1、Designation: B928/B928M 09B928/B928M 13Standard Specification forHigh Magnesium Aluminum-Alloy Sheet and Plate for MarineService and Similar Environments1This standard is issued under the fixed designation B928/B928M; the number immediately following the designation indicates the yearof original ado
2、ption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers high magnesium (Note 1) marine application a
3、luminum-alloy (Note 21), in those alloy-tempersshown in Table 2 Table 2Table 3 Table 3 and Table 4 Table 4Table 5, Table 5, for flat sheet, coiled sheet, and plate, in themill finish condition that are intended for marine and similar environments:hull construction and other marine applications where
4、frequent or constant direct contact with seawater is expected and for similar environments (Note 2).NOTE 1The term high magnesium in the general sense includes those alloys containing 3 % or more nominal magnesium.NOTE 1Throughout this specification use of the term alloy in the general sense include
5、s aluminum as well as aluminum alloy.NOTE 2There are other aluminum alloy-temper products that may be suitable for use in marine and similar environments, but which may not requirethe corrosion resistance testing specified by B928/B928M. See Specification B209 or B209M for other aluminum sheet and p
6、late alloy-temper products.1.2 Alloy and temper designations are in accordance with ANSI H35.1/H35.1(M). The equivalent Unified Numbering Systemalloy designations are those of Table 1Table 1 preceded by A9, for example, A95083 for 5083 in accordance with Practice E527.1.3 The values stated in either
7、 SI units (TableTable 3 3 and Table 5) Table 5) or inch-pound units (TableTable 2 2 and Table4) Table 4) 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 th
8、e two systems may result in non-conformancewith 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 responsi
9、bilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on the date of material purchase, unless otherwise noted, form a par
10、t of thisspecification to the extent referenced herein:2.2 ASTM Standards:2B209 Specification for Aluminum and Aluminum-Alloy Sheet and PlateB209M Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Allo
11、y ProductsB557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)B660 Practices for Packaging/Packing of Aluminum and Magnesium ProductsB666/B666M Practice for Identification Marking of Aluminum and Magnesium ProductsB881 Terminology Relating to Alumin
12、um- and Magnesium-Alloy ProductsE3B985 Guide for Preparation of Metallographic SpecimensPractice for Sampling Aluminum Ingots, Billets, Castings andFinished or Semi-Finished Wrought Aluminum Products for Compositional AnalysisE29 Practice for Using Significant Digits in Test Data to Determine Confor
13、mance with SpecificationsE34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base AlloysE50 Practices forApparatus, Reagents, and Safety Considerations for ChemicalAnalysis of Metals, Ores, and Related Materials1 This specification is under the jurisdiction of ASTM Committee B07 on Light
14、 Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on AluminumAlloy Wrought Products.Current edition approved Nov. 1, 2009Oct. 1, 2013. Published December 2009October 2013. Originally approved in 2003. Last previous edition approved in 20072009as B928/B928M 07.B928/B928M 09.
