1、Designation:B95108StandardPracticeforCodificationofUnalloyedMagnesiumandMagnesium-Alloys,CastandWrought1ThisstandardisissuedunderthefixeddesignationB951;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindic
2、atestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeprovidesasystemfordesignatingunal-loyedmagnesiumandmagnesium-alloysthathavebeenusedcommerciallysince1952,andthusisintendedtobetheregistrationsourceforunalloyedmagnesiuma
3、ndmagnesium-alloys.ArecordofdesignationsalongwiththeestablishedcompositionsisgiveninTable2.1.2TheequivalentUnifiedNumberingSystem(UNS)alloydesignationsshownintheappendixesareinaccordancewithPracticeE527.2.ReferencedDocuments2.1Thefollowingdocumentsformapartofthispracticetotheextentreferencedherein:2
4、.2ASTMStandards:2B80SpecificationforMagnesium-AlloySandCastingsB90/B90MSpecificationforMagnesium-AlloySheetandPlateB91SpecificationforMagnesium-AlloyForgingsB92/B92MSpecificationforUnalloyedMagnesiumIngotandStickForRemeltingB93/B93MSpecificationforMagnesiumAlloysinIngotFormforSandCastings,PermanentM
5、oldCastings,andDieCastingsB94SpecificationforMagnesium-AlloyDieCastingsB107/B107MSpecificationforMagnesium-AlloyEx-trudedBars,Rods,Profiles,Tubes,andWireB199SpecificationforMagnesium-AlloyPermanentMoldCastingsB403SpecificationforMagnesium-AlloyInvestmentCast-ingsB843SpecificationforMagnesiumAlloyAno
6、desforCa-thodicProtectionE527PracticeforNumberingMetalsandAlloysintheUnifiedNumberingSystem(UNS)3.BasisofCodification3.1Thedesignationsforalloysandunalloyedmetalsarebasedontheirchemicalcompositionlimits.NOTE1Forunalloyedmagnesium,magnesium-alloys,castandwrought,standardlimitsforalloyingelementsandim
7、puritiesareex-pressedtothefollowingplaces:Lessthan0.0001%(usedonlyformagnesiumalloys)0.0000X0.0001to0.001%0.000X0.001to0.01%0.00X0.01to0.10%Unalloyedaluminummadebyarefiningprocess0.0XXAlloysandunalloyedaluminumormagnesiumnotmadebyarefiningprocess0.0X0.10through0.55%0.XXOver0.55%0.X,X.X,XX.X3.2Design
8、ationsshallbeassigned,revised,andcancelledbySubcommitteeB07.04ofASTMCommitteeB07onLightMetalsandAlloysonwrittenrequeststoitschairman.Com-pletechemicalcompositionlimitsshallbesubmittedwithrequestforassignmentorrevisionofdesignations.Arbitraryassignmentsbyothersubcommitteesorcommitteeswillnotberecogni
9、zed.4.Alloys4.1Designationforalloysshallconsistofnotmorethantwolettersrepresentingthealloyingelements(Note2)specifiedinthegreatestamount,arrangedinorderofdecreasingpercent-ages,orinalphabeticalorderifofequalpercentages,followedbytherespectivepercentagesroundedofftowholenumbersandaserialletter(Notes3
10、).Thefullnameofthebasemetalprecedesthedesignation,butitisomittedforbrevitywhenthebasemetalbeingreferredtoisobvious.NOTE2Forcodification,analloyingelementisdefinedasanelement(otherthanthebasemetal)havingaminimumcontentgreaterthanzeroeitherdirectlyspecifiedorcomputedinaccordancewiththepercentagesspeci
