Designation:B680−80(Reapproved2014)StandardTestMethodforSealQualityofAnodicCoatingsonAluminumbyAcidDissolution1ThisstandardisissuedunderthefixeddesignationB680;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversatestforthequalityofsealofporousanodiccoatingsonaluminumanditsalloys.Itisbaseduponthelossinmassofthecoatingafterimmersioninawarmphosphoric-chromicacidsolution.1.2Thistestmethodisapplicabletoanodiccoatingsin-tendedforexposuretotheweather,orforprotectivepurposesincorrosivemedia,andwhereresistancetostainingisimpor-tant.1.3Thistestmethodisnotapplicableto:1.3.1Hardcoatings,whichnormallyarenotsealed.1.3.2Anodiccoatingsthathavebeensealedonlyindichro-matesolutions.1.3.3Anodiccoatingsthathaveundergoneatreatmenttorenderthemhydrophobic.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B137TestMethodforMeasurementofCoatingMassPerUnitAreaonAnodicallyCoatedAluminumD1193SpecificationforReagentWater3.SignificanceandUse3.1Thistestmethoddescribesadestructivetestprocedureformeasuringthedegreeofsealoftheporosityinanodicoxidecoatings.Lowcoatingmasslossisanindicationofgoodsealqualityandoftheabilityofthecoatingtoresiststainingand“blooming”inmanytypesofservice.3.2Thistestmethodissuitableforqualitycontrolpurposeswithinmanufacturingoperationsandfordeterminingwhetheranodizedpartsmeetsealqualityrequirementsinapplicablespecifications.4.Apparatus4.1LaboratoryBalance,accurateto1mg.4.2GlassContainer,meansofheatingandstirring...
