Designation:D6813−02a(Reapproved2013)StandardGuideforPerformanceEvaluationofHydraulicFluidsforPistonPumps1ThisstandardisissuedunderthefixeddesignationD6813;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstheestablishmentoftestprotocolsandmethodologiesfordeterminingthesuitabilityoffluidsforuseinfluidpowersystemsthatincorporateaxialorradialpistonpumps.Thesuitabilityofallfluidtypestomeetspecificlevelsofperformanceinpistonpumpsisaddressed.Thesefluidsinclude,butarenotlimitedtoformulationsbasedonmineral,syntheticorvegetableoilbasestocks.Thefinishedfluidsmaybeintheformofstraightoils,solubleoilsorinvertemulsions.1.2Thetestprotocolsandmethodologiesdescribedinthisguidehavebeenselectedfortheirabilitytodistinguishbetweenhighlyacceptable,acceptableandunacceptablefluidperformanceinpistonpumps.Theytakeintoaccountthebroadrangeofoperatingconditionspistonpumpsaresubjectedto,aswellasthecommonvariationsindesignandmaterialsofconstructionamongpumpmanufacturers.1.3Thisguideisintendedtocomplementproprietarytestprotocolsandmethodologiesemployedbysomepistonpumpmanufacturers.Thetestprotocolsandmethodologieswithinthisguidemayhelppumpmanufacturers,fluidformulatorsandendusersaccuratelyscreenpotentialfluidsforspecificperfor-mancecharacteristics.Theresultsofthisscreeningmaybesufficientincertaininstancesforpumpmanufacturerstoforegorequirementsforadditionalfluidperformancetests.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatoryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D92TestMethodforFlashandFirePointsbyClevelandOpenCupTesterD93TestMethodsforFlashPointbyPensky-MartensClosedCupTes...
