance
Alloys for Spectrochemical Analysis
with the standard.
E 1251 Test Method for Optical Emission Spectrometric
1.4 For acceptance criteria for inclusion of new aluminum
Analysis ofAluminum andAluminumAlloys by theArgon
and aluminum alloys in this specification, see Annex A2.
Atmosphere, Point-to-Plane, Unipolar Self-Initiating Ca-
pacitor Discharge
2. Referenced Documents
G 66 Test Method for Visual Assessment of Exfoliation
2.1 The following documents of the issue in effect on the
Corrosion Susceptibility of 5xxx Series Aluminum Alloys
date of material purchase, unless otherwise noted, form a part
(ASSET Test)
of this specification to the extent referenced herein:
G 67 Test Method for Determining the Susceptibility to
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2.2 ASTM Standards:
Intergranular Corrosion of 5xxx Series Aluminum Alloys
B 557 Test Methods of Tension Testing Wrought and Cast
by Mass Loss After Exposure to Nitric Acid (NAMLT
Aluminum- and Magnesium-Alloy Products
Test)
B 557M TestMethodsofTensionTestingWroughtandCast
2.3 ANSI Standards:
Aluminum- and Magnesium-Alloy Products [Metric]
H35.1 Alloy and Temper Designation Systems for Alumi-
3
num
1 H35.1(M) Alloy and Temper Designation Systems for Alu-
This specification is under the jurisdiction of ASTM Committee B07 on Light
3
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on minum
Aluminum-Alloy Wrought Products.
H35.2 Dimensional Tolerances for Aluminum Mill Prod-
Current edition approved Feb. 1, 2004. Published February 2004. Originally
3
ucts
approved in 2003. Last previous edition approved in 2003 as B 928 – 03.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contactASTM Customer Service at service@astm.org. ForAnnual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available in the Related Materials section (gray pages) of the Annual Book of
the ASTM website. ASTM Standards, Vol 02.02.
*A Summary of Changes section appears at the end of this standard.
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B928–04
A,B,C
TABLE 1 Chemical Composition Limits
D
Other Elements
Alloy Silicon Iron Copper Manganese Magnesium Chromium Zinc Titanium Aluminum
E
Each Total
F
5059 0.45 0.50 0.25 0.6 to 1.2 5.0 to 6.0 0.25 0.4 to0.9 0.20 0.05 0.15 remainder
5083 0.40 0.40 0.10 0.40 to 1.0 4.0 to 4.9 0.05 to 0.25 0.25 0.15 0.05 0.15 remainder
5086 0.40 0.5
...