Designation:D2134−93(Reapproved2012)StandardTestMethodforDeterminingtheHardnessofOrganicCoatingswithaSward-TypeHardnessRocker1ThisstandardisissuedunderthefixeddesignationD2134;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftherelativedegreeofsurfacehardnessoforganiccoatingsusingaspecificapparatuswidelyusedinthecoatingsindustry.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thistestmethoddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D823PracticesforProducingFilmsofUniformThicknessofPaint,Varnish,andRelatedProductsonTestPanelsD1005TestMethodforMeasurementofDry-FilmThick-nessofOrganicCoatingsUsingMicrometersD1186TestMethodsforNondestructiveMeasurementofDryFilmThicknessofNonmagneticCoatingsAppliedtoaFerrousBase(Withdrawn2006)3D1400TestMethodforNondestructiveMeasurementofDryFilmThicknessofNonconductiveCoatingsAppliedtoaNonferrousMetalBase(Withdrawn2006)3D3924SpecificationforEnvironmentforConditioningandTestingPaint,Varnish,Lacquer,andRelatedMaterialsD4138PracticesforMeasurementofDryFilmThicknessofProtectiveCoatingSystemsbyDestructive,Cross-SectioningMeans3.SignificanceandUse3.1Sward-typehardnessrockerinstrumentshavebeenusedbythecoatingsindustryformorethanahalfacenturyasanondestructivetestinstrumenttomeasurecureandultimatesurfacehardnessoforganiccoatings(seeRefs.(1)through(11)).4Anacceptedstandardtestmethodfortheuseofsuchaninstrumentislongoverdue.3.2InprevioustaskgroupworkdesignedtoestablishanASTMmethodformeasuringhardnessoforganiccoatings...
