Designation:G133−05(Reapproved2016)StandardTestMethodforLinearlyReciprocatingBall-on-FlatSlidingWear1ThisstandardisissuedunderthefixeddesignationG133;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverslaboratoryproceduresforde-terminingtheslidingwearofceramics,metals,andothercandidatewear-resistantmaterialsusingalinear,reciprocatingball-on-flatplanegeometry.Thedirectionoftherelativemotionbetweenslidingsurfacesreversesinaperiodicfashionsuchthattheslidingoccursbackandforthandinastraightline.Theprincipalquantitiesofinterestarethewearvolumesofthecontactingballandflatspecimenmaterials;however,thecoefficientofkineticfrictionmayalsobemeasuredusingthemethoddescribed.Thistestmethodencompassesbothunlu-bricatedandlubricatedtestingprocedures.Thescopeofthistestmethoddoesnotincludetestingincorrosiveorchemicallyaggressiveenvironments.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E112TestMethodsforDeterminingAverageGrainSizeE1181TestMethodsforCharacterizingDuplexGrainSizesG40TerminologyRelatingtoWearandErosionG99TestMethodforWearTestingwithaPin-on-DiskApparatusG115GuideforMeasuringandReportingFrictionCoeffi-cientsG117GuideforCalculatingandReportingMeasuresofPrecisionUsingDatafromInterlaboratoryWearorEro-sionTestsG118GuideforRecommendedFormatofWearTestDataSuitableforDatabases3.Terminology3.1Definitions:3.1.1DefinitionsusedinthistestmethodaregiveninTerminologyG40.Thefollowingdefinitionsofimportanttermsusedinthistes...
