BS EN 1668-1997 Welding consumables Ð Rods, wires

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||BRITISHSTANDARDBSEN1668:1997TheEuropeanStandardEN1668:1997hasthestatusofaBritishStandardICS25.160.20NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWWeldingconsumablesÐRods,wiresanddepositsfortungsteninertgasweldingofnonalloyandfinegrainsteelsÐClassificationThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorBoard,waspublishedundertheauthorityoftheStandardsBoardandcomesintoeffecton15December1997©BSI1997ISBN0580289214BSEN1668:1997AmendmentsissuedsincepublicationAmd.No.DateTextaffectedNationalforewordThisBritishStandardistheEnglishlanguageversionofEN1668:1997.ItpartiallysupersedesBS2901:Part1:1983,whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeWEE/39,Weldingconsumables,whichhastheresponsibilityto:±aidenquirerstounderstandthetext;±presenttotheresponsibleEuropeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;±monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSIStandardsCatalogueunderthesectionentitled`InternationalStandardsCorrespondenceIndex',orbyusingthe`Find'facilityoftheBSIStandardsElectronicCatalogue.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to6,aninsidebackcoverandabackcover.CENEuropeanCommitteeforStandardizationComiteÂEuropeÂendeNormalisationEuropaÈischesKomiteefuÈrNormungCentralSecretariat:ruedeStassart36,B-1050Brussels©1997CENÐAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN1668:1997EEUROPEANSTANDARDEN1668NORMEEUROPEÂENNEEUROPAÈISCHENORMAugust1997ICS25.160.20Descriptors:Welding,arcwelding,fillerwire,fillermetal,steels,unalloyedsteels,characteristics,chemicalcomposition,mechanicalproperties,classificationsEnglishversionWeldingconsumablesÐRods,wiresanddepositsfortungsteninertgasweldingofnonalloyandfinegrainsteelsÐClassificationProduitsconsommablespourlesoudageÐBaguettes,filsd'apportetdeÂpoÃtspourlesoudagesousatmospheÁreinerteaveceÂlectrodereÂfractairedesaciersnonallieÂsetdesaciersaÁgrainsfinsÐClassificationSchweibzusaÈtzeÐStaÈbe,DraÈhteundSchweibgutzumWolfram-SchutzgasschweibenvonunlegiertenStaÈhlenundFeinkornstaÈhlenÐEinteilungThisEuropeanStandardwasapprovedbyCENon1997-07-24.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.Page2EN1668:1997©BSI1997ForewordThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC121,Welding,thesecretariatofwhichisheldbyDS.ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextorbyendorsement,atthelatestbyFebruary1998,andconflictingnationalstandardsshallbewithdrawnatthelatestbyFebruary1998.AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.ContentsPageForeword2Introduction31Scope32Normativereferences33Classification34Symbolsandrequirements34.1Symbolfortheproduct/process34.2Symbolforstrengthandelongationofall-weldmetal34.3Symbolforimpactpropertiesofall-weldmetal44.4Symbolforthechemicalcompositionofrods/wires45Mechanicaltests45.1General45.2Preheatingandinterpasstemperature45.3Weldingconditions46Chemicalanalysis57Technicaldeliveryconditions58Designation5AnnexA(informative)Bibliography6Page3EN1668:1997©BSI1997IntroductionThisstandardproposesaclassificationinordertodesignaterodsandwiresintermsoftheyieldstrength,tensilestrengthandelongationoftheall-weldmetal.Theratioofyieldtotensilestrengthofweldmetalisgenerallyhigherthanthatofparentmetal.Usersshouldnotethatmatchingweldmetalyieldstrengthtoparentmetalyieldstrengthwillnotnecessarilyensurethattheweldmetaltensilestrengthmatchesthatoftheparentmaterial.Wheretheapplicationrequiresmatchingtensilestreng