Designation:D607−82(Reapproved2012)StandardSpecificationforWetGroundMicaPigments1ThisstandardisissuedunderthefixeddesignationD607;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisspecificationcoverstwotypesoffinelydividedmuscovitemica,commerciallyknownaswetgroundmica,suitableforuseinthemanufactureofprotectivecoatings.2.ReferencedDocuments2.1ASTMStandards:2D185TestMethodsforCoarseParticlesinPigmentsD280TestMethodsforHygroscopicMoisture(andOtherMatterVolatileUndertheTestConditions)inPigmentsD716TestMethodsforEvaluatingMicaPigmentD1208TestMethodsforCommonPropertiesofCertainPigments3.CompositionandProperties3.1Thepigmentsshallbemadebywetgrindingmuscovitemicaandshallconformtotherequirementsforpropertiesprescribedasfollows:TypesARegular325MGradeBFineGradeApparentdensity,max,lb/ft3(g/cm3)12.0(0.2)12.0(0.2)Moistureandothervolatilematter,max,weight%0.50.5Grit,max,weight%0.50.5Coarseparticles,max,weight%:TypesARegular325MGradeBFineGradeTotalresidueretainedonaNo.140(106-µm)sieve0.10.01TotalresidueretainedonaNo.325(45-µm)sieve12.03.0Ignitionloss,max,weight%(drybasis)5.05.03.2Thecolorshallbewithinmutuallyagreeduponlimitsofastandardacceptabletoboththepurchaserandtheseller.4.Sampling4.1Twosamplesshallbetakenatrandomfromdifferentpackagesfromeachlot,batch,day’spack,orotherunitofproductioninashipment.Whennomarkingsdistinguishingbetweenunitsofproductionappear,samplesshallbetakenfromdifferentpackagesintheratiooftwosamplesforeach5tons(inch-poundorSI),exceptthatforshipmentsoflessthan10000lbtwosamplesshallbetaken.Attheoptionofthepurchaserthesamplesmaybetestedseparatelyorafterblendinginequalquantitiesthesamplesfromthesameproductionunittoformacompositesample.5.TestMethods5.1Testsshallbeconductedinac...
