GM 4435M-2004 Protective Finishes - Phosphate Type

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1、ENGINEERINGMaterialSpecificationGM4435MSTANDARDSMetalsProtectiveFinishes–PhosphateType2.2GMStandards/Specifications.1ScopeGM500MGM6174MThisspecificationcoverscorrosionprotectivefin-GM510MGM9064PishesforironandsteelwhosebasiccharacteristicGM4298PGM9071Piszincph

2、osphatetreatmentandasubsequentGM4465PGMW3001protectivecompound.Agradewithzincphos-GM6035MGMW3034phateonlymaybedesignated.Asuffixcodesys-GM6047MGMW3059temisprovidedfordesignatingcertainlimitationsoncompounds.3Requirements1.1MaterialDescription.Currentlytheappro

3、ved3.1.MechanicalRequirements.suppliersofthisspecificationprovidecoatings3.1.1Cleanability.Partsmustbefreefromdiewithhexavalentchromateandsomewithoutlubricantsanddrawingcompoundsthatwillad-hexavalentchromate.EffectiveJuly2005onlyverselyaffectthephosphatecoatin

4、g.Seerec-sourceswithhexavalentchromatefreesystemommendedprocessesforcleanability.PartsshallbeintheMATSPCdatabase,approvedwhichshowuncleanablesurfaces,notaffectedbysourcelist.Allchemicalsuppliers/applicatorscur-normalcleaners,shouldbenotedtothemanufac-rentlyint

5、heMATSPCdatabase,approvedsourceturerandspecialtechniques,asrecommendedlist,whoareprovidinghexavalentchromatefreebyoilsupplier,appliedandsonoted.coatingshallsubmitthenameofthechemicals3.1.1.1Somecompoundsknowntocauseclean-currentlyusedandasignedcertificatethatt

6、heiringdifficultiesarechlorinatedoilsandwaxes,coatingsystemishexavalentchromatefree,withsilicones,paraffin,carbonizedoilsandfats,andnohexavalentchromateinfinalproductpercalciumcompoundsfromliming.GMW3059requirements.GMW3034willbeusedasarefereetest.3.1.1.2Limec

7、oatingsareextremelydifficulttoremoveandtheuseoflimeshouldbekepttoa1.1.1DocumentsthatspecifyGM4435M,CodeCminimum.AlternatelubesshouldbeutilizedifshallmeettherequirementsofGM4435M,Codepossible.A.3.1.2AppearanceAndCure.Unlessotherwise1.1.2Useofthisfinishonthreade

8、dsurfacesspecified,thecoloroftheprotectivecoatingsde-and/orbearingsurfacesofjointscouldaffectthescribedhereinshallbeblack.torque-tensionrelationship.Itisrecommendedthatatorque-tens