1、BRITISH STANDARD AEROSPACE SERIES BS EN 3957:2001 Aerospace series Silver base alloy AG-B14001 (AgCu42Ni2) Filler metal for brazing Powder or paste The European Standard EN 3957:2001 has the status of a British Standard ICS 49.025.15 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT
2、 LAWBS EN 3957:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 BSI 07-2001 ISBN 0 580 37722 9 National foreword This British Standard is t
3、he official English language version of EN 3957:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/61, Inspection and testing requirements for aerospace metallic materials, which has the responsibility to: A list of organizations represented on this committee can
4、be obtained on request to its secretary. Cross-references The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the B
5、SI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid en
6、quirers 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 the UK. Summary of pages This d
7、ocument 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. Date CommentsEUROPEANSTANDARD NO
8、RMEEUROPENNE EUROPISCHENORM EN3957 June2001 ICS49.025.15 Englishversion AerospaceseriesSilverbasealloyAGB14001(AgCu42Ni2) FillermetalforbrazingPowderorpaste SriearospatialeAlliagebaseargentAGB14001 (AgCu42Ni2)MtaldapportdebrasagePoudreoupte LuftundRaumfahrtSilberbasislegierungAGB14001 (AgCu42Ni2)Har
9、tlotinFormvonPulveroderPaste ThisEuropeanStandardwasapprovedbyCENon19April2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernin
10、gs uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesam
11、estatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMA
12、LISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3957:2001EPage2 EN3957:2001 Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufa
13、cturers (AECMA). AfterinquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherby
14、publicationofanidentical textorbyendorsement,atthelatestbyDecember2001,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2001. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belg
15、ium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom.Page3 EN3957:2001 0 Introduction ThisstandardispartoftheseriesofENmetallicmaterialstandardsforaerospaceapplications.Thegeneral organisati
16、onofthisseriesisdescribedinEN4258. ThisstandardhasbeenpreparedinaccordancewithEN45006. 1 Scope Thisstandardspecifiestherequirementsrelatingto: SilverbasealloyAGB14001(AgCu42Ni2) Fillermetalforbrazing Powderorpaste foraerospaceapplications. 2 Normativereferences ThisEuropeanStandardincorporatesbydate
17、dorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevisi
18、on.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN 2043 AerospaceseriesMetallicmaterialsGeneralrequirementsforsemifinishedproduct qualification(excludingforgingsandcastings) 1) EN3875 AerospaceseriesMetallicmaterialsFillermetalforbrazingTechnicalspecification 1) EN 4258 Ae
19、rospaceseriesMetallicmaterialsGeneralorganizationofstandardizationLinks betweentypesofENstandardsandtheiruse EN 45006 AerospaceseriesMetallicmaterialsRulesfordraftingandpresentationofmaterial standardsPart6:Specificrulesforfillermetalsforbrazing 1) 1) PublishedasAECMAPrestandardatthedateofpublicatio
20、nofthisstandardPage4 EN3957:2001 1 Materialdesignation SilverbasebrazealloyAGB14001(AgCu42Ni2) Others Element Si P Cu Ni Al Bi Cd Pb Total Ag min. 41,0 1,50 55,0 2 Chemical composition a % max. 0,05 80*) 43,0 2,50 10*) 0,030 0,030 0,025 0,15 57,0 3 Methodofmelting Airorinertgasmelted 4.1 Form Powder
21、 Paste 4.2 Methodofproduction Waterorinertgasatomisedandsieved Waterorinertgasatomisedandsieved andmixedwithabinder 4.3 Limitdimension(s) mm 5 Technicalspecification EN3875 Deliverycondition Asmanufactured Asmanufactured 6.1 Heattreatment 6.2 Deliveryconditioncode UU Usecondition Deliveryconditionor
22、mixedwithabinder Deliverycondition 7 Heattreatment Characteristics 8.1 Testsample(s) 8.2 Testpiece(s) 8.3 Heattreatment 9 Dimensionsconcerned mm 10 Thicknessofcladdingon eachface % 11 Directionoftestpiece 12 Temperature C 13 Proofstress R p0,2 MPa 14 Strength R m MPa 15 Elongation A % 16 T Reduction
23、ofarea Z % 17 Hardness 18 Shearstrength R c MPa 19 Bending k 20 Impactstrength 21 Temperature C 22 Time h 23 Stress a MPa 24 Elongation a % 25 Rupturestress R MPa 26 C Elongationat rupture A% 27 Notes(seeline98) *) aPage5 EN3957:2001 44 Externaldefects Powder Paste SeeEN3875 SeeEN3875 53 Thermalanal
24、ysis (Differentialthermalanalysis) 7 Liquidus: 895C Solidus: 780C 76 Wettability (Fusiontest) SeeEN3875 78 Metallicalloycontent SeeEN3875 7 Powder Paste 84% metallicalloycontent 90% 82 Batchuniformity (Materialverification) SeeEN3875 83 Particlesize (Sieveanalysis) SeeEN3875 95 Markinginspection See
25、EN3875 96 Dimensionalinspection SeeEN3875 98 Notes *) p.p.m. a Thechemicalcompositionreferstothemetallicalloycontent. 99 Typicaluse Joiningcarbon,lowalloyandnonheattreatableausteniticsteels.Page6 EN3957:2001 100 Productqualification SeeEN2043 Qualificationprogrammetobeagreedbetweenmanufacturerandpur
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