raisingstandardsworldwide™NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBSIBritishStandardsUnfiredpressurevessels—Part2:MaterialsBSEN13445-2:2009BSEN13445-2:2009BRITISHSTANDARDNationalforewordThisBritishStandardistheUKimplementationofEN13445-2:2009.ItsupersedesBSEN13445-2:2002+A2:2006whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePVE/1,Pressurevessels.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.©BSI2009ISBN9780580655609ICS23.020.30CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon32009.September0AmendmentsissuedsincepublicationDateTextaffectedEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN13445-2July2009ICS23.020.30SupersedesEN13445-2:2002EnglishVersionUnfiredpressurevessels-Part2:MaterialsRécipientssouspressionnonsoumisàlaflamme-Partie2:matériauxUnbefeuerteDruckbehälter-Teil2:WerkstoffeThisEuropeanStandardwasapprovedbyCENon30June2009.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:AvenueMarnix17,B-1000Brussels©2009CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN13445-2:2009:EEN13445-2:2009(E)Issue1(2009-07)2ContentsPageForeword..............................................................................................................................................................31Scope......................................................................................................................................................42Normativereferences............................................................................................................................43Terms,definitions,symbolsandunits................................................................................................63.1Termsanddefinitions...........................................................................................................................63.2Symbolsandunits.................................................................................................................................74Requirementsformaterialstobeusedforpressure-bearingparts.................................................94.1General....................................................................................................................................................94.2Specialprovisions..............................................................................................................................114.2.1Specialproperties...............................................................................................................................114.2.2Designtemperatureabove20°C.......................................................................................................114.2.3Preventionofbrittlefracture.............................................................................................................124.2.4Designpropertiesinthecreeprange...............................................................................................124.2.5Specificrequirementsforsteelsforfasteners................................................................................124.3Technicaldeliveryconditions...........................................................................................................134.3.1EuropeanStandards...........................................................................................................................134.3.2EuropeanApprovalforMaterials......................................................................................................134.3.3Particularmaterialappraisals............................................................................................................134.3.4Cladproducts.......................................................................................................