saej1086v001

SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.QUESTIONSREGARDINGTHISDOCUMENT:(412)772-8512FAX:(412)776-0243TOPLACEADOCUMENTORDER;(412)776-4970FAX:(412)776-0790http:\\www.sae.orgCopyright1995SocietyofAutomotiveEngineers,Inc.Allrightsreserved.PrintedinU.S.A.SURFACEVEHICLE400CommonwealthDrive,Warrendale,PA15096-0001RECOMMENDEDPRACTICEJ1086andASTME527REV.JUL95Issued1974-08Revised1995-07SupersedingJ1086DEC92NUMBERINGMETALSANDALLOYSForeword—ThisDocumenthasnotchangedotherthantoputitintothenewSAETechnicalStandardsBoardFormat.UNSdesignationsshallnotbeusedformetalsandalloyswhicharenotregisteredunderthesystemdescribedherein,orforanymetaloralloywhosecompositiondiffersfromthoseregistered.1.Scope1.1ThisSAERecommendedPracticedescribesaunifiednumberingsystem(UNS)formetalsandalloyswhichhavea"commercialstanding"(see6.1),andcoverstheprocedurebywhichsuchnumbersareassigned.Section2describesthesystemofalphanumericdesignationsor"numbers"establishedforeachfamilyofmetalsandalloys.Section3outlinestheorganizationestablishedforadministeringthesystem.Section4describestheprocedureforrequestingnumberassignmenttometalsandalloysforwhichUNSnumbershavenotpreviouslybeenassigned.1.2TheUNSprovidesameansofcorrelatingmanynationallyusednumberingsystemscurrentlyadministeredbysocieties,tradeassociations,andindividualusersandproducersofmetalsandalloys,therebyavoidingconfusioncausedbyuseofmorethanoneidentificationnumberforthesamematerial;andbytheoppositesituationofhavingthesamenumberassignedtotwoormoreentirelydifferentmaterials.Itprovides,also,theuniformitynecessaryforefficientindexing,recordkeeping,datastorageandretrieval,andcrossreferencing.1.3AUNSnumberisnotinitselfaspecification,sinceitestablishesnorequirementsforform,condition,quality,etc.Itisaunifiedidentificationofmetalsandalloysforwhichcontrollinglimitshavebeenestablishedinspecificationspublishedelsewhere.(See6.2.)SAEJ1086andASTME527RevisedJUL95-2-2.References2.1RelatedPublications—Thefollowingpublicationsareprovidedforinformationpurposesonlyandarenotarequiredpartofthisdocument.2.1.1SAEPUBLICATIONS—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001.SAEHS-1086—MetalsandAlloysintheUnifiedNumberingSystem2.1.2ASTMPUBLICATIONS—AvailablefromASTM,100BarrHarborDrive,WestConshohocken,PA19428-2959.ASTME527—PracticeforNumberingMetalsandAlloys(UNS)ASTMPublicationNo.DS-56—MetalsandAlloysandtheUnifiedNumberingSystem3.DescriptionofNumbers(orCodes)EstablishedforMetalsandAlloys3.1Theunifiednumberingsystem(UNS)establishes18seriesofnumbersformetalsandalloys,asshowninTable1.EachUNSnumberconsistsofasingleletter-prefixfollowedbyfivedigits.Inmostcasestheletterissuggestiveofthefamilyofmetalsidentified,forexample,Aforaluminum,Pforpreciousmetals,Sforstainlesssteels.Table2showsthesecondarydivisionofsomeprimaryseriesofnumbers.3.2WhereassomeofthedigitsincertainoftheUNSnumbergroupshavespecialassignedmeaning,eachseriesisindependentoftheothersinsuchsignificance;thispracticepermitsgreaterflexibilityandavoidscomplicatedandlengthyUNSnumbers.(See6.3.)TABLE1—PRIMARYSERIESOFNUMBERSUNSSeriesMetalNonferrousmetalsandalloysA00001-A99999AluminumandaluminumalloysC00001-C99999CopperandcopperalloysE00001-E99999Rareearthandrareearth-likemetalsandalloys(18Items,seeTable2)L00001-L99999Lowmeltingmetalsandalloys(14Items,seeTable2)M00001-M99999Miscellaneousnonferrousmetalsandalloys(12Items,seeTable2)N00001-N99999NickelandnickelalloysP00001-P99999Preciousmetalsandalloys(8Items,seeTable2)R00001-R99999Reactiveandrefractorymetalsandalloys(14Items,seeTable2)Z00001-Z99999ZincandzincalloysFerrousmetalsandalloysD00001-D99999SpecifiedmechanicalpropertiessteelsF00001-F99999CastironsG00001-G99999AISIandSAEcarbonandalloysteels(excepttoolsteels)H00001-H99999AISIH-steelsJ00001-J99999Caststeels(excepttoolsteels)K00001-K99999MiscellaneoussteelsandferrousalloysS00001-S99999Heatandcorrosionresistant(stainless)steelsT00001-T99999ToolsteelsWeldingfillermetalsW00001-W99999Weldingfillermetals,coveredandtubularelectrodes,classifiedbywelddepositcomposition(seeTable2)SAEJ1086andASTME527RevisedJUL95-3-TABLE2—SECONDARYDIVISIONOFSOMESERIESOFNUMBERSUNSSeriesMetalUNSSeriesMetalE00001-E99999RareearthandrareearthlikemetalsandalloysP00001-P99999PreciousmetalsandalloysE00000-E00999ActiniumP00001-P00999GoldE01000-E20999CeriumP01001-P01999IridiumE21000-E45999Mixedrareearths(1)1.Alloysinwhichtherareearthsareusedintheratiooftheirnaturaloccurrence(thatis,unseparatedrareearths).Inthismixture,ceriumisthemostabundantoftherareearthelements.P02001-P02999OsmiumE46000-E47999DysprosiumP03001-P03999PalladiumE48000-E49999ErbiumP04001-P04999PlatinumE50000-E51999EuropiumP05001-P05999RhodiumE52000-E55999GadoliniumP06001-P06999RutheniumE56000-E57999HolmiumP07001-P07999SilverE58000-E67999LanthanumE68000-E68999LutetiumR00001-R99999ReactiveandE69000-E73999NeodymiumrefractorymetalsandalloysE74000-E77999PraseodymiumE78000-E78999PromethiumR01001-R01999BoronE79000-E82999SamariumR02001-R02999HafniumE83000-E84999ScandiumR03001-R03999MolybdenumE85000-E86999TerbiumR04001-R04999Niobium(Columbium)E87000-E87999ThuliumR05001-R05999TantalumE88000-E89999YtterbiumR06001-R06999ThoriumE90000-E99999YttriumR07001-R07999TungstenR08001-R08999VanadiumF00001-F99999CastironsGray,malleable,pearliticR10001-R19999Berylliummalleable,andductile(nodular)R20001-R29999ChromiumcastironsR30001-R39999CobaltR40001-R49999RheniumK00001-K99999MiscellaneousR50001-R59999TitaniumsteelsandferrousalloysR60001-R69999ZirconiumL00001-L99999Low-meltingW00001-W99999Weldingfillermetalsandalloysmetals,classifiedbyweldL00001-L00999BismuthdepositcompositionL01001-L01999CadmiumW00001-W09999CarbonsteelwithnosignificantL02001-L02999CesiumalloyingelementsL03001-L03999GalliumW10000-W19999Manganese-molybdenumlowL04001-L04999IndiumalloysteelsL06001-L06999LithiumW20000-W29999NickellowalloysteelsL07001-L07999MercuryW30000-W39999AusteniticstainlesssteelsL08001-L08999PotassiumW40000-W49999FerriticstainlesssteelsL09001-L09999RubidiumW50000-W59999ChromiumlowalloysteelsL10001-L10999SeleniumW60000-W69999CopperbasealloysL11001-L11999SodiumW70000-W79999SurfacingalloysL13001-L13999TinW80000-W89999NickelbasealloysL50001-L59999LeadZ00001-Z99999ZincandzincalloysZincM00001-M99999MiscellaneousnonferrousmetalsandalloysM00001-M00999AntimonyM01001-M01999ArsenicM02001-M02999BariumM03001-M03999CalciumM04001-M04999GermaniumM05001-M05999PlutoniumM06001-M06999StrontiumM07001-M07999TelluriumM08001-M08999UraniumM10001-M19999MagnesiumM20001-M29999ManganeseM30001-M39999SiliconSAEJ1086andASTME527RevisedJUL95-4-3.3Whereverfeasible,identification"numbers"fromexistingsystemsareincorporatedintotheUNSnumbers.Forexample:Thecarbonsteelwhichispresentlyidentifiedby"AISI1020"(AmericanIron&SteelInstitute)iscoveredby"UNSG10200"andthenickelalloypresentlyidentifiedby"M252"iscoveredby"UNSN07252."3.4Weldingfillermetalsfallintotwogeneralcategories:thosewhosecompositionsaredeterminedbythefillermetalanalysis(e.g.,solidbarewireorrodsandcastrods),andthosewhosecompositionisdeterminedbythewelddepositanalysis(e.g.,coveredelectrodes,flux-coredandothercompositewireelectrodes).ThelatterareassignedtoanewprimaryserieswiththeletterWasshowninTable1.Thesolidbarewireandrodscontinuetobeassignedintheestablishednumberseriesaccordingtotheircomposition.