Designation:D7421−19StandardTestMethodforDeterminingExtremePressurePropertiesofLubricatingOilsUsingHigh-Frequency,Linear-Oscillation(SRV)TestMachine1ThisstandardisissuedunderthefixeddesignationD7421;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversaprocedurefordeterminingextremepressurepropertiesoflubricatingoilsforhydraulics,gears,andenginesunderhigh-frequencylinear-oscillationmotionusingtheSRVtestmachine.NOTE1—ThistestmethodwasdevelopedandtheinternationalroundrobintestswerejointlyperformedwiththeDIN51834workinggroup.Thisprocedureisbasedonthe2005revisionofTestMethodD5706forgreasesanddiffersregardingthestrokelengthandthecleaningsolvent.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2A295/A295MSpecificationforHigh-CarbonAnti-FrictionBearingSteelD217TestMethodsforConePenetrationofLubricatingGreaseD235SpecificationforMineralSpirits(PetroleumSpirits)(HydrocarbonDryCleaningSolvent)D4175TerminologyRelatingtoPetroleumProducts,LiquidFuels,andLubricantsD5706TestMethodforDeterminingExtremePressurePropertiesofLubricatingGreasesUsingaHigh-Frequency,Linear-Oscillation(SRV)TestMachineE45TestMethodsforDeterminingtheI...
