Designation:D6549−06(Reapproved2021)StandardTestMethodforDeterminationofCoolingCharacteristicsofQuenchantsbyCoolingCurveAnalysiswithAgitation(DraytonUnit)1ThisstandardisissuedunderthefixeddesignationD6549;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheequipmentandtheproce-dureforevaluationofquenchingcharacteristicsofaquenchingfluidbycoolingratedetermination.1.2Thistestmethodisdesignedtoevaluatequenchingfluidswithagitation,usingtheDraytonAgitationUnit.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2E220TestMethodforCalibrationofThermocouplesByComparisonTechniquesE230SpecificationforTemperature-ElectromotiveForce(emf)TablesforStandardizedThermocouples2.2SAEStandards:3AMS5665NickelAlloyCorrosionandHeatResistantBars,ForgingsandRings2.3OtherStandards:4WolfsonEngineeringGroupSpecificationLaboratoryTestsforAssessingtheCoolingCurveCharacteristicsofIndus-trialQuenchingMedia2.4ASTMAdjuncts:5ADJD6300D2PP,DeterminationofPrecisionandBiasDataforUseinTestMethodsforPetroleumProductsandLubricants3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1aqueouspolymerquenchant,n—anaqueouspolymerquenchantisanaqueou...
