Designation:G48−11(Reapproved2015)StandardTestMethodsforPittingandCreviceCorrosionResistanceofStainlessSteelsandRelatedAlloysbyUseofFerricChlorideSolution1ThisstandardisissuedunderthefixeddesignationG48;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverproceduresforthedetermina-tionoftheresistanceofstainlesssteelsandrelatedalloystopittingandcrevicecorrosion(seeTerminologyG15)whenexposedtooxidizingchlorideenvironments.SixproceduresaredescribedandidentifiedasMethodsA,B,C,D,E,andF.1.1.1MethodA—Ferricchloridepittingtest.1.1.2MethodB—Ferricchloridecrevicetest.1.1.3MethodC—Criticalpittingtemperaturetestfornickel-baseandchromium-bearingalloys.1.1.4MethodD—Criticalcrevicetemperaturetestfornickel-baseandchromium-bearingalloys.1.1.5MethodE—Criticalpittingtemperaturetestforstain-lesssteels.1.1.6MethodF—Criticalcrevicetemperaturetestforstain-lesssteels.1.2MethodAisdesignedtodeterminetherelativepittingresistanceofstainlesssteelsandnickel-base,chromium-bearingalloys,whereasMethodBcanbeusedfordeterminingboththepittingandcrevicecorrosionresistanceofthesealloys.MethodsC,D,EandFallowforarankingofalloysbyminimum(critical)temperaturetocauseinitiationofpittingcorrosionandcrevicecorrosion,respectively,ofstainlesssteels,nickel-baseandchromium-bearingalloysinastandardferricchloridesolution.1.3Thesetestsmaybeusedtodeterminetheeffectsofalloyingadditives,heattreatment,andsurfacefinishesonpittingandcrevicecorrosionresistance.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Otherunitsaregiveninparenthesesforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimit...
