Designation:D4158−08(Reapproved2020)StandardGuideforAbrasionResistanceofTextileFabrics(UniformAbrasion)1ThisstandardisissuedunderthefixeddesignationD4158;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisguidecoversthedeterminationoftheresistancetoabrasionofawiderangeoftextilematerialsusingtheuniformabrasiontestinginstrument.Fabricsofalltypesincludingcarpets,garmentsandnonwovensmaybetestedunderthismethod.NOTE1—Otherproceduresformeasuringtheabrasionresistanceoftextilefabricsaregivenin:TestMethodsD3884,D3885,D3886,D4157,D4966,andAATCCTestMethod93.1.1.1Provisionsareprovidedfortestingspecimensindryandwetconditions.Fouroptionsforevaluationareincluded:Option1—FabricRuptureOption2—MassLossOption3—ThicknessLossOption4—BreakingStrengthLoss1.1.2Provisionisprovidedfortestingspecimensinthewetstate.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasthestandard.Withinthetext,theinch-poundunitsareshowninparentheses.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combin-ingvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMSt...