ASTM A335A335M-18a 英文版

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1、ThisinternationalstandardwasdevelopedinaccordancewithinternationallyrecognizedprinciplesonstandardizationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecommendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.

2、Designation:A335/A335M−18aStandardSpeciÞcationforSeamlessFerriticAlloy-SteelPipeforHigh-Temperature1ServiceThisstandardisissuedundertheÞxeddesignationA335/A335M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevis

3、ion.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.5Thisinternationalstandardwasdevelopedinaccor-2dancewithint

4、ernationallyrecognizedprinciplesonstandard-1.1ThisspeciÞcationcoversnominalwallandminimumizationestablishedintheDecisiononPrinciplesforthewallseamlessferriticalloy-steelpipeintendedforhigh-DevelopmentofInternationalStandards,GuidesandRecom-temperatureservice.Pipeorderedtothisspe

5、ciÞcationshallbemendationsissuedbytheWorldTradeOrganizationTechnicalsuitableforbending,ßanging(vanstoning),andsimilarform-BarrierstoTrade(TBT)Committee.ingoperations,andforfusionwelding.Selectionwilldependupondesign,serviceconditions,mechanicalproperties,and2.ReferencedDocuments

6、high-temperaturecharacteristics.32.1ASTMStandards:1.2Severalgradesofferriticsteels(seeNote1)arecovered.A999/A999MSpeciÞcationforGeneralRequirementsforTheircompositionsaregiveninTable1.AlloyandStainlessSteelPipeNOTE1ÑFerriticsteelsinthisspeciÞcationaredeÞnedaslow-andE92TestMethod

7、sforVickersHardnessandKnoopHard-intermediate-alloysteelscontaininguptoandincluding10%chromium.nessofMetallicMaterials1.3Supplementaryrequirements(S1toS8)ofanoptionalE213PracticeforUltrasonicTestingofMetalPipeandnatureareprovided.SupplementaryrequirementsS1throughTubingS6callfora

8、dditionalteststobemade,andwhendesired,shallE309