Designation:A553/A553M−14StandardSpecificationforPressureVesselPlates,AlloySteel,QuenchedandTempered7,8,and9%Nickel1ThisstandardisissuedunderthefixeddesignationA553/A553M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecification2covers7,8,and9%nickelalloysteelplatesforuseinthewaterquenchedandtemperedconditionintendedforthefabricationofweldedpressurevessels.1.2Materialunderthisspecificationisavailableinthreetypeshavingdifferentchemicalcompositionasfollows:TypeNominalNickelContent,%I9II8III71.3Platesproducedunderthisspecificationaresubjecttoimpacttestingat−320°F[−195°C]forTypeIorTypeIII,and−275°F[−170°C]forTypeII;oratsuchothertemperaturesasareagreedupon.1.4Themaximumthicknessofplatesislimitedonlybythecapacityofthematerialtomeetthespecifiedmechanicalpropertyrequirements;however,currentmillpracticenormallylimitsthismaterialto2in.[50mm]max.1.5Thismaterialissusceptibletomagnetization.Useofmagnetsinhandlingafterheattreatmentshouldbeavoidedifresidualmagnetismwouldbedetrimentaltosubsequentfabri-cationorservice.1.6Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3A20/A20MSpecificationforGeneralRequirementsforSteelPlatesforPressureVesselsA435/A435MSpecificationforStraight-BeamUltrasonicExaminationofSteelPlatesA5...
