Designation:D3260−01(Reapproved2011)StandardTestMethodforAcidandMortarResistanceofFactory-AppliedClearCoatingsonExtrudedAluminumProducts1ThisstandardisissuedunderthefixeddesignationD3260;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheevaluationofthemortarandacidresistanceofclearprotectivecoatingfactoryappliedtoextrudedaluminumsubstrates.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C207SpecificationforHydratedLimeforMasonryPur-posesD823PracticesforProducingFilmsofUniformThicknessofPaint,Varnish,andRelatedProductsonTestPanels3.SummaryofTestMethod3.1Panelsthathavebeenbuffed,cleaned,neutralized,andcoatedwiththematerialbeingevaluatedareexposedtofreshlypreparedmortarandtoahydrochloricacidsolution.4.SignificanceandUse4.1Thistestmethodwillprovidedifferentiationbetweentypesofcoatingsforacidandmotorresistanceprovidingthecoatingisappliedinauniformcontinuousfilmwithaspecifiedfilmthickness.5.Reagents5.1Acid—Tenvolumepercentsolutionofcommercialgradehydrochloricacid(31.4to31.8%HCl,20°Bé)indistilledwater.5.2CleaningSolution—Analkalinecleaner3intheconcen-trationrecommendedbythemanufacturer,usually45to60g/L(6to8oz/gal)ofwater.ThepHofthesolutionshouldbebetween11.4and12.2.5.3Lime—BuildinglimecomplyingwithSpecificationC207.5.4NeutralizingSolution—Preparefromastablefree-flowing,granularmaterialhavingachromatebase4asrecom-mendedbythesupplier,usuallyataconcentrationof90to120g/L(12to16oz/gal)ofwater.5.5Sand...
