Designation:B737−10(Reapproved2015)StandardSpecificationforHot-Rolledand/orCold-FinishedHafniumRodandWire1ThisstandardisissuedunderthefixeddesignationB737;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcovershot-orcold-workedhafniumrodandwire.1.2Thisspecificationcontainstwomaterialgrades,onespecificallyfornuclearapplications(GradeR1)andoneforcommercialalloyingapplications(GradeR3).1.3Theproductscoveredincludethefollowing:1.3.1Rod3⁄8to1in.(9.5to25mm)indiameter.1.3.2Wirelessthan3⁄8in.(9.5mm)indiameter.1.4Unlessasingleunitisused,forexample,corrosionmassgaininmg/dm2,thevaluesstatedineitherinch-poundorSIunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.SIvaluescannotbemixedwithinch-poundvalues.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E8TestMethodsforTensionTestingofMetallicMaterialsE21TestMethodsforElevatedTemperatureTensionTestsofMetallicMaterialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE2626GuideforSpectrometricAnalysisofReactiveandRefractoryMetals3.Terminology3.1Definitions:3.1.1rounds,flats,tubes,andwroughtpowdermetallurgicalproducts(singledefinition,commontonuclearandnon-nuclearstandards),n—alotshallconsistofamaterialofthesamesize,shape,condition,andfinishproducedfromthesameingotorpowderblendbythesamereductionscheduleandthesameheattreatmentparameters.Unlessotherwiseagreedbetweenmanufacturerandpurchaser,alotshallbelimitedtotheproductofan8hperiodforfinalco...
