1、BRITISH STANDARD BS EN 1780-2:2002 Aluminium and aluminium alloys Designation of alloyed aluminium ingots for remelting, master alloys and castings Part 2: Chemical symbol based designation system The European Standard EN 1780-2:2002 has the status of a British Standard ICS 77.150.10 BS EN 1780-2:20
2、02 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 30 October 2002 BSI 30 October 2002 ISBN 0 580 40655 5 National foreword This British Standa
3、rd is the official English language version of EN 1780-2:2002. It supersedes BS EN 1780-2:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys, which has the responsibility to: A list of organizations represented
4、on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by
5、 using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immuni
6、ty from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them i
7、n the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.
8、 Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN17802 October2002 ICS77.150.10 SupersedesEN17802:2002 Englishversion AluminiumandaluminiumalloysDesignationofalloyed aluminiumingotsforremelting,masteralloysandcastingsPart 2:Chemicalsymbolbaseddesignationsystem Aluminiumetalliagesdalumi
9、niumSystmede dsignationapplicableauxlingotspourrefusionen aluminiumalli,auxalliagesmresetauxproduitsmouls Partie2:Systmededsignationbassurlessymboles chimiques AluminiumundAluminiumlegierungenBezeichnungvon legiertemAluminiuminMasseln,Vorlegierungenund GussstckenTeil2:Bezeichnungssystemmit chemische
10、nSymbolen ThisEuropeanStandardwasapprovedbyCENon2September2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational s
11、tandardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe off
12、icial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION E
13、UROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN17802:2002EEN17802:2002(E) 2 Contents page 1 Scope 4 2 Normativereferences 4 3 Basisofcodification. .4 4 Rulesforthecodedde
14、signationofaluminiumalloysandmasteralloys5 4.1 General5 4.2 Rulesfordistinguishingbetweentwoalloysofsimilarcomposition 5 4.3 Specialapplicationformasteralloys . .6 AnnexA (normative) Internationalchemicalsymbols 7 Bibliography 8EN17802:2002(E) 3 Foreword Thisdocument(EN17802:2002)hasbeenpreparedbyTe
15、chnicalCommitteeCEN/TC132,“Aluminiumand aluminiumalloys“,thesecretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyApril2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby April2003
16、. Withinitsprogrammeofwork,TechnicalCommitteeCEN/TC132entrustedCEN/TC132/WG1“Liquidmetal, unalloyedandalloyedingots “topreparethefollowingstandard: EN17802, AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsforremelting,masteralloys andcastingsPart2:Chemicalsymbolbaseddesignationsystem.
17、ThisdocumentsupersedesEN17802:1996“AluminiumandaluminiumalloysDesignationofunalloyedand alloyedaluminiumingotsforremelting,masteralloysandcastingsPart2:Chemicalsymbolbaseddesignation system“. Inthisrevisededition,unalloyedaluminiumingotshavebeenremovedfromthescopeandprovisionsforunalloyed aluminiumi
18、ngotshavebeendeleted. Theprovisionsaboutthewritingrulesofunalloyedaluminiumhasbeentransferredintotherevisedversionof EN576. ThisEuropeanStandardEN1780,“ AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsfor remelting,masteralloysandcastings ”,comprisesofthefollowingparts: Part1:Numerical
19、designationsystem Part2:Chemicalsymbolbaseddesignationsystem Part3:Writingrulesforchemicalcomposition AnnexAisnormative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark
20、,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN17802:2002(E) 4 1Scope ThisEuropeanStandardspecifiesachemicalsymbolbaseddesignationsystemforaluminiumalloysandmaster alloysasspecifiedintherelevantEuropea
21、nStandards.Itappliestoingotsforremeltingandtocastings. AdesignationsystemforunalloyedaluminiumisspecifiedinEN576. AnalternativenumericaldesignationsystemisspecifiedinEN17801.Writingrulesforchemicalcompositionare specifiedinEN17803. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundat
22、edreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Foru
23、ndatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN575, AluminiumandaluminiumalloysMasteralloysproducedbymeltingSpecifications. EN1676, AluminiumandaluminiumalloysAlloyedingotsforremeltingSpecifications. EN1706, AluminiumandaluminiumalloysCastingsChemicalcompo
