1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 22 Revised and Retyped was: 8 pages1982 06 24 B/118402TP 3.6.1, 3.6.2, revised, 3.6.4 deleted1977 05 12 SM/EQ8225TP ReleasedWP 3948-a Page 1 of 5REPAIR PRIMER, AIR DRYING SK-M6J9566-A1. SCOPEThe mat
2、erial defined by this specification is a repair primer. Thematerial should be so formulate d as to obtain the ultimate in leveling andmaximum hold out properties after baking of the enamel. The material shallbe suitable for pneumatic and electrostatic spray application.2. APPLICATIONIn general the m
3、aterial is used for repair on interior and exteriorsu rfaces if the primer and/or enamel coat including the metallicbasecoat/clearcoat system is sanded through or cut through by mechanicaldamage to the bare metal. The material must be air drying.3. REQUIREMENTS3.1 COMPOSITION3.1.1 Vehicle Synthetic
4、Resin3.1.2 Non-Volatile(FLTM EU-BI 2-1)According to approved initial sample report +/- 1 %.3.1.3 PigmentInert pi gments and fillers to obtain the desired color andsanding properties.3.1.4 CompatibilityTh e material shall be compatible with xylene S-M14J245-A,thinner SK-M14J9556-A or equivalent.3.1.5
5、 ToxicityConte nts of toxic components, e.g. benzene, chlorinatedhyd rocarbons, lead compounds etc., shall conform to thesafety regulations currently prevailing in the plant and/orcountry where the material shall be used. The u se of cadmiumis prohibited.ENGINEERING MATERIAL SPECIFICATIONSK-M6J9566-
6、AWP 3948-b Page 2 of 53.2 PHYSICAL PROPERTIES3.2.1 Package Viscosity(FLTM EU-BI 11-1)According to approved initial sample report +/- 5 seconds.3.2.2 Density(FLTM EU-BI 2-2)According to approved initial sample report +/- 0.02.3.2.3 Flash PointThe f lash point shall conform to the safety regulationsap
7、p licable to the plant and/or country where the materialshall be used.3.2.4 Storage Stability(FLTM EU-BI 2-3)During a storage of 3 months at room temperature, thematerial as received shall not gel or liver upon standing.An increase of the viscosity of more than 15 seconds is notpermitted.3.3 PREPARA
8、TION OF TEST PANELS3.3.1 SubstrateZinc phosphated Ford Standard Test Panels according toUMA 18003.3.3.2 Primer and EnamelAccordi ng to FLTM EU-BI 3-2, Method B,b, but with thefollowing deviation:Tes t panels primed with electrocoat primer S-M64J4-C oreq uivalent plus primer surfacer SK-M6J9556-A or
9、equivalentare san ded through to the bare metal in the center of thetest panel in an area of about 30 mm diameter using sandingpaper of 400 grit and cleaning petrol, and then are wiped offwith a clean lint free cloth saturated with cleaning petrol.Air Drying Repair:Repai r sanded through area applyi
10、ng repair primerSK-M6J9566-A.Spray viscosity: As specified by the vendorDry film thickness, min 20 micrometreENGINEERING MATERIAL SPECIFICATIONSK-M6J9566-AWP 3948-b Page 3 of 5Sand with sanding paper 400 grit and cleaning pe trol after 15minutes air dry and wipe off with clean lint free clothsaturat
11、ed with cleaning petrol.Spra y surface with catalyzed acrylic baking enamelS-M32J100-A/E white or black or basecoat/clearcoatS-M32J110-A/111-A silver metallic. Dry film thickness 40 -50 micrometre, basecoat /clearcoat 50 - 55 micrometre, bakingcycle according to material specifications.Note: Use S-M
12、32J100-A/E white for tests according tosections 3.5.3, 3.6.1, 3.6.2, 3.6.4, and S-M32J100-A/E blackfor the test according to 3.6.3. In addition usebasecoat/clearcoat S-M3 2J110-A/111-A silver metallic for alltests.3.3.3 AgeingPanels shall be aged 16 hours at 45 C or 72 hours at roomtemperature, prio
13、r to testing.3.4 APPEARANCE3.4.1 LevelingIn connection with enamel the spray primer film shall levelwith a minimum orange peel effect.3.4.2 Hold outThere shall be no evidence of dulling or strike in ordi fference in gloss when enamel is applied to sanded oruns anded spray primer. Sanding scratches s
14、hall be hardlyvisible.3.5 FILM PROPERTIES3.5.1 Hand Sanding CharacteristicThe spray primer when applied and air dried acco rding to item3.3 ai r drying repair, shall wet sand smoothly withoutclogging the paper (400) and with a minimum of sandingscratches.3.5.2 ColorAs ag reed with Material Laborator
15、y, responsible ProductEngineering System and affected area of ManufacturingEn gineering preferably grey approx. RAL 7003 or BS-381-C,No. 694.ENGINEERING MATERIAL SPECIFICATIONSK-M6J9566-AWP 3948-b Page 4 of 53.5.3 Adhesion(FLTM EU-BI 6-1, Method B)Enamel over sanded and unsanded spray primer. No chi
16、pping.3.6 RESISTANCE PROPERTIES3.6.1 Salt Fog Resistance 120 h(FLTM EU-BI 3-1)No blistering and rusting and no more than 4 mm rust creepageand loss of adhesion from a line scribed to the bare metal.3.6.2 Water Resistance 120 h(FLTM EU-BI 4-1)No blistering or loss of gloss.3.6.3 Florida ExposurePanel
17、s shall be exposed in the Miami, Florida area for oneyear , 0.09 radius facing south. Panels shall diagonallyscribe t o bare metal. After exposure panels shall exhibitnei ther blistering, peeling, more than 4 mm rust creepagefrom the scribed lines nor film breakdown due to defectscaused by the spray
18、 primer.3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,constr uction, color, processing or labeling of the material
19、orig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of th
20、e Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification
21、 WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONSK-M6J9566-AWP 3948-b Page 5 of 54. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expres
22、sion of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity,
23、demonstratingful l compliance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
