1、Designation: B 928/B 928M 07Standard Specification forHigh Magnesium Aluminum-Alloy Sheet and Plate for MarineService and Similar Environments1This standard is issued under the fixed designation B 928/B 928M; the number immediately following the designation indicates the yearof original adoption or,
2、 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*1.1 This specification covers high magnesium (Note 1)marine application aluminum-a
3、lloy (Note 2), in those alloy-tempers shown in Table 2 Table 3 and Table 4 Table 5, forflat sheet, coiled sheet, and plate, in the mill finish that areintended for marine and similar environments:NOTE 1The term high magnesium in the general sense includes thosealloys containing 3 % or more nominal m
4、agnesium.NOTE 2Throughout this specification use of the term alloy in thegeneral sense includes aluminum as well as aluminum alloy.1.2 Alloy and temper designations are in accordance withANSI H35.1/H35.1(M). The equivalent Unified NumberingSystem alloy designations are those of Table 1 preceded byA9
5、,for example, A95083 for 5083 in accordance with PracticeE 527.1.3 The values stated in either SI units (Table 3 and Table 5)or inch-pound units (Table 2 and Table 4) are to be regardedseparately as standard. The values stated in each system maynot be exact equivalents; therefore each system shall b
6、e usedindependently of each other. Combining values from the twosystems may result in non-conformance with the standard.1.4 For acceptance criteria for inclusion of new aluminumand aluminum alloys in this specification, see Annex A2.1.5 This standard does not purport to address all of thesafety conc
7、erns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on theda
8、te of material purchase, unless otherwise noted, form a partof this specification to the extent referenced herein:2.2 ASTM Standards:2B 557 Test Methods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy ProductsB 557M Test Methods for Tension Testing Wrought andCast Aluminum- and Mag
9、nesium-Alloy Products MetricB 660 Practices for Packaging/Packing of Aluminum andMagnesium ProductsB 666/B 666M Practice for Identification Marking of Alu-minum and Magnesium ProductsB 881 Terminology Relating to Aluminum- andMagnesium-Alloy ProductsE3 Guide for Preparation of Metallographic Specime
10、nsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE34 Test Methods for ChemicalAnalysis ofAluminum andAluminum-Base AlloysE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE 527 Practice for Number
11、ing Metals and Alloys (UNS)E 716 Practices for Sampling Aluminum and AluminumAlloys for Spectrochemical AnalysisE 1251 Test Method for Analysis of Aluminum and Alumi-num Alloys by Atomic Emission SpectrometryG66 Test Method for Visual Assessment of ExfoliationCorrosion Susceptibility of 5XXX Series
12、Aluminum Al-loys (ASSET Test)G67 Test Method for Determining the Susceptibility toIntergranular Corrosion of 5XXX SeriesAluminumAlloysby Mass Loss After Exposure to Nitric Acid (NAMLTTest)2.3 ANSI Standards:3H35.1/H35.1(M) Alloy and Temper Designation Systemsfor AluminumH35.2 Dimensional Tolerances
13、forAluminum Mill ProductsH35.2(M) Dimensional Tolerances for Aluminum MillProducts3. Terminology3.1 DefinitionsRefer to Terminology B 881 for definitionsof product terms used in this specification.3.2 Definitions of Terms Specific to This Standard:1This specification is under the jurisdiction of AST
14、M Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum Alloy Wrought Products.Current edition approved May 15, 2007. Published June 2007. Originallyapproved in 2003. Last previous edition approved in 2004 as B 928/B 928M 04a.2For referenced ASTM
15、standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,Arlington
16、, VA 22209, http:/www.aluminum.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.1 exfoliationcorrosion that proceeds laterally from thesites of initiation along
17、 planes parallel to the original rollingsurface, generally at grain boundaries, forming corrosionproducts that force metal away from the body of the material,giving rise to a layered appearance.3.2.2 intergranular corrosioncorrosion that preferentiallyoccurs at, or adjacent to, the grain boundaries
18、of a metal oralloy.3.2.3 sensitizationthe development of a continuous ornearly continuous grain boundary precipitate in 5xxx alloy-temper material, that causes the material to be susceptible tointergranular forms of corrosion.3.2.4 stress-corrosion crackinga cracking process thatrequires the simulta
19、neous action of a corrodent, and sustainedtensile stress. (This excludes corrosion-reduced sections, whichfail by fast fracture. It also excludes intercrystalline or tran-scrystalline corrosion which can disintegrate an alloy withouteither applied or residual stress.)4. Ordering Information4.1 Order
20、s for material to this specification shall include thefollowing information:4.1.1 This specification designation (which includes thenumber, the year, and the revision letter, if applicable),4.1.2 Quantity in pieces or pounds kilograms,4.1.3 Alloy (see 7.1 and Table 1),4.1.4 Temper (see 8.1 and Table