11、fied.1ThispracticeisunderthejurisdictionofASTMCommitteeB07onLightMetalsandAlloysandisthedirectresponsibilityofSubcommitteeB07.04onMagnesiumAlloyCastandWroughtProducts.CurrenteditionapprovedMarch1,2008.PublishedMarch2008.Originallyapprovedin2007.Lastpreviouseditionapprovedin2007asB95107.2Forreference
12、dASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatserviceastm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandardsDocumentSummarypageontheASTMwebsite.1CopyrightASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.NOTE3
13、Theserialletterisarbitrarilyassignedinalphabeticalse-quencestartingwith“A”(omitting“I”and“O”)andservestodifferentiateotherwiseidenticaldesignations.Aserialletterisnecessarytocompleteeachdesignation.4.2ThelettersusedtorepresentthegreaterofthetwoalloyingelementsshallbethoseinTable1.4.3Inroundingpercen
14、tages,thenearestwholenumbershallbeused.Iftwochoicesarepossibleaswhenthedecimalisfollowedbya5only,ora5followedonlybyzeros,thenearestevenwholenumbershallbeused.4.4Whenarangeisspecifiedforthealloyingelement,theroundedmeanshallbeusedinthedesignation.4.5Whenonlyaminimumpercentageisspecifiedforthealloying
15、element,theroundedminimumpercentageshallbeusedinthedesignation.5.UnalloyedMetals5.1Designationsforunalloyedmetalsconsistofthespeci-fiedminimumpurity,alldigitsretainedbutdroppingthedecimalpoint,followedbyaserialletter(Note3).Thefullnameofthebasemetalprecedesthedesignation,butitisomittedforbrevitywhen
16、thebasemetalbeingreferredtoisobvious.6.Keywords6.1magnesium;UNSdesignationsTABLE1LettersRepresentingAlloyingElementsAAluminumQSilverCCopperSSiliconERareearthsTTin*HThorium*VGadoliniumJStrontiumWYttriumKZirconiumZZincLLithium*ForhistoricalreferenceMManganeseB951082TABLE 2 Unalloyed Magnesium and Magn
17、esium-Alloy Registration(A Registration Record of Magnesium Alloys with Established Designations and Chemical Composition)NOTECast or wrought product compositions may differ from casting ingot compositions.Designation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTM
18、Magnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each Total9980A M19980 B 92/B 92M 99.80min0.02 0.10 0.001 0.01 Sn0.01 Pb0.006 Na0.059980B M19991 B 92/B 92M 99.80min0.02 0.10 0.005 0.0
19、1 Sn0.01 Pb0.059990A M19990 B 92/B 92M 99.90min0.003 0.04 0.004 0.001 0.005A0.019995A M19995 B 92/B 92M 99.95min0.01 0.003 0.004 0.001 0.005 0.01 TiA0.0059998A M19998 B 92/B 92M 99.98min0.004 0.0005 0.002 0.002 0.0005 0.003 0.001 TiA0.00003 B0.001 Pb0.005AJ52ABM17520 B94C4.5-5.50.010 0.004D0.24-0.6D
20、0.001 0.10 1.7-2.30.22 0.01AJ52ABEM17521 B 93/B 93MC4.6-5.50.008 0.004 0.25-0.50.001 0.08 1.8-2.30.20 0.01AJ62ABM17620 B94C5.5-6.60.010 0.004D0.24-0.6D0.001 0.10 2.0-2.80.22 0.01AJ62ABEM17621 B 93/B 93MC5.6-6.60.008 0.004 0.26-0.050.001 0.08 2.1-2.80.20 0.01AM50A M10500 B94C4.4-5.40.010 0.004D0.26-0
