Designation:D2532−17StandardTestMethodforViscosityandViscosityChangeAfterStandingatLowTemperatureofAircraftTurbineLubricants1ThisstandardisissuedunderthefixeddesignationD2532;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofthekine-maticviscosityofaircraftturbinelubricantsatlowtemperature,andthepercentchangeofviscosityaftera3handa72hstandingperiodatlowtemperature.1.1.1Therangeofkinematicviscositiescoveredbythistestmethodisfrom7700mm2/sto14000mm2/sat–40°Candfrom7000mm2/sto17500mm2/sat–51°C.Theprecisionhasonlybeendeterminedforthosematerials,kinematicviscosityranges,andtemperaturesasshownintheprecisionsection.Kinematicviscositiesandpercentchangeofviscositymaybemeasuredandreportedatothertemperaturesandotherthermalsoakperiodintervalsasagreedbythecontractingparties.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.2.1TheSIunitusedinthistestmethodforKinematicViscosityismm2/s.Foruserreference,1mm2/s=10-6m2/s=1cSt.1.3Warning—Mercuryhasbeendesignatedbymanyregu-latoryagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidneyandliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercurycontainingproducts.SeetheapplicableproductMaterialSafetyDataSheet(MSDS)fordetailsandEPA’swebsite—http://www.epa.gov/mercury/faq.htm—foradditionalinforma-tion.Usersshouldbeawarethatsellingmercuryand/ormercurycontainingproductsintoyourstateorcountrymaybeprohibitedbylaw.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandheal...
