1、BRITISH STANDARD BS EN 1780-3:2002 Aluminium and aluminium alloys Designation of alloyed aluminium ingots for remelting, master alloys and castings Part 3: Writing rules for chemical composition The European Standard EN 1780-3:2002 has the status of a British Standard ICS 77.150.10 BS EN 1780-3:2002
2、 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 40657 1 National foreword This British Standard
3、 is the official English language version of EN 1780-3:2002. It supersedes BS EN 1780-3:1997 which is withdrawn.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 on
4、 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 u
5、sing 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 immunity
6、 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 in
7、the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, 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. D
8、ate CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN17803 October2002 ICS77.150.10 SupersedesEN17803:2002 Englishversion AluminiumandaluminiumalloysDesignationofalloyed aluminiumingotsforremelting,masteralloysandcastingsPart 3:Writingrulesforchemicalcomposition Aluminiumetalliagesdaluminium
9、Systmede dsignationapplicableauxlingotspourrefusionen aluminiumalli,auxalliagesmresetauxproduitsmouls Partie3:Rglesdcriturepourlacompositionchimique AluminiumundAluminiumlegierungenBezeichnungvon legiertemAluminiuminMasseln,Vorlegierungenund GussstckenTeil3:Schreibregelnfrdiechemische Zusammensetzun
10、g ThisEuropeanStandardwasapprovedbyCENon2September2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standards
11、maybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official ve
12、rsions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCH
13、ESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN17803:2002EEN17803:2002(E) 2 Contents page 1 Scope 4 2 Normativereferences 4 3 Chemicalcompositionlimits . .4 4 Writingrules . 4 5
14、Alloydesignations .4 6 Sequenceofelementsfortheindicationofthechemicalcomposition.5 6.1 Alloyedaluminiumingotsforremeltingandcastings. 5 6.2 Masteralloys . .5 7 Roundingrulesfordeterminationofcompliance .5 Bibliography 6EN17803:2002(E) 3 Foreword Thisdocument(EN17803:2002)hasbeenpreparedbyTechnicalC
15、ommitteeCEN/TC132,“Aluminiumand aluminiumalloys“,thesecretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyApril2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby April2003. Within
16、itsprogrammeofwork,TechnicalCommitteeCEN/TC132entrustedCEN/TC132/WG1“Liquidmetal, unalloyedandalloyedingots “topreparethefollowingstandard: EN17803, AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsforremelting,masteralloys andcastingsPart3:Writingrulesforchemicalcomposition Thisdocumen
17、tsupersedesEN17803:1996 “AluminiumandaluminiumalloysDesignationofalloyedaluminium ingotsforremelting,masteralloysandcastingsPart3:Writingrulesforchemicalcomposition Thedifferencetotheformerversionisthatunalloyedaluminiumisremovedfromthescopeandprovisionsdealing withunalloyedaluminiumaredeleted. Thep
18、rovisionsaboutthewritingrulesofunalloyedaluminiumhavebeentransferredintotherevisedversionof EN576. ThisEuropeanStandardEN1780,“ AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsfor remelting,masteralloysandcastings” ,comprisesofthefollowingparts: Part1:Numericaldesignationsystem Part2:C
19、hemicalsymbolbaseddesignationsystem Part3:Writingrulesforchemicalcomposition AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Irel
20、and,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN17803:2002(E) 4 1Scope ThisEuropeanStandardspecifiesthewritingrulesforchemicalcompositionofalloyedaluminiumingotsfor remelting,masteralloysandcastings. Writingrulesforunalloyedaluminiumarespecifiedi
21、nEN576. Thefivefigurenumericalandthechemicalsymbolbaseddesignationsystemsofmaterialsarespecifiedin EN17801andEN17802,respectively. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesin
22、thetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN575, Alumi
23、niumandaluminiumalloysMasteralloysproducedbymeltingSpecifications. EN1676, AluminiumandaluminiumalloysAlloyedingotsforremeltingSpecifications. EN1706, AluminiumandaluminiumalloysCastingsChemicalcompositionandmechanicalproperties. 3 Chemicalcompositionlimits Thechemicalcompositionlimitsarespecifiedin
24、EN575,EN1676andEN1706. 4 Writingrules Standardlimitsforalloyingelementsandimpuritiesaregenerallyexpressedinpercentagebymasstothefollowing places(exceptincertaincasesasspecifiedinthestandardslistedinclause3): a) lessthan0,001%. 0,000X; b) 0,001%throughlessthan0,01% . 0,00X; c) 0,01%throughlessthan0,1
25、0% . 0,0X; d) 0,10%through0,55%. 0,XX; e) over0,55% . 0,X;X,X;XX,X. 5 Alloydesignations Boththefivefigurebaseddesignationsandthechemicalsymbolbaseddesignationsareusedinthetables appendedtothespecificEuropeanStandards(seeclause3).EN17803:2002(E) 5 6 Sequenceofelementsfortheindicationofthechemicalcomp
26、osition 6.1 Alloyedaluminiumingotsforremeltingandcastings Thelimitsforthealloyingelementsandimpuritiesforalloyedaluminiumingotsforremelting andcastingsshallbe expressedinthefollowingsequence:Silicon,Iron,Copper,Manganese,Magnesium,Chromium,Nickel,Zinc, Lead,Tin,Titanium,otherelementseach,otherelemen
27、tstotal,Aluminium. 6.2 Masteralloys Thelimitsforthealloyingelementsandimpuritiesformasteralloysshallbeexpressedinthefollowingsequence: Silicon,Iron,Copper,Manganese,Magnesium,Chromium,Nickel,Zinc,.,Titanium,otherelementseach,other elementstotal,Aluminium.Thelimitsforadditionalalloyingelementsandimpu
28、ritiesshallbeinsertedin alphabeticalorderoftheirchemicalsymbolsbetweenzincandtitanium,orspecifiedinfootnotes. Aluminiumshallbespecifiedasaremainderforaluminiumalloys. 7 Roundingrulesfordeterminationofcompliance Inrecordingchemicalanalysistestresults,thenumberrepresentingtheresultforanyelementspecifi
29、edinthis standardshallbeexpressedtothesamenumberofdecimalplacesasthecorrespondingnumberinthereference standard. Thefollowingroundingrulesshallbeusedfordeterminationofcompliancewiththisstandard: a) whenthefigureimmediatelyafterthelastfiguretoberetainedislessthan5,thelastfiguretoberetained remainsunch
30、anged; b) whenthefigureimmediatelyafterthelastfiguretoberetainedisgreaterthan5,orequalto5andfollowedby atleastonefigureotherthanzero,thelastfiguretoberetainedisincreasedbyone; c) whenthefigureimmediatelyafterthelastfiguretoberetainedisequalto5andfollowedbyzerosonly,thelast figuretoberetainedremainsu
31、nchangedifevenandisincreasedbyoneifodd.EN17803:2002(E) 6 Bibliography 1 EN576, AluminiumandaluminiumalloysUnalloyedaluminiumingotsforremeltingSpecifications. 2EN 17801, AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsforremelting, masteralloysandcastingsPart1:Numericaldesignationsystem
32、. 3EN 17802, AluminiumandaluminiumalloysDesignationofalloyedaluminiumingotsforremelting, masteralloysandcastingsPart2:Chemicalsymbolbaseddesignationsystem.blankBS EN 1780-3:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsibl
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