Designation:B117−16StandardPracticeforOperatingSaltSpray(Fog)Apparatus1ThisstandardisissuedunderthefixeddesignationB117;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thispracticecoverstheapparatus,procedure,andconditionsrequiredtocreateandmaintainthesaltspray(fog)testenvironment.SuitableapparatuswhichmaybeusedisdescribedinAppendixX1.1.2Thispracticedoesnotprescribethetypeoftestspeci-menorexposureperiodstobeusedforaspecificproduct,northeinterpretationtobegiventotheresults.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B368TestMethodforCopper-AcceleratedAceticAcid-SaltSpray(Fog)Testing(CASSTest)D609PracticeforPreparationofCold-RolledSteelPanelsforTestingPaint,Varnish,ConversionCoatings,andRelatedCoatingProductsD1193SpecificationforReagentWaterD1654TestMethodforEvaluationofPaintedorCoatedSpecimensSubjectedtoCorrosiveEnvironmentsE70TestMethodforpHofAqueousSolutionsWiththeGlassElectrodeE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodG85PracticeforModifiedSaltSpray(Fog)Testing3.SignificanceandUse3.1Thispracticeprovidesacontrolledcorrosiveenviron-mentwhichhasbeenutilizedtoproducerelativecorrosionresistanceinformationforspecimensofmetalsandcoatedmetalsexposedinagiventestchamber.3.2Predictionofperformanceinnaturalenvironmentshasseldombeencorrelatedwithsaltsprayresultswhenusedasstandalonedata.3.2.1Correlationandextrapo...