21、.6D0.002 0.10 0.22 0.02AM50AEM10501 B 93/B 93MC4.5-5.30.008 0.004 0.28-0.500.001 0.08 0.22 0.01AM60A M10600 B94C5.5-6.50.35 0.13-0.60.03 0.50 0.22AM60A M10601 B 93/B 93MC5.6-6.40.25 0.15-0.500.01 0.20 0.20 0.30AM60B M10602 B94C5.5-6.50.010 0.005D0.24-0.6D0.002 0.10 0.22 0.02AM60BEM10603 B 93/B 93MC5
22、.6-6.40.008 0.004 0.26-0.500.001 0.10 0.20 0.01AM100A M10100 B80B 199B 403C9.3-10.70.10 0.10-0.350.01 0.30 0.30 0.30AM100A M10101 B 93/B 93MC9.4-10.60.08 0.13-0.350.010 0.20 0.2 0.30AS21A M10210 B94C1.8-2.50.01 0.005 0.18-0.70.001 0.7-1.2 0.20 0.01AS21AEM10211 B 93/B 93MC1.9-2.50.008 0.004 0.2-0.6 0
23、.001 0.7-1.2 0.20 0.01AS21BBM10212 B94C1.8-2.50.008 0.0035 0.05-0.150.001 0.06-0.250.7-1.2 0.25 0.01AS21BBEM10213 B 93/B 93MC1.9-2.50.008 0.0035 0.05-0.150.001 0.06-0.250.7-1.2 0.25 0.01AS41A M10410 B94C3.5-5.00.06 0.20-0.500.03 0.50-1.50.12B951083TABLE 2 ContinuedDesignation Chemical Composition, %
24、 max unless shown as a range or as a minPractice UNSSeeASTMMagnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each TotalAS41A M10411 B 93/B 93MC3.7-4.80.04 0.22-0.480.01 0.60-1.40.10 0.3
25、0AS41B M10412 B94C3.5-0.7D0.02 0.0035D0.35-0.70.002 0.50-1.50.12 0.02AS41BEM10413 B 93/B 93MC3.7-4.80.015 0.0035 0.35-0.60.001 0.60-1.40.10 0.01AZ31B M11311 B 90/B 90MB91B 107/B 107MB 843C2.5-3.50.04 0.05 0.005 0.20-1.00.005 0.10 0.6-1.4 0.30AZ31C M11312 B 107/B 107MC2.4-3.60.10 0.15-1.0F0.03 0.10 0
26、.50-1.5 0.30AZ31D M11313 B 843C2.5-3.50.04 0.04 0.002 0.20-1.00.0010 0.05 0.6-1.4 0.01 0.30AZ61A M11610 B91B 107/B 107MC5.8-7.20.05 0.005 0.15-0.50.005 0.10 0.40-1.5 0.30AZ63A M11630 B80C5.3-6.70.25 0.15-0.350.01 0.30 2.5-3.5 0.30AZ63A M11631 B 93/B 93MC5.5-6.50.20 0.15-0.350.010 0.20 2.7-3.3 0.30AZ
27、63B M11632 B 843C5.3-6.70.02 0.003 0.15-0.70.002 0.10 2.5-3.5 0.30AZ63C M11634 B 843C5.3-6.70.05 0.003 0.15-0.70.003 0.30 2.5-3.5 0.30AZ63D M11636 B 843C5.0-7.00.10 0.003 0.15-0.70.003 0.30 2.0-4.0 0.30AZ80A M11800 B91B 107/B 107MC7.8-9.20.05 0.005 0.12-0.50.005 0.10 0.20-0.8 0.30AZ81A M11810 B80B 1
28、99B 403C7.0-8.10.10 0.13-0.350.01 0.30 0.40-1.0 0.30AZ81A M11811 B 93/B 93MC7.2-8.00.08 0.15-0.350.010 0.20 0.5-0.9 0.30AZ91A M11910 B94C8.3-9.70.10 0.13-0.500.03 0.50 0.35-1.0AZ91A M11911 B 93/B 93MC8.5-9.50.08 0.15-0.400.01 0.20 0.45-0.9 0.30AZ91B M11912 B94C8.3-9.70.35 0.13-0.500.03 0.50 0.35-1.0
29、AZ91B M11913 B 93/B 93MC8.5-9.50.25 0.15-0.400.01 0.20 0.45-0.9 0.30AZ91C M11914 B80B 199B 403C8.1-9.30.10 0.13-0.350.01 0.30 0.40-1.0 0.30AZ91C M11915 B 93/B 93MC8.3-9.20.08 0.15-0.350.010 0.20 0.45-0.9 0.30AZ91D M11916 B94C8.3-9.70.030 0.005D0.15-0.50D0.002 0.10 0.35-1.0 0.02B951084TABLE 2 Continu
30、edDesignation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTMMagnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each TotalAZ91DEM11917 B 93/B 93MC8.5-9