21、 2 and Table 4 Table 3 andTable 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 specificationshall include the following information when required by thepurchaser:4.2.1 Whether inspection or wit
22、ness of inspection and testsby the purchasers representative is required prior to materialshipment (see 11.1),4.2.2 Whether Practices B 660 applies and, if so, the levelsof preservation, packaging, and packing required (see 15.3),4.2.3 Whether certification is required (see Section 13), and.4.2.4 Wh
23、ether tensile testing should be in the longitudinalor long transverse direction (see 8.5).5. Responsibility for Quality Assurance5.1 Responsibility for Inspection and TestsUnless other-wise specified in the contract or purchase order, the producer isresponsible for the performance of all inspection
24、and testrequirements specified herein. The producer may use his ownor any other suitable facilities for the performance of theinspection and test requirements specified herein, unless dis-approved by the purchaser in the order or at the time of contractsigning. The purchaser shall have the right to
25、perform any ofthe inspections and tests set forth in this specification wheresuch inspections are deemed necessary to ensure that materialconforms to prescribed requirements.5.2 Lot DefinitionAn inspection lot shall consist of anidentifiable quantity of material of the same mill form, alloy,temper,
26、cast or melt lot, and thickness, subjected to inspectionat one time.6. General Quality6.1 Unless otherwise specified, the material shall be sup-plied in the mill finish, shall be uniform as defined by therequirements of this specification and shall be commerciallysound. Any requirement not so covere
27、d is subject to negotia-tion between producer and purchaser.6.2 Each coil, sheet and plate shall be examined to deter-mine conformance to this specification with respect to generalquality and identification marking. On approval of the pur-chaser, however, the producer may use a system of statistical
28、quality control for such examinations.7. Chemical Composition7.1 LimitsThe sheet and plate shall conform to the chemi-cal composition limits specified in Table 1. Conformance shallbe determined by the producer, by the analysis of samplestaken at the time the ingots are cast or samples taken from the
29、finished or semifinished product. If the producer has deter-mined the chemical composition of the material during thecourse of manufacture, additional sampling and analysis of thefinished product shall not be required.7.2 Number of SamplesThe number of samples taken fordetermination of chemical comp
30、osition shall be as follows:TABLE 1 Chemical Composition LimitsA,B,CAlloy Silicon Iron Copper Manganese Magnesium Chromium Zinc TitaniumOther ElementsDAluminumEach TotalE5059 0.45 0.50 0.25 0.6 to 1.2 5.0 to 6.0 0.25 0.4 to0.9 0.20 0.05F0.15 remainder5083 0.40 0.40 0.10 0.40 to 1.0 4.0 to 4.9 0.05 t
31、o 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 0.25 0.15 0.05 0.15 remainder5383 0.25 0.25 0.20 0.7 to 1.0 4.0 to 5.2 0.25 0.40 0.15 0.05G0.15 remainder5456 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 remainderALimits are in wei
32、ght percent maximum unless shown as a range or stated otherwise.BAnalysis shall be made for the elements for which limits are shown in this table.CFor purposes of determining conformance to these limits, an observed value or a calculated value attained from analysis shall be rounded to the nearestun
33、itinthelast right-hand place of figures used in expressing the specified limit, in accordance with the rounding-off method of Practice E 29.DOthers include listed elements for which no specific limit is shown, as well as unlisted metallic elements, but doesnt include elements shown with composition
34、limitsin the footnotes. The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not required and may not cover allmetallic Others elements. Should any analysis by the producer or the purchaser establish that an Others element exceeds the limi
35、t of Each or that the aggregate of severalOthers elements exceeds the limit of Total, the material shall be considered nonconforming.EOther ElementsTotal shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.F0.05 to 0.25 Zr.G0.20
36、 Zr max.B 928/B 928M 072TABLE 2 Longitudinal Mechanical Property Limits, Inch-Pound UnitsA,BTemperSpecified Thickness,in.Tensile Strength, ksi Yield Strength (0.2 % offset), ksiElongation in 2 in.or 43 Diameter, min, %min max min maxAlloy 5059H116 0.078 to 0.249 54.0 . 39.0 . 100.250 to 0.787 54.0 .
37、 39.0 . 100.788 to 1.575 52.0 . 38.0 . 10H321 0.078 to 0.249 54.0 . 39.0 . 100.250 to 0.787 54.0 . 39.0 . 100.788 to 1.575 52.0 . 38.0 . 10Alloy 5083H116 0.063 to 0.499 44.0 . . . 31.0 . . . 100.500 to 1.250 44.0 . . . 31.0 . . . 121.251 to 1.500 44.0 . . . 31.0 . . . 121.501 to 3.000 41.0 . . . 29.
