Designation:D4141/D4141M−14StandardPracticeforConductingBlackBoxandSolarConcentratingExposuresofCoatings1ThisstandardisissuedunderthefixeddesignationD4141/D4141M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticecoverstwoacceleratedoutdoorexposureproceduresforevaluatingtheexteriorweatherresistanceofcoatingsappliedtosubstrates.1.2Thetwoproceduresareasfollows:1.2.1ProcedureA—BlackBoxExposure.1.2.2ProcedureC—FresnelReflectorRackExposure.NOTE1—ProcedureBdescribedaHeatedBlackBoxprocedurethatisnolongerincommonuse.1.3Thisstandarddoesnotcoveralltheproceduresthatareavailabletotheuserforacceleratingtheoutdoorexposureofcoatings.Otherprocedureshavebeenusedinordertoprovideaparticulareffect;however,thetwoproceduresdescribedherearewidelyused.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossD660TestMethodforEvaluatingDegreeofCheckingofExteriorPaintsD661TestMethodforEvaluatingDegreeofCrackingofExteriorPaintsD662TestMethodforEvaluatingDegreeofErosionofExteriorPaintsD714TestMethodforEvaluatingDegreeofBlisteringofPaintsD772TestMethodforEvaluatingDegreeofFlaking(Scal-ing)ofExteriorPaintsD823PracticesforProducingFilmsofUniformThicknessofPaint,Varnish,andRelatedProductsonTestPanelsD2244PracticeforCalculationofColorTolerancesandColorDiffe...
