Designation:G161−00(Reapproved2013)StandardGuideforCorrosion-RelatedFailureAnalysis1ThisstandardisissuedunderthefixeddesignationG161;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverskeyissuestobeconsideredwhenexaminingmetallicfailureswhencorrosionissuspectedaseitheramajororminorcausativefactor.1.2Corrosion-relatedfailurescouldincludeoneormoreofthefollowing:changeinsurfaceappearance(forexample,tarnish,rust,colorchange),pinholeleak,catastrophicstruc-turalfailure(forexample,collapse,explosiverupture,implo-siverupture,cracking),weldfailure,lossofelectricalcontinuity,andlossoffunctionality(forexample,seizure,galling,spalling,swelling).1.3Issuescoveredincludeoverallfailuresiteconditions,operatingconditionsatthetimeoffailure,historyofequipmentanditsoperation,corrosionproductsampling,environmentalsampling,metallurgicalandelectrochemicalfactors,morphol-ogy(mode)orfailure,andbyconsideringthepreceding,deducingthecause(s)ofcorrosionfailure.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E3GuideforPreparationofMetallographicSpecimensE1459GuideforPhysicalEvidenceLabelingandRelatedDocumentationE1492PracticeforReceiving,Documenting,Storing,andRetrievingEvidenceinaForensicScienceLaboratoryG1PracticeforPreparing,Cleaning,andEvaluatingCorro-sionTestSpecimensG46GuideforExaminationandEvaluationofPittingCor-rosion3.SignificanceandUse3.1Thisguideisintendedtoassistthoseencounteringcorrosionorpossiblecorrosionasacausativefactorinafailureanalysis.3.2Thisguideisnotanabsoluteplanthatwillidentifythecauseofcorrosioninallfailureanalyse...
