Designation:F482−09(Reapproved2014)StandardPracticeforCorrosionofAircraftMetalsbyTotalImmersioninMaintenanceChemicals1ThisstandardisissuedunderthefixeddesignationF482;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthedeterminationofthecorrosive-nessoftank-typeaircraftmaintenancechemicalsonaircraftmetalsandthecorrodibilityofmetalsinthesemaintenancechemicalswithtime.Thedeterminationismadeundercondi-tionsoftotalimmersionbyacombinationofweightchangemeasurementsandvisualqualitativedeterminationsofchange.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautions,seeSection6.2.ReferencedDocuments2.1ASTMStandards:2D235SpecificationforMineralSpirits(PetroleumSpirits)(HydrocarbonDryCleaningSolvent)D329SpecificationforAcetoneD1193SpecificationforReagentWaterE1SpecificationforASTMLiquid-in-GlassThermometers3.SignificanceandUse3.1Thispracticenotonlyprovidesinformationontheaccumulatedeffectsofcorrosionatspecifictimeperiodsunderagivensetofconditions,butalsoprovidesinformationontheinitialrateofcorrosionofvirginmetal,thecorrosionrateofmetalperunittimeafterlongexposure,andtheinitialcorrosionrateofvirginmetalafterlongexposureofthecorrodingfluidtometal.Thetestalsoprovidesameansofdeterminingthedirectioncorrosionwilltakewithtime,al-thoughcausesforincreaseordecreaseinthecorrosivenessandcorrodibilityofmediaandmetal(suchaspassivefilmforma-tionordestruction,depletionofcorrosivecontaminate,andsoforth)asafunctionoftimearenotgiven.4.Apparatus4.1Wide-Mo...
