Designation:D566−02(Reapproved2009)BritishStandard2877StandardTestMethodforDroppingPointofLubricatingGrease1ThisstandardisissuedunderthefixeddesignationD566;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofthedrop-pingpointoflubricatinggrease.1.2Thistestmethodisnotrecommendedforuseatbathtemperaturesabove288°C.ForhighertemperaturesTestMethodD2265shouldbeused.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,see6.4and8.1.2.ReferencedDocuments2.1ASTMStandards:2D217TestMethodsforConePenetrationofLubricatingGreaseD235SpecificationforMineralSpirits(PetroleumSpirits)(HydrocarbonDryCleaningSolvent)D2265TestMethodforDroppingPointofLubricatingGreaseOverWideTemperatureRangeE1SpecificationforASTMLiquid-in-GlassThermometers3.Terminology3.1Definitions:3.1.1lubricatinggrease,n—asemi-fluidtosolidproductofathickenerinaliquidlubricant.3.1.1.1Discussion—Thedispersionofthethicknerformsatwo-phasesystemandimmobilizestheliquidlubricantbysurfacetensionandotherphysicalforces.Otheringredientsarecommonlyincludedtoimpartspecialproperties.D2173.1.2thickener,n—inlubricatinggrease,asubstancecom-posedoffinely-dividedparticlesdispersedinaliquidtoformtheproduct’sstructure.3.1.2.1Discussion—Thickenerscanbefibers(suchasvari-ousmetallicsoaps)orplatesorspheres(suchascertainnon-soapsthickeners),whichareinsolubleor,atmost,onlyveryslightlysolubleintheliquid...