15、DOI: 10.1520/B0928_B0928M-09.10.1520/B0928_B0928M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. ForAnnual Book ofASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This docum
16、ent is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as a
17、ppropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United
18、States1E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)E607 Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique NitrogenAtmosphere (Withdrawn 2011)3E716 Practices for Sampling and Sample Preparation of Aluminum and
19、 Aluminum Alloys for Determination of ChemicalComposition by Spectrochemical AnalysisE1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission SpectrometryG66 Test Method for Visual Assessment of Exfoliation Corrosion Susceptibility of 5XXX Series Aluminum Alloys (ASSET
20、Test)G67 Test Method for Determining the Susceptibility to Intergranular Corrosion of 5XXX SeriesAluminumAlloys by Mass LossAfter Exposure to Nitric Acid (NAMLT Test)2.3 ANSI Standards:4H35.1/H35.1(M) Alloy and Temper Designation Systems for AluminumH35.2 Dimensional Tolerances for Aluminum Mill Pro
21、ductsH35.2(M) Dimensional Tolerances for Aluminum Mill Products2.4 Other StandardsCEN EN 14242 Aluminum and aluminum alloys. Chemical analysis. Inductively coupled plasma optical emission spectralanalysis53. Terminology3.1 DefinitionsRefer to Terminology B881 for definitions of product terms used in
22、 this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 exfoliationcorrosion that proceeds laterally from the sites of initiation along planes parallel to the original rollingsurface, generally at grain boundaries, forming corrosion products that force metal away from the body o
23、f the material, giving riseto a layered appearance.3.2.2 high magnesium aluminum alloysin the general sense, includes those 5xxx alloys containing 3% or more nominalmagnesium.3.2.3 intergranular corrosioncorrosion that preferentially occurs at, or adjacent to, the grain boundaries of a metal or allo
24、y.3.2.4 lotan inspection lot shall consist of an identifiable quantity of material of the same mill form, alloy, temper, cast or meltlot, and thickness, subjected to inspection at one time.3.2.5 sensitizationthe development of a continuous or nearly continuous grain boundary precipitate in 5xxx allo
25、y-tempermaterial, that causes the material to be susceptible to intergranular forms of corrosion.3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600, Arlington, VA 22209, http:/www.aluminum.or
26、g.5 Available from European Committee for Standardization (CEN), Avenue Marnix 17, B-1000 Brussels, http:/www.cenorm.be.TABLE 1 Chemical Composition LimitsA,B,C,Hcolwidth=“0.61in“/COLSPECAlloy Silicon Iron Copper Manganese Magnesium Chromium Zinc Titanium Each TotalE5059 0.45 0.50 0.25 0.6 to 1.2 5.
27、0 to 6.0 0.25 0.45059 0.45 0.50 0.25 0.6 to 1.2 5.0 to 6.0 0.25 0.405083 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 remainder5086 0.40 0.50 0.10 0.20 to 0.7 3.5 to 4.5 0.05 to 0.25 0.255383 0.25 0.25 0.20 0.7 to 1.0 4.0 to 5.2 0.25 0.405383 0.25 0.25 0.20 0.7 to 1.0 4.0 t
28、o 5.2 0.25 0.405456 0.25 0.40 0.10 0.50 to 1.0 4.7 to 5.5 0.05 to 0.20 0.25 0.20 0.05 0.15 remainderA Limits are in weight percent maximum unless shown as a range or stated otherwise.B Analysis shall be made for the elements for which limits are shown in this table.C For purposes of determining conf
29、ormance to these limits, an observed value or a calculated value attained from analysis shall be rounded to the nearest unit in the lastright-hand place of figures used in expressing the specified limit, in accordance with the rounding-off method of Practice E29.D Others include listed elements for
30、which no specific limit is shown, as well as unlisted metallic elements, but doesnt include elements shown with composition limits inthe footnotes.The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not required and may not cover all meta
31、llicOthers elements. Should any analysis by the producer or the purchaser establish that an Others element exceeds the limit of Each or that the aggregate of several Otherselements exceeds the limit of Total, the material shall be considered nonconforming.E Other ElementsTotal shall be the sum of un
32、specified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.F 0.05 to 0.25 Zr.G 0.20 Zr max.HIn case of a discrepancy in the values listed in Table 1 with those listed in the International Alloy Designations and Chemical Composition Limits for Wrought Alumin
33、umand Wrought Aluminum Alloys (known as the “Teal Sheets”), the composition limits registered with the Aluminum Association and published in the “Teal Sheets” shall beconsidered the controlling composition. The “Teal Sheets” are available at http:/www.aluminum.org/tealsheets.B928/B928M 1323.2.6 stre
