Designation:A633/A633M−13StandardSpecificationforNormalizedHigh-StrengthLow-AlloyStructuralSteelPlates1ThisstandardisissuedunderthefixeddesignationA633/A633M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcoversnormalizedhigh-strengthlow-alloystructuralsteelplatesforwelded,riveted,orboltedconstruction.1.2Thismaterialisparticularlysuitedforserviceatlowambienttemperaturesof−50°F[−45°C]andhigherwherenotchtoughnessbetterthanthatexpectedinas-rolledmaterialofacomparablestrengthlevelisdesired.1.3Fourgrades,designatedGradesA,C,D,andE(essen-tiallyformerSpecificationA633withoutagradedesignation)arecoveredbythisspecification.GradeAprovidesaminimumyieldpointof42ksi[290MPa]inthicknessesthrough4in.[100mm],inclusive.GradesCandDprovideaminimumyieldpointof50ksi[345MPa]inthicknessesupto2.50in.[65mm],inclusiveand46.0ksi[315MPa]inthicknessesover2.50in.to4.0in.[65to100mm],inclusive.GradeEprovidesaminimumyieldpointof60ksi[415MPa]inthicknessesupto4.0in.[100mm],inclusiveand55ksi[380MPa]inthick-nessesover4in.to6in.[100to150mm],inclusive.1.4Currentpracticenormallylimitsplatesfurnishedunderthisspecificationtothemaximumthicknessesshownin1.3.Theindividualmanufacturershouldbeconsultedonsizelimitationsforotherproductforms.1.5Whenthesteelistobewelded,itispresupposedthataweldingproceduresuitableforthegradeofsteelandintendeduseorservicewillbeutilized.SeeAppendixX3ofSpecifica-tionA6/A6Mforinformationonweldability.1.6Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedinde-pendentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewit...
