Designation:B551/B551M−12StandardSpecificationforZirconiumandZirconiumAlloyStrip,Sheet,andPlate1ThisstandardisissuedunderthefixeddesignationB551/B551M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecification2coversfivegradesofzirconiumstrip,sheet,andplate.1.2Unlessasingleunitisused,forexamplecorrosionmassgaininmg/dm2,thevaluesstatedineitherinch-poundorSIunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;thereforeeachsystemmustbeusedindependentlyoftheother.SIvaluescannotbemixedwithinch-poundvalues.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodportionsofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3E8TestMethodsforTensionTestingofMetallicMaterialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE290TestMethodsforBendTestingofMaterialforDuctil-ity3.Terminology3.1Definitions:3.1.1annealed,n—denotesmaterialthatexhibitsarecrys-tallizedgrainstructure.3.2LotDefinition:3.2.1lot,n—alotshallconsistofamaterialofthesamesize,shape,condition,andfinishproducedfromthesameingotorpowderblendbythesamereductionscheduleandthesameheattreatmentparameters.Unlessotherwiseagreedbetweenmanufacturerandpurchaser,alotshallbelimitedtotheproductofan8hperiodforfinalcontinuousanneal,ortoasinglefurnaceloadforfinalbatchanneal.3.3Forms:3.3.1strip,n—aflatproduct,maybesuppliedincoil,lessthan6in.[150mm]inwidthandfrom0.005in.[0.13mm]to0.188in.[4.8mm]inthickness.3.3.2sheet,n—aflatproduct6in.[150mm]ormoreinwidthandfrom0.005in.[0.13mm]to0.188in....
