AMS4315

AEROSPACEMATERIALSPECIFICATIONAluminumAlloySheetandPlate5.6Zn-2.5Mg-1.6Cu-0.23Cr7075:(-T76Sheet,-T7651Plate)SolutionandPrecipitationHeatTreated(CompositionSimilartoUNSR97075)SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2005SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:[phone](insideUSAandCanada)Tel:[phone](outsideUSA)Fax:[phone]Email:[e-mail]:®IssuedJUL20051.SCOPE:1.1Form:Thisspecificationcoversanaluminumalloyintheformofsheetandplate.1.2Application:Thisproducthasbeenusedtypicallyforstructuralapplicationsrequiringmaterialwithhighstrengthandresistancetoexfoliation-corrosion,butusageisnotlimitedtosuchapplications.1.2.1Certaindesignandprocessingproceduresmaycausetheseproductstobecomesusceptibletostress-corrosioncracking;ARP823recommendspracticestominimizesuchconditions.2.APPLICABLEDOCUMENTS:Theissueofthefollowingdocumentsineffectonthedateofthepurchaseorderformsapartofthisspecificationtotheextentspecifiedherein.Thesuppliermayworktoasubsequentrevisionofadocumentunlessaspecificdocumentissueisspecified.Whenthereferenceddocumenthasbeencanceledandnosupersedingdocumenthasbeenspecified,thelastpublishedissueofthatdocumentshallapply.SAE-2-AMS43152.1SAEPublications:AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001or:AvailablefromASTM,100BarrHarborDrive,WestConshohocken,PA19428-2959or(EXCOTest)ASTMG47DeterminingSusceptibilitytoStress-CorrosionCrackingofHighStrengthAluminumAlloyProducts2.3ANSIPublications:AvailablefromANSI,25West43rdStreet,NewYork,NY10036or(Metric)SAE-3-AMS43153.TECHNICALREQUIREMENTS:3.1Composition:ShallconformtothepercentagesbyweightshowninTable1,determinedinaccordancewithAMS2355.TABLE1-CompositionElementminmaxSilicon--0.40Iron--0.50Copper1.22.0Manganese--0.30Magnesium2.12.9Chromium0.180.28Zinc5.16.1Titanium--0.20OtherElements,each--0.05OtherElements,total--0.15Aluminumremainder3.2Condition:Theproductshallbesuppliedinthefollowingcondition;heattreatmentsshallbeperformedinaccordancewithAMS2772.3.2.1Sheet:SolutionandprecipitationheattreatedtotheT76temper(SeeAS1990).3.2.2Plate:Solutionheattreated,stress-relievedbystretchingtoproduceanominalpermanentsetof2%butnotlessthan1-1/2%normorethan3%,andprecipitationheattreatedtotheT7651temper(SeeAS1990).3.2.2.1Plateshallreceivenostraighteningoperationsafterstretching.3.3Properties:Productshallconformtothefollowingrequirements,determinedinaccordancewithAMS2355onthemillproductsize.SAE-4-AMS43153.3.1TensileProperties:ShallbeasspecifiedinTable2.TABLE2A-MinimumTensileProperties,Inch/PoundUnits(See8.2)TemperThicknessInchesTensileStrengthksiYieldStrengthat0.2%OffsetksiElongationin2Inchesor4D%T760.063to0.249,incl73.062.08Over0.249to0.499,incl72.061.08T7651Over0.499to1.000,incl71.060.06Over1.000to2.000,incl71.060.05TABLE-2BMinimumTensileStrengthProperties,SIUnits(See8.2)TemperThicknessMillimetersTensileStrengthMPaYieldStrengthat0.2%OffsetMPaElongationin2Inchesor4D%T761.60to6.32,incl5034288Over6.32to12.67,incl4974218T7651Over12.67to25.40,incl4904146Over25.40to50.80,incl49041453.3.2ElectricalConductivity:3.3.2.1Iftheconductivityis38percentIACSorhigher,andthetensilepropertiesmeettheminimumlimitsspecifiedherein,thematerialisacceptable.3.3.2.2Iftheconductivityisatleast36percentIACSbutlessthan38percentIACS,thematerialmaybetestedasspecifiedin3.3.3and3.3.4andacceptedifitpassesthesetests.Asalternatives,theproductmaybegivenanadditionalprecipitationheattreatment,orreheattreated,andretested.3.3.2.3Iftheconductivityislowerthan36.0%IACS(22.0MS/m),theproductisnotacceptableandmaybegivenanadditionalprecipitationheattreatment,orentirelyreheattreated,andretested.3.3.3ExfoliationResistance:Plateshallnotexhibitexfol