Designation:A782/A782M–06StandardSpecificationforPressure-VesselPlates,Quenched-and-Tempered,Manganese-Chromium-Molybdenum-SiliconZirconiumAlloySteel1ThisstandardisissuedunderthefixeddesignationA782/A782M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcovershigh-strengthquenchedandtemperedalloysteelplatesintendedforuseinfusionweldedpressurevessels.1.2Platesfurnishedunderthisspecificationareavailableinthreeclasseshavingdifferentstrengthlevelsasfollows:YieldTensileStrength,Strength,min,min,Classksi[MPa]ksi[MPa]180[550]97[670]290[620]107[740]3100[690]115[795]1.3Thethicknessofplatesunderthisspecificationislimitedtoamaximumof2in.[50mm].1.4Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemistobeusedindependentlyoftheotherwithoutcombiningvaluesfromthetwosystems.2.ReferencedDocuments2.1ASTMStandards:2A20/A20MSpecificationforGeneralRequirementsforSteelPlatesforPressureVesselsA435/A435MSpecificationforStraight-BeamUltrasonicExaminationofSteelPlatesA577/A577MSpecificationforUltrasonicAngle-BeamExaminationofSteelPlatesA578/A578MSpecificationforStraight-BeamUltrasonicExaminationofPlainandCladSteelPlatesforSpecialApplications3.GeneralRequirementsandOrderingInformation3.1Platessuppliedtothismaterialspecificationshallcon-formtoSpecificationA20/A20M.Theserequirementsoutlinethetestingandretestingmethodsandprocedures,permissiblevariationsindimensionsandmass,qualityandrepairofdefects,marking,loading,etc.3.2SpecificationA20/A20Malsoestablishestherulesfortheorderinginformationthatshouldbecompliedwithwhenpurchasingmaterialtothisspecification.3.3Inadditiontothebasicrequirementsofthisspecifica-tion,certainsuppl...
