ASTM-A588-A588M-2015

Designation:A588/A588M−15AmericanAssociationStateHighwayandTransportationOfficialsStandardAASHTONo.:M222StandardSpecificationforHigh-StrengthLow-AlloyStructuralSteel,upto50ksi[345MPa]MinimumYieldPoint,withAtmosphericCorrosionResistance1ThisstandardisissuedunderthefixeddesignationA588/A588M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcovershigh-strengthlow-alloystruc-turalsteelshapes,plates,andbarsforwelded,riveted,orboltedconstructionbutintendedprimarilyforuseinweldedbridgesandbuildingswheresavingsinweightoraddeddurabilityareimportant.Theatmosphericcorrosionresistanceofthissteelinmostenvironmentsissubstantiallybetterthanthatofcarbonstructuralsteelswithorwithoutcopperaddition(seeNote1).Whenproperlyexposedtotheatmosphere,thissteelissuitableformanyapplicationsinthebare(unpainted)condition.Thisspecificationislimitedtomaterialupto8in.[200mm]inclusiveinthickness.NOTE1—Formethodsofestimatingtheatmosphericcorrosionresis-tanceoflow-alloysteels,seeGuideG101.1.2Whenthesteelistobewelded,aweldingproceduresuitableforthegradeofsteelandintendeduseorserviceistobeutilized.SeeAppendixX3ofSpecificationA6/A6Mforinformationonweldability.1.3Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemistobeusedindependentlyoftheother,withoutcombiningvaluesinanyway.1.4Thetextofthisspecificationcontainsnotes,footnotes,orboth,thatprovideexplanatorymaterial.Suchnotesandfootnotes,excludingthoseintablesandfigures,donotcontainanymandatoryrequirements.1.5Forstructuralproductsproducedfromcoilandfur-nishedwithoutheattreatmentorwithstressrelievingonly,theadditionalrequirements,includingadditionaltestingrequire-mentsandthereportingofadditionaltestresults,ofSpecifi-cationA6/A6Mapply.2.ReferencedDocuments2.1ASTMStandards:2A6/A6MSpecificationforGeneralRequirementsforRolledStructuralSteelBars,Plates,Shapes,andSheetPilingG101GuideforEstimatingtheAtmosphericCorrosionRe-sistanceofLow-AlloySteels3.GeneralRequirementsforDelivery3.1StructuralproductsfurnishedunderthisspecificationshallconformtotherequirementsofthecurrenteditionofSpecificationA6/A6M,forthespecificstructuralproductordered,unlessaconflictexists,inwhichcasethisspecificationshallprevail.3.2Coilsareexcludedfromqualificationtothisspecifica-tionuntiltheyareprocessedintoafinishedstructuralproduct.Structuralproductsproducedfromcoilmeansstructuralprod-uctsthathavebeencuttoindividuallengthsfromacoil.Theprocessordirectlycontrols,orisresponsiblefor,theoperationsinvolvedintheprocessingofacoilintoafinishedstructuralproduct.Suchoperationsincludedecoiling,levelingorstraightening,hot-formingorcold-forming(ifapplicable),cuttingtolength,testing,inspection,conditioning,heattreat-ment(ifapplicable),packaging,marking,loadingforshipment,andcertification.NOTE2—Forstructuralproductsproducedfromcoilandfurnishedwithoutheattreatmentorwithstressrelievingonly,twotestresultsaretobereportedforeachqualifyingcoil.AdditionalrequirementsregardingstructuralproductsproducedfromcoilaredescribedinSpecificationA6/A6M.1ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.02onStructuralSteelforBridges,Buildings,RollingStockandShips.CurrenteditionapprovedMarch1,2015.PublishedMarch2015.Originallyapprovedin1968.Lastpreviouseditionapprovedin2010asA588/A588M–10.DOI:10.1520/A0588_A0588M-15.2ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.*ASummaryofChangessectionappearsattheendofthisstandardCopyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959.UnitedStates14.MaterialsandManufacture4.1Thesteelshallbemadetofinegrainpractice.5.ChemicalComposition5.1TheheatanalysisshallconformtotherequirementsprescribedinTable1.5.2ThesteelshallconformonproductanalysistotherequirementsprescribedinTable1,subjecttotheproductanalysistolerancesinSpecificationA6/A6M.5.3Theatmosphericcorrosion-resistanceindex,calculatedonthebasisoftheheatanalysisofthesteel,asdescribedinGuideG101–PredictiveMethodBasedontheDataofLarabeeandCoburn,shallbe6.0orhigher.NOTE3—TheuseriscautionedthattheGuideG101predictiveequation(PredictiveMethodBasedontheDataofLarabeeandCoburn)forcalculationofanatmosphericcorrosion-resistanceindexhasonlybeenverifiedforthecompositionlimitsstatedintheguide.5.4Whenrequired,themanufacturershallsupplyevidenceofcorrosionresistancesatisfactorytothepurchaser.6.TensileRequirements6.1Thematerialasrepresentedbythetestspecimensshallconformtotherequirementsfortensilepropertie