Designation:G112−92(Reapproved2015)StandardGuideforConductingExfoliationCorrosionTestsinAluminumAlloys1ThisstandardisissuedunderthefixeddesignationG112;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisguidediffersfromtheusualASTMstandardinthatitdoesnotaddressaspecifictest.Rather,itisanintroductoryguidefornewusersofotherstandardexfoliationtestmethods,(seeTerminologyG15fordefinitionofexfoliation).1.2Thisguidecoversaspectsofspecimenpreparation,exposure,inspection,andevaluationforconductingexfoliationtestsonaluminumalloysinbothlaboratoryacceleratedenvi-ronmentsandinnatural,outdooratmospheres.Theintentistoclarifyanygapsinexistenttestmethods.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2G1PracticeforPreparing,Cleaning,andEvaluatingCorro-sionTestSpecimensG15TerminologyRelatingtoCorrosionandCorrosionTest-ing(Withdrawn2010)3G34TestMethodforExfoliationCorrosionSusceptibilityin2XXXand7XXXSeriesAluminumAlloys(EXCOTest)G50PracticeforConductingAtmosphericCorrosionTestsonMetalsG66TestMethodforVisualAssessmentofExfoliationCorrosionSusceptibilityof5XXXSeriesAluminumAl-loys(ASSETTest)G85PracticeforModifiedSaltSpray(Fog)TestingG92PracticeforCharacterizationofAtmosphericTestSites2.2ASTMAdjuncts:IllustrationsofAppearanceClassifications(6glossypho-tos)43.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1panel—aflat,rectangularspecimennormallytakenwiththetestsurfaceparalleltothelongitudinalandlong-transversedimens...