31、.50.025 0.004 0.17-0.400.001 0.08 0.45-0.9 0.01AZ91E M11919 B80B 199B 403C8.1-9.30.015 0.005G0.17-0.350.0010 0.20 0.40-1.0 0.01 0.30AZ91E M11918 B 93/B 93MC8.3-9.20.015 0.005 0.17-0.500.0010 0.20 0.45-0.9 0.01 0.30AZ92A M11920 B80B 199C8.3-9.70.25 0.10-0.350.01 0.30 1.6-2.4 0.0AZ92A M11920 B 403C8.3
32、-9.70.10 0-0.35 0.01 0.30 1.6-2.4 0.30AZ92A M11921 B 93/B 93MC8.5-9.50.20 0.13-0.350.010 0.20 1.7-2.3 0.30AZ101AHM11101C9.5-10.50.05 0.005 0.13-0.050.005 0.05 0.75-1.250.30EQ21A M18330 B80B 199B 403C0.05-0.100.01 1.5-3.0I1.3-1.7 0.40-1.00.30EQ21A M18330 B 93/B 93MC0.05-0.100.01 1.5-3.0I0.01 1.3-1.7
33、0.30-1.00.0EV31AJM12310 B80C0.01 1.0-1.70.010 2.6-3.1 0.0020 0.4K0.05 0.20-0.500.40-1.00.01EV31AJM12311 B 93/B 93MC0.01 1.0-1.70.010 2.6-3.1 0.0020 0.4K0.05 0.20-0.500.3-1.00.01EZ33A M12330 B80B 199B 403C0.10 0.01 2.5-4.0L2.0-3.1 0.50-1.00.30EZ33A M12331 B 93/B 93MC0.03 0.010 2.6-3.9L0.01 2.0-3.0 0.
34、3-1.00.30K1A M18010 B80B 403C0.40-1.00.30K1A M18011 B 93/B 93MC0.03 0.010 0.01 0.30-1.00.30M1A M15100 B 107/B 107MC0.30 0.05 1.2-2.0 0.01 0.10 0.30M1C M15102 B 843C0.01 0.02 0.03 0.50-1.30.001 0.05 0.05 0.30QE22A M18220 B80B 199B 403C0.10 0.01 1.8-2.5I2.0-3.0 0.40-1.00.30QE22A M18221 B 93/B 93MC0.03
35、 0.15 0.010 1.9-2.4I0.01 2.0-3.0 0.2 0.30-1.00.0WE54A M18410 B80C0.03 0.2 0.03 1.5-2.0 0.005 2.0M0.01 4.75-5.5 0.20 0.3-1.00.20 0.30WE54A M18410 B 93/B 93MC0.03 .20 0.15 1.5-2.0 0.005 2.0M0.01 4.75-5.5 0.20 0.3-1.00.30WE54A M18410 B 107/B 107MC0.03 0.2 0.03 1.5-2.0 0.005 2.0M0.01 4.75-5.5 0.20 0.40-
36、1.00.2WE43A M18430 B80C0.03 0.01 0.2 0.15 2.0-2.5 0.005 1.9M0.01 3.7-4.3 0.20 0.40-1.00.2WE43A M18431 B 93/B 93MC0.03 0.18 0.15 2.0-2.5 0.005 1.9M0.01 3.7-4.3 0.20 0.3-1.00.30B951085TABLE 2 ContinuedDesignation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTMMagnesi
37、um Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther ElementsSpecific Each TotalWE43B M18432 B80C0.02 0.010 0.2 0.03 2.0-2.5 0.005 1.9MN3.7-4.3 0.20N0.40-1.00.01WE43B M18432 B 107/B 107MC0.02 0.010 0.2 0.03 2.0-2
38、.5 0.005 1.9 3.7-4.3N0.40-1.00.01WE43B M18433 B 93/B 93MC0.01 0.18 0.03 2.0-2.5 0.004 1.9MN3.7-4.3N0.3-1.00.01ZC63A M16331 B80C2.4-3.00.25-0.750.01 0.20 5.5-6.5 0.30ZC63A M16331 B 93/B 93MC2.4-3.000.25-0.750.001 0.20 5.5-6.5 0.30ZE41A M16410 B80B 403C0.10 0.15 0.01 0.75-1.75L3.5-5.0 0.40-1.00.30ZE41
39、A M16411 B 93/B 93MC0.03 0.15 0.01 1.0-1.75L0.01 3.7-4.8 0.30-1.00.30ZE63A M16631 B 93/B 93MC0.03 0.010 2.0-3.00.01 5.5-6.0 0.3-1.00.30ZK40A M16400 B 107/B 107MC3.5-4.5 0.45min0.30ZK51A M16510 B80C0.10 0.01 3.6-5.5 0.50-1.00.30ZK51A M16511 B 93/B 93MC0.03 0.010 0.01 3.8-5.3 0.3-1.00.30ZK60A M16600 B
40、91B 107/B 107MC4.8-6.2 0.45min0.30B951086TABLE 2 ContinuedDesignation Chemical Composition, % max unless shown as a range or as a minPractice UNSSeeASTMMagnesium Aluminum Calcium Copper Gadolinium Iron Lithium Manganese Neodymium Nickel RareEarthsSilicon Silver Strontium Yttrium Zinc ZirconiumOther
