Designation:D7918−15StandardTestMethodforMeasurementofFlowPropertiesandEvaluationofWear,ContaminantsandOxidativePropertiesofLubricatingGreasebyDieExtrusionMethodandPreparation1ThisstandardisissuedunderthefixeddesignationD7918;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationandevalua-tionofflowproperties,wearlevels,contaminants,andoxida-tiveconditionofnewandin-servicelubricatinggrease.1.2Thistestmethodprovidesguidanceonevaluatingin-servicegreasesamples,NLGIgrades00to3,forwear,consistency,contamination,andoxidation.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3.1Exception—Theexceptiontothiswillbewhereunitsofreferencesweredevelopedbythedevelopersofthetestequipmentandnecessarytoreporttheresultsofthetest.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D217TestMethodsforConePenetrationofLubricatingGreaseD4175TerminologyRelatingtoPetroleum,PetroleumProducts,andLubricantsD6595TestMethodforDeterminationofWearMetalsandContaminantsinUsedLubricatingOilsorUsedHydraulicFluidsbyRotatingDiscElectrodeAtomicEmissionSpec-trometryD7527TestMethodforMeasurementofAntioxidantCon-tentinLubricatingGreasesbyLinearSweepVoltammetryD7718PracticeforObtainingIn-ServiceSamplesofLubri-catingGreaseD7843TestMethodforMeasurementofLubricantGener-atedInsolubleColorBodiesinIn-ServiceTurbineOilsusingMembranePatchColorimetryE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMet...
