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Designation:E155−10StandardReferenceRadiographsforInspectionofAluminumandMagnesiumCastings1ThisstandardisissuedunderthefixeddesignationE155;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.TheseReferenceRadiographshavebeendevelopedincooperationwiththeQualityControlCommitteeandAerospaceResearchandTestingCommitteeoftheAerospaceIndustriesAssociation.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thesereferenceradiographsillustratethetypesanddegreesofdiscontinuitiesthatmaybefoundinaluminum-alloyandmagnesium-alloycastings.Thecastingsillustratedareinthicknessesof1⁄4in.(6.35mm)and3⁄4in.(19.1mm).ThereferenceradiographfilmsareanadjuncttothisdocumentandmustbepurchasedseparatelyfromASTMInternationalifneeded.1.2Thesefilmreferenceradiographsarenotintendedtoillustratethetypesanddegreesofdiscontinuitiesfoundinaluminum-alloycastingswhenperformingdigitalradiography.Ifperformingdigitalradiographyofaluminum-alloycastings,refertoDigitalReferenceImageStandardE2422.Magnesium-alloydigitalreferenceimagesarenotcurrentlyavailablefromASTMInternational.1.3Thisdocumentmaybeusedwherenootherapplicabledocumentexists,forothermaterialthicknessesforwhichithasbeenfoundtobeapplicableandforwhichagreementhasbeenreachedbetweenthepurchaserandthemanufacturer.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesaremathemati-calconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTE1—VolI:Thesetofreferenceradiographsconsistsof13platescoveringdiscontinuitiesinaluminum-alloycastingsand10platescover-ingdiscontinuitiesinmagnesium-alloycastings.Eachplateisheldinan81⁄2by11-in.(216by279-mm)cardboardframeandeachplateillustrateseightgradesofseverityforthediscontinuityinapproximatelya2by2-in.(51by51-mm)area.Thecardboardframesarecontainedina101⁄2by111⁄2-in.(267by292-mm)ringbinder.Thereferenceradiographsarenotimpactedbythisrevision.Therehavebeennorevisionstotheadjunctreferenceradiographssinceoriginalissue.Theadjunctreferenceradio-graphsofanyissueremainvalidandmaybeusedtothisstandard.Vol.II:Thesetofreferenceradiographsconsistsoffourplatescoveringdiscontinuitiesinmagnesium-alloycastingsonly.Eachplateisheldinan81⁄2by11-in.(216by279-mm)cardboardframeandillustrateseightgradesofseverityforthediscontinuity(withtheexceptionofdiscretediscontinuities,whereonlyoneexampleofeachdiscontinuityisgiven).NOTE2—Referenceradiographsapplicabletoaluminumandmagne-siumdiecastingsupto1in.(25mm)inthicknessarecontainedinReferenceRadiographsE505.2.ReferencedDocuments2.1ASTMStandards:2E94GuideforRadiographicExaminationE505ReferenceRadiographsforInspectionofAluminumandMagnesiumDieCastingsE1316TerminologyforNondestructiveExaminationsE2422DigitalReferenceImagesforInspectionofAlumi-numCastings2.2ASTMAdjuncts:ReferenceRadiographsforInspectionofAluminumandMagnesiumCastings:VolumeI,AluminumandMagnesiumCastings3VolumeII,MagnesiumCastings43.Terminology3.1Definitions—DefinitionsoftermsusedinthisstandardmaybefoundinTerminologyE1316.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1Thetermsrelatingtodiscontinuitiesusedinthesereferenceradiographsaredescribedbaseduponradiographicappearance.1ThesereferenceradiographsareunderthejurisdictionofASTMCommitteeE07onNondestructiveTestingandarethedirectresponsibilityofSubcommitteeE07.02onReferenceRadiologicalImages.CurrenteditionapprovedSept.1,2010.PublishedSeptember2010.Originallyapprovedin1960.Lastpreviouseditionapprovedin2005asE155-05.DOI:10.1520/E0155-10.2ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.3AvailablefromASTMInternationalHeadquarters.OrderReferenceRadio-graphNo.ADJE015501.4AvailablefromASTMInternationalHeadquarters.OrderReferenceRadio-graphNo.ADJE015502.Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959.UnitedStates1://—appearasisolated,irregular,orelongatedvariationsoffilmdensity,notcorrespondingtovariationsinthicknessofmaterial,nortocavities.Theymaybeduetothepresenceofsand,slag,oxideordross,ormetalofdifferentdensity.3.2.3gasholes—appearasroundorelongated,smooth-edgeddarkspots,occurringindividually,inclusters,ordistrib-utedthroughoutthecasting.3.2.4gasporosity—representedbyroundorelongateddarkspotscorrespondingtominutevoidsusuallydistributedthroughtheentirecasting.3.2.5microshrinkage(featherytype)—microshrinkagehav-in