41、ElementsSpecific Each TotalZK61A M16610 B80B 403C0.10 0.01 5.5-6.5 0.6-1.00.30ZK61A M16611 B 93/B 93MC0.03 0.010 0.01 5.7-6.3 0.3-1.00.30AFor nuclear applications.BAlloysAJ52A,AJ62A, andAS21B are patented compositions for elevated temperature applications. Interested parties are invited to submit in
42、formation regarding the identification of alternatives to these compositionsto ASTM International. your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. ASTM International takes no position respecting the validity of anypatent rig
43、hts asserted in connection with any item mentioned in this specification. Users of this specification are expressly advised that determination of the validity of any such patent rights, and the risk of infringementof such rights, are entirely their own responsibility.CRemainder.DFor alloys AS41B, AM
44、50A, AJ52A, AM60B, AJ62A, and AZ91D, if either the minimum Manganese or maximum Iron content is not met, then the permissible Iron to Manganese ratio shall not exceed 0.010, 0.015,0.021, and 0.032, respectively.EBeryllium 0.0005 0.0015.FManganese minimum limit need not be met if Iron is 0.005 % or l
45、ess.GIf the iron content exceeds 0.005 %, the Iron to Manganese ratio shall not exceed 0.032 for AZ91E alloy.HRod for welding AZ91 and AZ92 alloys.IRare earth elements are in the form of Didymium, with not less than 70 % Neodymium and remainder substantially Praesodymium.JAlloy EV31A is a patented c
46、omposition, suitable for elevated temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositions to ASTMInternational. Comments will receive careful consideration at a meeting of the responsible technical committee, w
47、hich you may attend. ASTM International takes no position respecting the validity of any patent rightsasserted in connection with any item mentioned in this specification. Users of this specification are expressly advised that determination of the validity of any such patent rights, and the risk of
48、infringement of such rights,are entirely their own responsibility.KOther Rare Earths may also be present to a total maximum of 0.4 %. These Rare Earths shall principally be Cerium, Lanthanum, and Praseodymium.LTotal Rare Earths (TRE) are principally a mixture of Cerium, Lanthanum, Neodymium and Pras
49、eodymium. The Cerium content should not be less than 45 % of the TRE.MOther Rare Earths shall be principally heavy rare earths, such as Gadolinium, Dysprosium, Erbium, and Ytterbium. Other Rare Earths are derived from the Yttrium, typically 80 % Yttrium and 20 % heavy rare earths.NZinc + Silver content shall not exceed 0.20 % in WE43B.B951087APPENDIX(NonmandatoryInformation)X1.EXAMPLESOFCODIFICATIONX1.1Example1ForAlloysAZ91A,B,andC,inSpeci-ficationB93/B93M,“A”representsaluminum,thealloyingelementspecifiedinthegreatestamount;“Z”representszinc,thealloyingelements