24、sitionandmechanicalproperties. EN17803:2002, AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsforremelting,master alloysandcastingsPart3:Writingrulesforchemicalcomposition. 3 Basisofcodification Thedesignationofaluminiumalloysandmasteralloysshallbebasedontheirchemicalsymbols,usuallyfoll
25、owed bynumbersindicatingthenominalcontentoftheconsideredalloyingelement. Thechemicalsymbolsusedshallbethoseoftheinternationalnomenclature(seeAnnexA). Thenumbersorfiguresindicatingthenominalcontentofthealloyingelementinquestionshallbebasedonthe chemicalcompositionlimitsspecifiedinclause3ofEN17803:200
26、2. Preferablyalldesignationscomplyingwiththiscodificationshouldbeputwithinsquarebrackets,followingthefive figuredesignation.Ifonlythechemicalsymbolbaseddesignationisused,thenitshallhavetheprefixEN,followed byablankspace,thentheletterArepresentingaluminiumandtheletterBrepresentingingotsforremelting,o
27、rthe letterCrepresentingcastings,ortheletterMrepresentingmasteralloys. Thisletter(B,CorM)shallbeseparatedfromthefollowingdesignationbyahyphen. EXAMPLE ENAB45400AlSi5Cu3orENABAlSi5Cu3 ThedesignationscurrentlyinuseandthecorrespondingchemicalcompositionslimitsarespecifiedinEN575, EN1676andEN1706. Assig
28、nmentsorrevisionsofdesignationsshallbeapprovedbyTechnicalCommitteeCEN/TC132.EN17802:2002(E) 5 4 Rulesforthecodeddesignationofaluminiumalloysandmasteralloys 4.1General AnalloyshallbedesignatedbythesymbolAl,followedbythesymbolsofthemainelementorelements.These symbolsareusuallyfollowedbynumberswhichexp
29、ressthemasspercentcontentsoftheconsideredelements,in accordancewiththerulesshownin4.2.ThesymbolAlshallbeseparatedbyablankspacefromtheremainderof thedesignation. Whenseveralalloyingelementsaredeemedtoberequiredinthedesignation,theyshallbearrangedinorderof decreasingnominalcontents. EXAMPLE1 ENABAlSi5
30、Cu3 Itthesecontentsareequal,thealloyingelementsshallbearrangedinthealphabeticalorderofthesymbols,as specifiedinAnnexA. EXAMPLE2 ENABAlSi12CuMgNi Thechemicalsymbolsforalloyingelementsshallberestrictedtoamaximumoffourelements. EXAMPLE3 ENABAlSi12CuMgNi EXAMPLE4 ENACAlSi12CuMgNi EXAMPLE5 ENAMAlSr10Ti1B
31、0,2 4.2 Rulesfordistinguishingbetweentwoalloysofsimilarcomposition 4.2.1General Thesimplestpossibledesignationshallbeused. Inthecaseofalloyswithsimilarcompositions,thefollowingadditionaldesignationshallbeusedfordistinguishing betweenalloysindecreasingpriority: 4.2.2 Distinguishingbynominalcontent Th
32、ealloyingelementshallbedistinguishedbythenominalcontent(middleoftherange)roundedtothenearest integeror,ifnecessary,tothenearest0,5,or,forcontentslessthan1%tothenearest0,1. EXAMPLE1 ENABAlSi7Mg0,3 EXAMPLE2 ENABAlSi7Mg0,6. 4.2.3 Distinguishingbymainimpurities Themainimpurityorimpuritiesshallbeaddedinp
33、arentheses. EXAMPLE1 ENABAlSi10Mg(Cu) EXAMPLE2 ENABAlSi10Mg(Fe) EXAMPLE3 ENABAlSi9Cu3(Fe)(Zn)EN17802:2002(E) 6 4.2.4 Distinguishingbyasuffix Iftheaboveprovisionisnotsufficientfordifferentiatingbetweenseveralalloys,asuffixshallbeused:(a),(b), (c),accordingtothedateofregistration.Thissuffixshallconsis
34、tofalowercaseletterplacedinparenthesesto avoidconfusionwiththechemicalsymbols. EXAMPLE1 ENABAlSi12(a) EXAMPLE2 ENABAlSi12(b) 4.3 Specialapplicationformasteralloys Asuffix(A)or(B)shallbeusedattheendofthechemicaldesignation,accordingtothelevelofimpurities,i.e.: (A)formasteralloywithlowlevelofimpuritie
35、s; (B)formasteralloywithhighlevelofimpurities.EN17802:2002(E) 7 Annex A (normative) Internationalchemicalsymbols Aluminium Al Molybdenum Mo Silver Ag Sodium Na Boron B Niobium Nb Beryllium Be Nickel Ni Bismuth Bi Phosphorus P Calcium Ca Lead Pb Cadmium Cd RareEarths RE Cerium Ce Antimony Sb Cobalt C
36、o Silicon Si Chromium Cr Tin Sn Copper Cu Strontium Sr Iron Fe Titanium Ti Gallium Ga Vanadium V Lithium Li Zinc Zn Magnesium Mg Zirconium Zr Manganese MnEN17802:2002(E) 8 Bibliography 1 EN576, AluminiumandaluminiumalloysUnalloyedaluminiumingotsforremeltingSpecifications. 2EN 17801, Aluminiumandalum
37、iniumalloysDesignationofalloyedaluminiumingotsforremelting, masteralloysandcastingsPart1:Numericaldesignationsystem.blankBS EN 1780-2:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It p
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