资源描述：
《A270-03奥氏体不锈钢管焊接标准》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、Designation:A270–03aStandardSpecificationforSeamlessandWeldedAusteniticandFerritic/Austenitic1StainlessSteelSanitaryTubingThisstandardisissuedunderthe®xeddesignationA270;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,in
2、thecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*2
3、.2ASMEStandard:1.1Thisspeci®cationcoversgradesofseamless,welded,B46.1SurfaceTexture(SurfaceRoughness,Waviness,andLay)3andheavilycoldworkedweldedausteniticandferritic/austeniticstainlesssteelsanitarytubingintendedforuseinthe2.3ASMEBoilerandPressureVess
4、elCode:SectionVIIIPressureVessels3dairyandfoodindustryandhavingspecialsurface®nishes.Pharmaceuticalqualitymayberequested,asasupplementary2.4OtherStandard:requirement.SAEJ1086PracticeforNumberingMetalsandAlloys(UNS)41.2Thisspeci®cationcoverstubesinsize
5、suptoandincluding12in.(304.8mm)inoutsidediameter.3.Terminology1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.3.1De®nition:1.4Optionalsupplementaryrequirementsareprovided,and3.1.1roughnessaverage,Ra,nÐarithmeticaveragesurfacewhenoneorm
6、oreofthesearedesired,eachshallbesostatedroughnessnormallyreportedinmicroinchesormicrons;aintheorder.measurementofsurfaceroughnessusuallyperformedbymov-ingastylusinastraightlinealongthesurface,althoughother2.ReferencedDocumentsmethodsmaybeused.2.1ASTMS
7、tandards:24.OrderingInformationA262PracticesforDetectingSusceptibilitytoIntergranu-larAttackinAusteniticStainlessSteels4.1ItistheresponsibilityofthepurchasertospecifyallA480/A480MSpeci®cationforGeneralRequirementsforrequirementsthatarenecessaryformate
8、rialorderedunderthisFlat-RolledStainlessandHeat-ResistingSteelPlate,speci®cation.Suchrequirementsmayinclude,butarenotSheet,andStriplimitedto,thefollowing:A923TestMethodsforDetectingDetrimentalIntermetallic4.1.1Quantity(feet,metres,ornumberofle