38、0 . . . 12H321 0.125 to 0.187 44.0 56.0 31.0 . . . 100.188 to 1.500 44.0 56.0 31.0 . . . 121.501 to 3.000 41.0 56.0 29.0 . . . 12Alloy 5086H116 0.063 to 0.249 40.0 . . . 28.0 . . . 80.250 to 0.499 40.0 . . . 28.0 . . . 100.500 to 1.250 40.0 . . . 28.0 . . . 101.251 to 2.000 40.0 . . . 28.0 . . . 10H
39、321 0.063 to 0.249 40.0 52.0 28.0 . . . 80.250 to 0.320 40.0 52.0 28.0 . . . 9Alloy 5383H116 0.118 to 0.500 48.0 . 33.0 . 100.501 to 2.000 48.0 . 33.0 . 10H321 0.118 to 0.500 48.0 . 33.0 . 100.501 to 2.000 48.0 . 33.0 . 10Alloy 5456H116 0.063 to 0.499 46.0 . . . 33.0 . . . 100.500 to 1.250 46.0 . .
40、. 33.0 . . . 121.251 to 1.500 44.0 . . . 31.0 . . . 121.501 to 3.000 41.0 . . . 29.0 . . . 123.001 to 4.000 40.0 . . . 25.0 . . . 12H321 0.100 to 0.187 48.0 59.0 34.0 . . . 100.188 to 0.499 46.0 59.0 33.0 46.0 120.500 to 1.500 44.0 56.0 31.0 44.0 121.501 to 3.000 41.0 54.0 29.0 43.0 12ATo determine
41、conformance to this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi and each value forelongation to the nearest 0.5 %, both in accordance with the rounding method of Practice E 29.BThe basis for establishment of mechanical property limits
42、 is shown in Annex A1.B 928/B 928M 073TABLE 3 Longitudinal Mechanical Property Limits SI UnitsA,BTemperSpecified Thickness, mm Tensile Strength, MPa Yield Strength (0.2 % offset), MPa Elongation, min, %Cover through min max min max in 50 mmin 53 Diameter(5.65 =A )Alloy 5059H116 1.99 6.30 370 . 270 .
43、 10 .6.30 12.50 370 . 270 . 10 .12.50 20.00 370 . 270 . . 1020.00 40.00 360 . 260 . . 10H321 1.99 6.30 370 . 270 . 10 .6.30 12.50 370 . 270 . 10 .12.50 20.00 370 . 270 . . 1020.00 40.00 360 . 260 . . 10Alloy 5083H116 1.60 12.50 305 . . . 215 . . . 10 . . .12.50 30.00 305 . . . 215 . . . . . . 1030.0
44、0 40.00 305 . . . 215 . . . . . . 1040.00 80.00 285 . . . 200 . . . . . . 10H321 3.20 5.00 305 385 215 . . . 10 . . .5.00 12.50 305 385 215 . . . 12 . . .12.50 40.00 305 385 215 . . . . . . 1040.00 80.00 285 385 200 . . . . . . 10Alloy 5086H116 1.60 6.30 275 . . . 195 . . . 8 . . .6.30 12.50 275 . .
45、 . 195 . . . 10 . . .12.50 30.00 275 . . . 195 . . . . . . 930.00 50.00 275 . . . 195 . . . . . . 9H321 1.60 6.30 275 355 195 . . . 8 . . .6.30 8.00 275 355 195 . . . 9 . . .Alloy 5383H116 3.00 12.50 330 . 230 . 10 .12.50 50.00 330 . 230 . . 10H321 3.00 12.50 330 . 230 . 10 .12.50 50.00 330 . 230 .
46、. 10Alloy 5456H116 1.60 12.50 315 . . . 230 . . . 10 . . .12.50 30.00 315 . . . 230 . . . . . . 1030.00 40.00 305 . . . 215 . . . . . . 1040.00 80.00 285 . . . 200 . . . . . . 1080.00 110.00 275 . . . 170 . . . . . . 10H321 2.50 4.00 330 405 235 . . . 10 . . .4.00 12.50 315 405 230 315 12 . . .12.50
47、 40.00 305 385 215 305 . . . 1040.00 80.00 285 370 200 295 . . . 10ATo determine conformance to this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 1 MPa and each value forelongation to the nearest 0.5 %, both in accordance with the rounding met
48、hod of Practice E 29.BThe basis for establishment of mechanical property limits is shown in Annex A1.CElongations in 50 mm apply for thicknesses up through 12.50 mm and in 53 diameter (5.65 =A ) for thicknesses over 12.50 mm where A is the cross-sectional areaof the specimen.TABLE 4 Long Transverse
49、Mechanical Property Limits, Inch-Pound UnitsA,BTemperSpecified Thickness, in. Tensile Strength, ksi Yield Strength (0.2 % offset), ksiElongation in 2 in.or 34 Diameter, min, %min max min maxAlloy 5083H116 0.118 to 0.249 44.0 . . . 31.0 . . . 100.250 to 0.499 44.0 . . . 31.0 . . . 10H321 0.118 to 0.236 44.0 55.0 31.0 . . . 10Alloy 5086H321 0.250 to 0.320 40.0 52.0 28.0 . . . 10ATo determine conformance to this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi and each value forelongation to the ne