(Readersarecautionednottomaketheirown"assignments"ofnumbersfromsuchlistings,asthiscanresultinunintendedandunexpectedduplicationandconflict.)3.5TheASTMandtheSAEperiodicallypublishup-to-datelistingsofallUNSnumbersassignedtospecificmetalsandalloys,withappropriatereferenceinformationoneach.(See6.6.)Manytradeassociationsalsopublishsimilarlistingsrelatedtomaterialsofprimaryinteresttotheirorganizations.4.OrganizationforAdministeringUnifiedNumberingSystemforMetalsandAlloys4.1TheorganizationforadministeringtheUNSconsistsof:(1)anadvisoryboard,(2)severalnumber-assigningoffices,(3)acorpsofvolunteerconsultants,and(4)staffsatASTMandSAE.Inaddition,SAEandASTMcommitteesdealingwithvariousgroupsofmaterialsmaybeconsulted.4.1.1TheAdvisoryBoardhasapproximately20volunteermemberswhoareaffiliatedwithmajorproducingandusingindustries,tradeassociations,governmentagencies,andstandardssocieties,andwhohaveextensiveexperiencewithidentification,classification,andspecificationofmaterials.TheBoardistheadministrativearmofSAEandASTMonallmatterspertainingtotheUNS.Itcoordinatesthinkingontheformatofeachseriesofnumbersandtheadministrationofeachbyselectedexperts.ItsetsupgroundrulesfordeterminingeligibilityofanymaterialforaUNSnumber,forrequestingsuchnumbers,andforappealingunfavorablerulings.Itisthefinalrefereeonmattersofdisagreementbetweenrequestersandassigners.4.1.2UNSnumberassignersforcertainmaterialsaresetupattradeassociationswhichhavesuccessfullyadministeredtheirownnumberingsystems;forothermaterials,assignersarelocatedattheofficesofSAEandASTM.Eachoftheseassignershastheresponsibilityforadministeringaspecificseriesofnumbers,asshowninTable3.EachconsidersrequestsforassignmentofnewUNSnumbers,andinformsapplicantsoftheactiontaken.TradeassociationUNSnumberassignersalsoreportimmediatelytobothSAEandASTMdetailsofeachnumberassignment.ASTMandSAEassignerscollaboratewithdesignatedconsultantswhenconsideringrequestsforassignmentofnewnumbers.4.1.3ConsultantsareselectedbytheAdvisoryBoardtoprovideexpertknowledgeofaspecificfieldofmaterials.SincetheyareutilizedprimarilybytheBoardandtheSAEandASTMnumberassigners,theyarenotlistedinthisdocument.AttherequestoftheASTMorSAEnumberassigner,aconsultantconsidersarequestforanewnumberinlightofthegroundrulesestablishedforthematerialinvolved,decideswhetheranewnumberisjustified,andinformstheASTMorSAEnumberassigneraccordingly.Thisutilizationofexperts(consultantsandnumberassigners)isintendedtoinsurepromptandfairconsiderationofallrequests.Itpermitseachdecisiontobebasedoncurrentknowledgeoftheneedsofaspecificindustryofproducersandusers.SAEJ1086andASTME527RevisedJUL95-5-TABLE3—NUMBERASSIGNERSANDAREASOFRESPONSIBILITYTheAluminumAssociationAluminumandaluminumalloys90019thStreet,NW,Suite30UNSNumberSeries:A00001-A99999Washington,DC20006Telephone:(202)862-5100AmericanSocietyforTestingandMaterialsRareearthandrareearth-likemetalsandalloys100BarrHarborDriveUNSNumberSeries:E00001-E99999WestConshohocken,PA19428-2959Attention:OfficeforUnifiedNumberingSystemforMetalsCastironsTelephone:(215)299-5400UNSNumberSeries:F00001-F99999CaststeelsUNSNumberSeries:J00001-J99999MiscellaneoussteelsandferrousalloysUNSNumberSeries:K00001-K99999LowmeltingmetalsandalloysUNSNumberSeries:L00001-L99999MiscellaneousnonferrousmetalsandalloysUNSNumberSeries:M00001-M99999PreciousmetalsandalloysUNSNumberSeries:P00001-P99999AmericanWeldingSocietyWeldingfillermetals550N.W.LeJeuneRoadUNSNumberSeries:W00001-W99999P.O.Box