Designation:D4141/D4141M−22StandardPracticeforConductingBlackBoxandSolarConcentratingExposuresofCoatings1ThisstandardisissuedunderthefixeddesignationD4141/D4141M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticecoverstwoacceleratedoutdoorexposureproceduresforevaluatingtheexteriorweatherresistanceofcoatingsappliedtosubstrates.1.2Thetwoproceduresareasfollows:1.2.1ProcedureA—BlackBoxExposure.1.2.2ProcedureC—FresnelReflectorRackExposure.NOTE1—ProcedureBdescribedaHeatedBlackBoxprocedurethatisnolongerincommonuseandhasbeenremovedasofthe2014revisionofthisstandard.1.3Thisstandarddoesnotcoveralltheproceduresthatareavailabletotheuserforacceleratingtheoutdoorexposureofcoatings.Otherprocedureshavebeenusedinordertoprovideaparticulareffect;however,thetwoproceduresdescribedherearewidelyused.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotnecessarilyexactequivalents;therefore,toensureconformancewiththestandard,eachsystemshallbeusedindependentlyoftheother,andvaluesfromthetwosystemsshallnotbecombined.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossD660TestMethodforEvaluatingDegreeofCheckingofExteriorPaintsD661TestMethodforEvaluat...
