Designation:A662/A662M−12StandardSpecificationforPressureVesselPlates,Carbon-Manganese-SiliconSteel,forModerateandLowerTemperatureService1ThisstandardisissuedunderthefixeddesignationA662/A662M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecification2coversthreegradesofcarbon-manganese-siliconsteelplatesintendedprimarilyforserviceinweldedpressurevesselswhereimprovedlowtemperaturenotchtoughnessisimportant.1.2Themaximumthicknessofplatesislimitedonlybythecapacityofthecompositiontomeetthespecifiedmechanicalpropertyrequirements;however,currentpracticenormallylimitsthemaximumthicknessofplatesfurnishedunderthisspecificationto2in.[50mm].1.3GradesA,B,andCcomplysubstantiallywiththerequirementsofISOPressureVesselSteelsP9,P15,andP18,respectively.1.4Forplatesproducedfromcoilandfurnishedwithoutheattreatmentorwithstressrelievingonly,theadditionalrequirements,includingadditionaltestingrequirementsandthereportingofadditionaltestresults,ofSpecificationA20/A20Mapply.1.5Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecifi-cation.2.ReferencedDocuments2.1ASTMStandards:3A20/A20MSpecificationforGeneralRequirementsforSteelPlatesforPressureVesselsA435/A435MSpecificationforStraight-BeamUltrasonicExaminationofSteelPlatesA577/A577MSpecificationforUltrasonicAngle-BeamEx-aminationofSteelPlatesA578/A578MSpecificationforStraight-BeamUltrasonicExaminationofRolledSteelPlatesforSpecialApplica-tions3.GeneralRequirementsandOrderingInformation3.1MaterialsuppliedtothismaterialspecificationshallconformtoSpecificationA20/A20M.Theserequ...
