Designation:A1075−12StandardSpecificationforFlangedSteelU-ChannelPosts1ThisstandardisissuedunderthefixeddesignationA1075;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisspecificationcoversflangedU-channelcarbonsteelpostshavinganominalweightrangingfrom0.75to6.0lb/ftandanominalwidthrangingfrom1.25to4.0in.Thesepostsarefurnishedintheas-wroughtconditionintendedforappli-cationsrequiringhightensilestrengthorcrashworthinessandwithalowercarbon(LC)designationforusewherehigherductilityorimprovedweldabilityarerequired.Thesematerialsareavailableinmultipleyieldstrengthlevelsof50,60,70,and80ksi(345,420,485,and550MPa).The50-and60-ksi(345-and420-MPa)yieldstrengthgradesareavailableaslowercarbonposts,designatedasGrades50LCor60LC.NOTE1—Thisspecificationdoesnotcoverhigh-strengthlow-alloy(HSLA)post.RefertoSpecificationA572/A572MforHSLA.ForstructuralGrade36,refertoSpecificationA36/A36M.1.2Units—Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A1SpecificationforCarbonSteelTeeRailsA6/A6MSpecificationforGeneralRequirementsforRolledStructuralSteelBars,Plates,Shapes,andSheetPilingA29/A29MSpecificationforSteelBars,CarbonandAlloy,Hot-Wrought,GeneralRequirementsforA36/A36MSpecificationforCarbonStructuralSteelA123/A123MSpecificationforZinc(Hot-DipGalvanized)CoatingsonIronandSteelProductsA370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA499Specificati...
