SAE-AMS2770J-2011

__________________________________________________________________________________________________________________________________________SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2011SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:[phone](insideUSAandCanada)Tel:[phone](outsideUSA)Fax:[phone]Email:[e-mail]:://(3.2.5.1),tightenscontrolsoverhydrogeninducedporosity(3.3.3),revisespHrequirementsforwater/polymersolutions(3.4.9.1)introducesanewrequirementforhardnessandconductivityafterheattreatment(3.9),revisesrecords(4.2)andinspectionrequirements(4.3),addsnotestoTables4and7,andrevisesheattreatmentparameters(seevarioustables).1.SCOPE1.1PurposeThisspecificationspecifiestheengineeringrequirementsforheattreatment,bypartfabricators(users)ortheirvendorsorsubcontractors,ofparts(See8.8.1).Italsocoversheattreatmentbywarehousesordistributorsconvertingrawmaterialfromonetempertoanothertemper(See1.3and8.5).Itcoversthefollowingaluminumalloys:1100,2004,2014,2017,2024,2098,2117,2124,2219,2224,3003,5052,6013,6061,6063,6066,6951,7049,7050,7075,7149,7178,7249,74751.1.1Thisspecificationmaybeusedforheattreatmentofpartsmadefromotheralloysprovidedthetemperature,temperatureuniformitytolerances,times,andquenchantsarespecifiedorapprovedbythecognizantengineeringorganization(See8.8.9).1.2CastingsandpartsmadefromcastingsshallbeheattreatedinaccordancewithAMS2771.1.3TemperConversionWhenawarehouse,distributororsimilarorganizationconvertsrawmaterialtoadifferenttemper,itshallbeheattreatedandtestedtotherequirementsofthisspecification.Themarking,testingandreportingrequirementsshallalsobeinaccordancewithAMS2772andtherawmaterialspecification.2.APPLICABLEDOCUMENTSTheissueofthefollowingdocumentsineffectonthedateofthepurchaseorderformsapartofthisspecificationtotheextentspecifiedherein.Thesuppliermayworktoasubsequentrevisionofadocumentunlessaspecificdocumentissueisspecified.Whenthereferenceddocumenthasbeencancelledandnosupersedingdocumenthasbeenspecified,thelastpublishedissueofthatdocumentshallapply.SAEAMS2770JPage2of212.1SAEPublicationsAvailablefromSAEInternational,400CommonwealthDrive,Warrendale,PA15096-0001,Tel:[phone](insideUSAandCanada)or724-776-4970(outsideUSA),:610-832-9585,(andtheCalculationofDynamicViscosity)3.TECHNICALREQUIREMENTS3.1Equipment3.1.1PyrometryShallconformtoAMS2750.3.1.1.1SolutionheattreatingfurnacesshallbeaminimumofClass2(±10°For±6°C).3.1.1.2AMS2750furnaceclassificationsforagingshallbeasfollows:3.1.1.2.1Agingovensoperatingatorbelow300°F(149°C)shallbeaminimumofClass2(±10°For±6°C).3.1.1.2.2Foralloys7049,7149,7249and7050,agingovensoragingfurnacesoperatingabove300°FshallbeaminimumofClass1(±5°For±3°C).3.1.1.2.3Foragingallotheralloys,allovensorfurnacesoperatingabove300°F(149°C)shallbeaminimumofClass2(±10°For±6°C).3.1.1.3AnnealingandstressrelievingfurnacesshallbeaminimumofClass5(±25°For±14°C).3.1.2Furnaces3.1.2.1HeatingMediaShallbeair,moltensaltbath,oilbath,orfluidizedbed.Theproductsofcombustionandothermaterialsthatcouldcontaminatepartsshallnotcomeintocontactwithpartsduringsolutionheattreating,annealingorstressrelieving.Electricalheatingelementsandradianttubesshallbeshieldedtopreventpartsfrombeingexposedtodirectradiation.Shieldconstructionandplacementshallbesuchastopreventpartsfrombeingexposedtore-radiationofheatfromelectricalelementsorradianttubes.Compositionandmaintenanceofsaltbathsandfluidizedbedsshallbesuchastopreventattackoftheparts.--``,,``,,,`,`,,`,,`,,``,,```,`-`-`,,`,,`,`,,`---SAEAMS2770JPage3of213.1.2.2TemperatureUniformityTestRecoveryRequirements(See8.8.11)Forallsolutionheattreatandagingfurnaces,thelagtimebetweenrecoveryofthefirsttest