Designation:A512−06(Reapproved2012)StandardSpecificationforCold-DrawnButtweldCarbonSteelMechanicalTubing1ThisstandardisissuedunderthefixeddesignationA512;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcoverscold-drawnbuttweldcarbonsteeltubesforuseasmechanicaltubing.1.2Thisspecificationcoversround,square,rectangular,andspecialshapemechanicaltubing.1.3Roundtubesizerangescoveredareoutsidediametersupto31⁄2in.(88.9mm)andwallthicknessfrom0.035to0.500in.(0.89to12.70mm).1.4Optionalsupplementaryrequirementsareprovidedand,whendesired,shallbesostatedintheorder.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.2.ReferencedDocuments2.1ASTMStandards:2A370TestMethodsandDefinitionsforMechanicalTestingofSteelProductsA1040GuideforSpecifyingHarmonizedStandardGradeCompositionsforWroughtCarbon,Low-Alloy,andAlloySteelsE59PracticeforSamplingSteelandIronforDeterminationofChemicalComposition(Withdrawn1996)32.2MilitaryStandards:4MIL-STD-129MarkingforShipmentandStorageMIL-STD-163SteelMillProductsPreparationforShipmentandStorage2.3FederalStandard:Fed.Std.No.123MarkingforShipments(CivilAgencies)43.OrderingInformation3.1Ordersformaterialunderthisspecificationshouldincludethefollowing,asrequired,todescribetherequiredmaterialadequately:3.1.1Quantity(feet,weight(Note1),ornumberoflengths),NOTE1—Theterm“weight”istemporarilyusedinthisspecificationbecauseofestablishedtradeusage.Thewordisusedtomeanboth“force”and“mass,”andcaremustbetakentodeterminewhichismeantineachcase(SIunitforforce=newtonandformass=kilogram).3.1.2Nameofmaterial(buttweldcarbonsteelmechanicalt...
