Designation:A352/A352M−18aStandardSpecificationforSteelCastings,FerriticandMartensitic,forPressure-ContainingParts,SuitableforLow-TemperatureService1ThisstandardisissuedunderthefixeddesignationA352/A352M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecification2coverssteelcastingsforvalves,flanges,fittings,andotherpressure-containingpartsintendedprimarilyforlow-temperatureservice.1.2Severalgradesofferriticsteelsandonegradeofmartensiticsteelarecovered.Selectionofanalysiswilldependondesignandserviceconditions(Note1).Thetemperatureshownisthelowesttemperatureatwhichthematerialordinar-ilyisrequiredtomeettheimpactrequirementsofthisspecification(seeSupplementaryRequirementS51,ImpactTestTemperatures).Usersshouldnotethathardenabilityofsomeofthegradesmentionedmayrestrictthemaximumsizeatwhichtherequiredmechanicalpropertiesareobtainable(seeAppendixX1).GradeUsualMinimumTestingTemperatures,°F[°C]LCA−25[–32]LCB−50[–46]LCC−50[–46]LC1−75[–59]LC2−100[–73]LC2–1−100[–73]LC3−150[–101]LC4−175[–115]LC9−320[–196]CA6NM−100[−73]NOTE1—Thisspecificationcoversthelow-temperaturerequirementsparticularlypertinentforferriticandmartensiticsteels.CertaingradesofausteniticsteelcastingsfurnishedinaccordancewithSpecificationA351/A351Mhavebeenfoundsuitableforlow-temperatureservicedownto−300°F[−184°C]andothersdownto−425°F[−254°C].ThesegradesmaybeusedwhenimpacttestedinaccordancewithSpecificationA352/A352Mwithenergylevelsandtemperaturesoftestmutuallyagreeduponbetweenthepurchaserandthemanufacturer.Asaguidetotheselectionofenergylevelsandtestingtemperatures,AppendixX1shouldbeconsulted.1.3Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthete...