34、ss-corrosion crackinga cracking process that requires the simultaneous action of a corrodent, and sustained tensilestress. (This excludes corrosion-reduced sections, which fail by fast fracture. It also excludes intercrystalline or transcrystallinecorrosion which can disintegrate an alloy without ei
35、ther applied or residual stress.)4. Ordering Information4.1 Orders for material to this specification shall include the following information:4.1.1 This specification designation (which includes the number, the year, and the revision letter, if applicable),4.1.2 Quantity in pieces or pounds kilogram
36、s,4.1.3 Alloy (see 7.1 and Table 1),4.1.4 Temper (see 8.1 and Table 2 and Table 4 Table 3 and Table 5),4.1.5 For sheet, whether flat or coiled, and4.1.6 Dimensions (thickness, width, and length or coil size).4.2 Additionally, orders for material to this specification shall include the following info
37、rmation when required by thepurchaser:4.2.1 Whether inspection or witness of inspection and tests by the purchasers representative is required prior to materialshipment (see 11.112.1),4.2.2 Whether Practices B660 applies and, if so, the levels of preservation, packaging, and packing required (see 15
38、.316.3),4.2.3 Whether certification is required (see Section 1314), and.4.2.4 Whether G66 and G67 testing is the required lot release method for the H116 and H321 tempers (see 9.5),4.2.5 Whether the G66 and G67 test results are to be included in the certification (see Section 14), and4.2.6 Whether t
39、ensile testing should be in the longitudinal or long transverse direction (see 8.5).5. Responsibility for Quality Assurance5.1 Responsibility for Inspection and TestsUnless otherwise specified in the contract or purchase order, the producer isresponsible for the performance of all inspection and tes
40、t requirements specified herein. The producer Producers may use histheirown or any other suitable facilities for the performance of the inspection and test requirements specified herein, unless disapprovedby the purchaser in the order or at the time of contract signing. The purchaser shall have the
41、right to perform any of the inspectionsand tests set forth in this specification where such inspections are deemed necessary to ensure that material conforms to prescribedrequirements.5.2 Lot DefinitionAn inspection lot shall consist of an identifiable quantity of material of the same mill form, all
42、oy, temper,cast or melt lot, and thickness, subjected to inspection at one time.6. General Quality6.1 Unless otherwise specified, the material shall be supplied in the mill finish, shall be uniform as defined by the requirementsof this specification and shall be commercially sound. Any requirement n
43、ot so covered is subject to negotiation between producerand purchaser.6.2 Each coil, sheet and plate shall be examined to determine conformance to this specification with respect to general qualityand identification marking. On approval of the purchaser, however, the producer may use a system of sta
44、tistical quality control forsuch examinations.7. Chemical Composition7.1 LimitsThe sheet and plate shall conform to the chemical composition limits specified in Table 1. Conformance shall bedetermined by the producer, by taking samples in accordance with E716 when the ingots are poured and analyzing
45、 those samplesin accordance with E607, E1251, E34 or EN 14242. At least one sample shall be taken for each group of ingots pouredsimultaneously from the same source of molten metal. If the producer has determined the chemical composition during pouringof the ingots, they shall not be required to sam
46、ple and analyze the finished product.7.2 If it becomes necessary to analyze the finished or semifinished product for conformance to chemical composition limits, themethod used to sample the finished or semifinished product for the determination of chemical composition shall be by agreementbetween th
47、e producer and the purchaser.Analysis shall be performed in accordance with methods of sampling and methods E716,E607, E1251, E34 or EN 14242 (ICPmethod).The number of samples taken for determination of chemical composition of analysisshall be as follows:provided in the following:7.2.1 Methods of Sa
48、mplingWhen samples are taken from the finished or semifinished product, a sample Samples for chemicalanalysis shall be taken to represent each 4000 lb 2000 kg or fraction thereof, of material in the lot, exceptin accordance withPractice B985that not more than one sample shall be required per piece7.
49、2.2 Methods of AnalysisAnalysis shall be performed in accordance with Test Method E607, Test Method E1251, TestMethods E34, or CEN EN 14242 (ICP method).B928/B928M 1337.3 Other methods of analysis or in the case of dispute may be by agreement between the producer and the purchaser.TABLE 2 Longitudinal Mechanical Property Limits, Inch-Pound UnitsA,Bcolwidth=“1.03in“/COLSPECTemper Specified Thickness,in. Tensile Strength, ksi Yield Strength (0.2 % offset), ksi Elongationor 4min max min maxAlloy 5059H116 0.078 to 0.249 54.0 . 39.0 .H116 0.078