351040Miami,FL33135Attention:OfficeforUnifiedNumberingSystemTelephone:(800)443-9353Fax:303-443-7559CopperDevelopmentAssociationCopperandcopperalloys260MadisonAvenueUNSNumberSeries:C00001-C99999NewYork,NY10016-2401Attention:OfficeforUnifiedNumberingSystemforMetalsTelephone:(212)251-7200SAE(SocietyofAutomotiveEngineers)Carbonandalloysteels400CommonwealthDriveUNSNumberSeries:G00001-G99999Warrendale,PA15096-0001Attention:OfficeforUnifiedNumberingSystemforMetalsH-steelsTelephone:(412)776-4841UNSNumberSeries:H00001-H99999NickelandnickelalloysUNSNumberSeries:N00001-N99999Heatandcorrosionresistant(stainless)steelsUNSNumberSeries:S00001-S99999ToolsteelsUNSNumberSeries:T00001-T99999ZincInstitute,Inc.Zincandzincalloys292MadisonAvenueUNSNumberSeries:Z00001-Z99999NewYork,NY10017Attention:OfficeforUnifiedNumberingSystemforMetalsTelephone:(212)578-4750SAEJ1086andASTME527RevisedJUL95-6-4.1.4StaffmembersatSAEandASTMmaintainduplicatemasterlistingsofallUNSnumbersassigned.4.1.5EstablishedSAEandASTMcommitteeswhichnormallydealwithstandardsandspecificationsforthematerialscoveredbytheUNS,andotherknowledgeablepersons,arecalleduponbytheAdvisoryBoardforadvicewhenconsideringappealsfromunfavorablerulingsinthematterofUNSnumberassignments.5.ProcedureforRequestingNumberAssignmenttoMetalsandAlloysNotAlreadyCoveredbyUNSNum-bers(orCodes)5.1UNSnumbersareassignedonlytometalsandalloyswhichhaveacommercialstanding(asdefinedin6.1).5.2TheneedforanewnumbershouldalwaysbeverifiedbydeterminingfromthelatestcompletelistingofalreadyassignedUNSnumbersthatausablenumberisnotavailable.(See6.4.)5.3ForanewUNSnumbertobeassigned,thecomposition(orotherproperties,asapplicable)mustbesignificantlydifferentfromthoseofanymetaloralloywhichhasalreadybeenassignedaUNSnumber.5.3.1Inthecaseofmetalsoralloysthatarenormallyidentifiedorspecifiedbychemicalcomposition,thechemicalcompositionlimitsmustbereported.5.3.2Inthecaseofmetalsoralloyswhicharenormallyidentifiedorspecifiedbymechanical(orother)properties,suchpropertiesandlimitsthereofmustbereported.Onlythosechemicalelementsandlimits,ifany,whicharesignificantindefiningsuchmaterialsneedbereported.5.4Requestsfornewnumbersshallbesubmittedon"ApplicationforUNSNumberAssignment"forms(Figure1).CopiesoftheseareavailablefromanyUNSnumberassigningoffice(Table3)orfacsimilesmaybemadeoftheoneherein.5.5Allinstructionsontheprintedapplicationformshouldbereadcarefullyandallinformationprovidedasindicated.(See6.5.)5.6TofurtherassistinassigningUNSnumbers,therequesterisencouragedtosuggestapossibleUNSnumberineachrequest,givingappropriateconsiderationtoanyexistingnumberpresentlyusedbyatradeassociation,standardssociety,producer,oruser.5.7EachcompletedapplicationformshallbesenttotheUNSnumberassigningofficehavingresponsibilityfortheseriesofnumberswhichappearstomostcloselyrelatetothematerialdescribedontheform(Table3).SAEJ1086andASTME527RevisedJUL95-7-FIGURE1A—APPLICATIONFORMFORUNSNUMBERASIGNMENT(FRONT)SAEJ1086andASTME527RevisedJUL95-8-FIGURE1B—APPLICATIONFORMFORUNSNUMBERASSIGNMENT(BACK)SAEJ1086andASTME527RevisedJUL95-9-6.Notes6.1Theterms"commercialstanding,""productionusage,"andothers,areintendedtoportrayamaterialinactiveindustrialuse,althoughtheactualamountofsuchusewilldepend,amongotherthings,uponthetypeofmaterials.