Designation:D2524−13StandardTestMethodforBreakingTenacityofWoolFibers,FlatBundleMethod—1⁄8-in.(3.2-mm)GageLength1ThisstandardisissuedunderthefixeddesignationD2524;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthebreak-ingtenacityofwoolfibersasaflatbundlewitha1⁄8-in.(3.2-mm)clampseparation.1.2Thistestmethodisespeciallyadaptedtothefiberbundleclampsandstrengthtestinginstrumentsspecified,butmaybeusedonothertensiletestingmachineswhenequippedwithappropriateadapterstoaccommodatetheprescribedclamps.1.3Thistestmethodisapplicabletowoolinanyformwhichcanbehand-combedintosmallbundlesofparallelizedfibers.NOTE1—OthertestmethodsformeasuringbreakingtenacityoffiberbundlesincludeTestMethodsD1294,D1445,andD540.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD540MethodsofTestingMan-MadeStapleFibers;Re-placedbyD3660(Withdrawn1973)3D1294TestMethodforTensileStrengthandBreakingTe-nacityofWoolFiberBundles1-in.(25.4-mm)GageLengthD1445TestMethodforBreakingStrengthandElongationofCottonFibers(FlatBundleMethod)D1776PracticeforConditioningandTestingTextilesD4845TerminologyRelatingtoWoolD2525PracticeforSamplingWoolforMoisture3.Terminology3.1ForallterminologyrelatedtoD13.13,WoolandFelt,seeTerminologyD4845.3.1.1Thefollowingtermsarerelevanttothisstandard:breakingtenacity,constant-rate-of-extension(...
