Designation:D3412/D3412M−13(Reapproved2020)StandardTestMethodforCoefficientofFriction,YarntoYarn1ThisstandardisissuedunderthefixeddesignationD3412/D3412M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementoffrictionalpropertiesforbothcontinuousfilamentandspun-stapleyarnsunderboundaryfrictionconditions.1.2Thistestmethodhasbeenusedwithyarnshavinglineardensitiesrangingfrom1.5to400tex,butmaybeusedwithyarnsoutsidetheseranges[15to3600denier].NOTE1—Forcoefficientoffriction,yarntometal,seeTestMethodD3108/D3108M.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotnecessarilyexactequivalents;therefore,toensureconformancewiththestandard,eachsystemshallbeusedindependentlyoftheother,andvaluesfromthetwosystemsshallnotbecombined.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD1776PracticeforConditioningandTestingTextilesD1907TestMethodforLinearDensityofYarn(YarnNum-ber)bytheSkeinMethodD2258PracticeforSamplingYarnforTestingD3108/D3108MTestMethodforCoefficientofFriction,YarntoSolidMaterialD4849TerminologyRelatedtoYarnsandFibers3.Terminology3.1ForallterminologyrelatingtoD13.58,YarnsandFibers,refertoTerminologyD4...