(Obviouslygoldwillnotbeusedinthesame"tonnages"ashotrolledsteel.)Differentstandardizinggroupsusedifferentcriteriatodefinethestatusthatamaterialhastoattainbeforeastandardnumberwillbeassignedtoit.Forinstance,theAmericanIronandSteelInstituterequiresforstainlesssteels"twoormoreproducerswithcombinedproductionof200tonsperyearforatleasttwoyears";theCopperDevelopmentAssociationrequiresthatthematerialbe"incommercialuse(withouttonnagelimits)";theAluminumAssociationrequiresthatthealloymustbe"offeredforsale(notnecessarilyincommercialuse)";theSAEAerospaceMaterialsDivisioncallsfor"repetitiveprocurementbyatleasttwousers."Whileitisapparentthatnohardandfastusagedefinitioncanbesetupforanall-encompassingsystem,theUNSnumbersareintendedtoidentifymetalsandalloysthatareinmoreorlessregularproductionanduse.AUNSnumberwillnotordinarilybeissuedforamaterialwhichhasjustbeenconceivedorwhichisstillinonlyexperimentaltrial.6.2OrganizationsthatissuespecificationsshouldreporttoappropriateUNSnumberassigningoffices(see4.1.2)anyspecificationchangeswhichaffectdescriptionsshowninpublishedUNSlistings.6.3Thisarrangementofalphanumericsixcharacternumbersisacompromiseofthethinkingthatidentificationnumbersshouldindicatemanycharacteristicsofthematerial,andthethinkingthatnumbersshouldbeshortanduncomplicatedtobewidelyacceptedandused.6.4InassigningUNSnumbers,andconsequentlyinsearchingcompletelistingsofnumbers,thepredominantelementofthemetaloralloyusuallydeterminestheprefixletteroftheseriestowhichitisassigned.Incertaininstanceswherenooneelementpredominates,arbitrarydecisionsaremadeastowhatprefixlettertouse,dependingupontheproducingindustryandotherfactors.6.5Theapplicationformisdesignedtoservealsoasadatainputsheettofacilitateprocessingeachrequestthroughtofinalprintoutofthedataonelectronicdataprocessingequipmentandtominimizetranscriptionerrorsatnumber-assigningofficesanddataprocessingcenters.6.6OnesuchlistingisASTMPublicationNo.DS-56andSAEHandbookSupplementHS-1086(ajointASTM-SAEpublication).6.7MarginalIndicia—Thechangebar(l)locatedintheleftmarginisfortheconvenienceoftheuserinlocatingareaswheretechnicalrevisionshavebeenmadetothepreviousissueofthereport.An(R)symboltotheleftofthedocumenttitleindicatesacompleterevisionofthereport.PREPAREDBYTHESAEUNIFIEDNUMBERINGSYSTEMADVISORYBOARDSAEJ1086andASTME527RevisedJUL95Rationale—TheonlychangetothedocumentwasinTable3—CopperDevelopmentAssociation’saddresschanged.RelationshipofSAEStandardtoISOStandard—Notapplicable.Application—ThisSAERecommendedPracticedescribesaunifiednumberingsystem(UNS)formetalsandalloyswhichhavea"commercialstanding"(see6.1),andcoverstheprocedurebywhichsuchnumbersareassigned.Section2describesthesystemofalphanumericdesignationsor"numbers"establishedforeachfamilyofmetalsandalloys.Section3outlinestheorganizationestablishedforadministeringthesystem.Section4describestheprocedureforrequestingnumberassignmenttometalsandalloysforwhichUNSnumbershavenotpreviouslybeenassigned.TheUNSprovidesameansofcorrelatingmanynationallyusednumberingsystemscurrentlyadministeredbysocieties,tradeassociations,andindividualusersandproducersofmetalsandalloys,therebyavoidingconfusioncausedbyuseofmorethanoneidentificationnumberforthesamematerial;andbytheoppositesituationofhavingthesamenumberassignedtotwoormoreentirelydifferentmaterials.Itprovides,also,theuniformitynecessaryforefficientindexing,recordkeeping,datastorageandretrieval,andcrossreferencing.AUNSnumberisnotinitselfaspecification,sinceitestablishesnorequirementsforform,condition,quality,etc.Itisaunifiedidentificationofmetalsandalloysforwhichcontrollinglimitshavebeenestablishedinspecificationspublishedelsewhere.(See6.2.)ReferenceSectionSAEHS-1086—MetalsandAlloysintheUnifiedNumberingSystemASTME527—PracticeforNumberingMetalsandAlloys(UNS)ASTMPublicationNo.DS-56—MetalsandAlloysandtheUnifiedNumberingSystemDevelopedbytheSAEUnifiedNumberingSystemAdvisoryBoard