ASTM A262-2015 Standard Practices for Detecting Susceptibility to Intergranular 英文版

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1、Designation:A262−15StandardPracticesforDetectingSusceptibilitytoIntergranularAttackinAustenitic1StainlessSteelsThisstandardisissuedundertheÞxeddesignationA262;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparen

2、thesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*basedonvisualexaminationofbendspecimensand,therefore,classiÞesthespecimensonlyasacceptableornon

3、acceptable.1.1ThesepracticescoverthefollowingÞvetests:1.1.1PracticeAOxalicAcidEtchTestforClassiÞcation1.4ThepresenceorabsenceofintergranularattackintheseofEtchStructuresofAusteniticStainlessSteels(Sections4totestsisnotnecessarilyameasureoftheperformanceofthe13,inclusive),materialinothercorrosiv

4、eenvironments.Thesetestsdonot1.1.2PracticeBFerricSulfate-SulfuricAcidTestforDe-provideabasisforpredictingresistancetoformsofcorrosiontectingSusceptibilitytoIntergranularAttackinAusteniticotherthanintergranular,suchasgeneralcorrosion,pitting,orStainlessSteels(Sections14to25,inclusive),stress-cor

5、rosioncracking.1.1.3PracticeCNitricAcidTestforDetectingSuscepti-NOTE1ÑSeeAppendixX1forinformationregardingtestselection.bilitytoIntergranularAttackinAusteniticStainlessSteels1.5ThevaluesstatedinSIunitsaretoberegardedas(Sections26to36,inclusive),standard.Theinch-poundequivalentsareinparenthesesa

6、nd1.1.4PracticeECopperÐCopperSulfateÐSulfuricAcidmaybeapproximate.TestforDetectingSusceptibilitytoIntergranularAttackinAusteniticStainlessSteels(Sections37to46,inclusive),and1.6Thisstandarddoesnotpurporttoaddressallofthe1.1.5PracticeFCopperÐCopperSulfateÐ50%Sulfuricsafetyconcerns,ifany,associat

7、edwithitsuse.ItistheAcidTestforDetectingSusceptibilitytoIntergranularAttackresponsibilityoftheuserofthisstandardtoestablishappro-inMolybdenum-BearingAusteniticStainlessSteels(Sectionspriatesafetyandhealthpracticesanddeterminetheap