KeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comKeithLeggASETSDefense TechnicalManagerRowanTechnologyGroupLibertyville,IL8/2009DLAShelfLifeSymposiumHexavalentchromeissuesandoptionsKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comTopicsUsageofCr6+inDoDCr6+asashelflifeissueRegulatoryissuesAlternativesindevelopment,qualification,useInformationresourcesKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comUsageKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comCr6+usageinDoDCr6+‐containingcoatingsCr6+processes,non‐Cr6+coatingsChromateconversioncoatingsChromatesealersChromatedprimersChromatewashesChromatedmetallic‐ceramicsHardchromeplatingChromicacidanodizingChromicacidpassivationCr6+(CrVI, hexavalent chrome, chromate) is our primary corrosion control materialMakes coating systems self-healingCr6+-containing coatings are a problem for sustainment (repaint, touch-up, corrosion control)Cr6+processes are only a problem for OEM and depotKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comTypicalcoatingstackupsSteelCd plateChromate conversion coatChromated primerHigh VOC topcoatAluminum alloyAnodize (or not)Chromate conversion coatChromated primerHigh VOC topcoatKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comCr6+makesproductionandsustainmentdifficultA problem to put on:Aircraft repainting:25μg m-3allowed in paint hanger5μg m-3for operatorA problem to take off:Maintainer releases Cd and Cr6+dustKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comCr6+asshelflifeissueItemsmustsurvivestorageMunitions,sparesWithoutCr6+corrosioncoatingdamagewillnothealandcorrosionandSCCcanoccurUAVsmustoperaterightoutoftheboxKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comESOHKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comRegulatoryissuesOSHACr6+PEL5μgm‐3RoHSCr6+<0.1at%MilitaryandaerospaceexemptUpcomingUSRoHS?HR2420,nodefense,aerospaceexemptionyetREACH(noDefenseExemptionasofnow,exceptinUK)SodiumDichromateisnowacandidatesubstanceforAnnexXIV(forauthorization)ButnotaprioritysubstancebecauseeasytogetaroundECHAhintsthatmayincludeallchromatesinnextfewyearsIssueforsustainmentofoursystemsinEuropeREACHandRoHSissuesforforeignsalesKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comDoDMemoonCr6+April8‘09OSDissuedmemorestrictingCr6+use,unlessnocost‐effectivealternativeswithsatisfactoryperformanceRequiresProgramExecutiveOfficer(PEO)andCorrosionControlandPreventionExecutive(CCPE)tocertifyifnoacceptablealternativeEffectwillbetoforceadoptionofCr6+‐freecoatingsandproductionmethodsKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comAlternativesunderdevelopment,qualification,implementedKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comCr6+‐freecoatingsMaterialStatusofalternativesChromate conversioncoatingTrivalent chrome and non-Cr commercially available. Not yet asgood as Cr6+. Used on cars, Boeing 777, various militarysystems, USAF T.O. 1-1-8 PrekoteChromate primersNon-Cr primers commercially available. Used on F-35, AH-64Apache. Performance good on Cr6+conversion coating. Movingtoward total non-Cr6+Chromate finish systemLow temperaturepowder coat and UV curable finishes invalidation to replace primer/topcoat for aircraft and vehicles.No Cr6+, low VOC. In developmentChromate conversion ofMgTagnite now used on EFV gearbox, some helicoptercomponents. Performance much better than Cr6+conversionand anodize. Limited DoD use. Keronite availableMetallic-ceramicsLow-Cr and non-Cr available commercially. PerformanceuncertainChromate washesDirect-to-metal used for MRAP. Poor performanceKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comCr6+‐freeprocessesMaterialStatusHard chrome platingHVOF on F-35 landing gear, all new commercial and militarylanding gear. Being implemented for overhaul at OO-ALC.Electroplates such as nCo-P in validationChromic acid anodizeTFSAA approved by NAVAIR, BSAA by BoeingKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comHowwelldoalternativeswork?IngeneralfinishsystemsnotquiteasgoodaschromateButgettingalotbetterTotalCr6+‐freefinishsystemsnotthereyet,butprobablywillbeasgoodaCr6+in<5yrsTotalCr6+‐freefinishsystemscanworktodayonlow‐riskpartsTendtobehardertodo,easiertomessupMuchmoresensitivetoprocessconditionsRequiresbetterQC,inspectionHVOFmuchbetterthanhardchromeTagnitemuchbetterthanHAE,Dow17etcforMgCr6+sealing+Deftnon‐CrprimerbetterthanstandardchromatedsystemonF‐35DefthasnewtotalCr‐freefinish.StillundertestKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comWhatdoesthefuturehold?Movetowardchrome‐freeprimerandnon‐chromateconversionover5‐10yearsImmediatelyfornewweaponssystemsMovetowardCr6+‐freeUVcurefinishesforaircraftandvehiclesnext5yearsorsoMuchfasterturnaround,eliminatesprimerHVOFinplaceofhardchromeonallnewsystemlandinggear,manyhydraulicsandsomelegacysystemsHVOFforrepaironmostlegacylandinggearandsomehydraulicsKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comASETSDefensesourcesofinformationKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comASETSDefensehttp://www.asetsdefense.orgQuickinformation onalternativesASETSDefenseworkshopagendas,briefings,summaries(HCATmeetingscoming soon)DatabaseTeam WorkSpacesTools to beaddedKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comQuickLinksbasicinformationKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comDatabase– SimplesearchDesigned to answer question “Whatalternative to hard chrome (etc) is available(authorized, implemented, spec’d) for mytype of system and application?”KeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comDetailsearchSearch for specific materials, systems,tests, people, organizationscorrosionKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comDatabaseDocumentsKeithLegg847‐680‐9420klegg@rowantechnology.comhttp://www.asetsdefense.orgTeamingwebsite:www.materialoptions.comASETSDefense’09CominginSeptemberASETSDefense’09:SustainableSurfaceEngineeringforAerospaceandDefenseDenver,August31‐September3,2009Aircraft,ships,vehiclesAlternativestochromateprimers,sealers,conversioncoats,lowVOCpaintsystems,hardchrome,CdplateStackups,hydraulics,fasteners,electricalconnectors