Designation:G5−14StandardReferenceTestMethodforMakingPotentiodynamicAnodicPolarizationMeasurements1ThisstandardisissuedunderthefixeddesignationG5;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversanexperimentalprocedureforcheckingexperimentaltechniqueandinstrumentation.Iffollowed,thistestmethodwillproviderepeatablepotentiody-namicanodicpolarizationmeasurementsthatwillreproducedatadeterminedbyothersatothertimesandinotherlabora-toriesprovidedalllaboratoriesaretestingreferencesamplesfromthesamelotofType430stainlesssteel.1.2Units—ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE1338GuideforIdentificationofMetalsandAlloysinComputerizedMaterialPropertyDatabasesG3PracticeforConventionsApplicabletoElectrochemicalMeasurementsinCorrosionTestingG107GuideforFormatsforCollectionandCompilationofCorrosionDataforMetalsforComputerizedDatabaseInput3.SignificanceandUse3.1Theavailabilityofastandardprocedure,standardmaterial,andastandardplotshouldmakeiteasyforaninvestigatortocheckhistechniques.Thisshouldleadtopolarizationcurvesintheliteraturewhichcanbecomparedwithconfidence.3.2SamplesofastandardferriticType430stainlesssteel(UNSS43000)usedinobtainingstandardreferenceplotareavailableforthosewhowishtochecktheirowntestprocedureandequipment.33.3Standardpotentiodynamicpolarizationplotsareshownforalotofmaterialoriginallypurchasedin1992.Thistestmet...
