1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1993 04 01 EP00E10258813000 Release KWWP 3948-a Page 1 of 9 PRIMER, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J35-A125 MICROMETRE FILM BUILD, BLACK, LEAD FREE,175 C BAKING TEMPERATURE, INITIAL FILLMAKEUP FEED, WATE
2、RBORNE CATHODIC ELECTROCOAT, WSK-M64J35-A2RESINMAKEUP FEED, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J35-A3PIGMENT, BLACK, LEAD FREEPRIMER, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J35-C125 MICROMETRE FILM BUILD, GRAY, LEAD FREE,175 C BAKING TEMPERATURE, INITIAL FILLMAKEUP FEED, WATERBORNE CATHODIC EL
3、ECTROCOAT, WSK-M64J35-C2RESINMAKEUP FEED, WATERBORNE CATHODIC ELECTROCOAT, WSK-M64J35-C3PIGMENT, GRAY, LEAD FREE1. SCOPE:The mate rials defined by these specifications are non-yellowing cathodicelectroc oat primer for nominal 25 micrometre film build and associatedmake-up feed components. The materi
4、als shall not contain lead.2. APPLICATION:These sp ecifications were released originally for a paint system used aselectroc oat primer on vehicle bodies, sheet metal components and smallparts. The primer will provide good corrosion resistance, good adhesionand enamel appearance properties.WSK-M64J35
5、-A1/WSK-M64J35-C1:This pri mer is applied directly over zinc phosphated cold rolled steel,electrod eposited zinc or zinc/nickel alloy coated steel and any othertype of precoated steel, as well as to aluminum substrates. Typicalapplications are as follows:. Visible Exterior Surfaces:The electrocoated
6、 primer film will be followed by a primer surfacerand an exterior enamel colour coat. The electrocoat primer, primersurfacer and enamel are all baked separately. Visible Interior Surface:Th e backed electrocoated primer film is followed by an enamelcolour coat.ENGINEERING MATERIAL SPECIFICATIONWSK-M
7、64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 2 of 9. Non-visible Interior, Exterior or Underbody Surfaces:Th e baked electrocoated primer film is not usually followed by anadditional primer or enamel colour coat.WSK-M64J35-A2/WSK-M64J35-C2:This mat erial is make-up feed material used to replenish the resin
8、s ofthe initial fill electrocoat bath.WSK-M64J35-A3/WSK-M64J35-C3:This mat erial is make-up feed material used to replenish the pigments ofthe initial fill electrocoat bath.3. REQUIREMENTS:WSK-M64J35-A1/WSK-M64J35-C1:The cath odic electrocoat primer shall meet all detailed requirements ofthis specif
9、ication.WSK-M64J35-A2/C2/WSK-M64J35-A3/C3:The make -up feed materials shall meet the requirements of para 3.2 and3.4.When fee d material is used in production, the resultant primer shall meetall detailed requirements of this specification.3.1 STATISTICAL PROCESSSu ppliers must conform to the require
10、ments of Ford Quality SystemSt andard Q-101. A mutually acceptable Control Plan as describedth erein is required for material/source approval. Appropriatest atistical tools must be used to analyze process/product data sothat variation in the final product is continually reduced.3.2 INFRARED SPECTROP
11、HOTOMETRY AND/OR THERMAL ANALYSISFo rd Motor Company, at its option, may conduct infrared and/orth ermal analysis of material/parts supplied to this specification.Th e IR spectra and thermograms established for initial approvalsh all constitute the reference standard and shall be kept on fileat the
12、designated material laboratory. All samples shall produce IRsp ectra and thermograms that correspond to the reference standardwhen tested under the same conditions.3.3 CONDITIONINGAl l test values indicated herein are based on material conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5
13、 % relativehu midity for not less than 24 h prior to testing and tested underthe same conditions unless otherwise specified.3.4 COMPOSITION3.4.1 Density See Initial Sample +/- 0.02 g/mL(ASTM D 1475)ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 3 of 93.4.2 Non-volatile
14、See Initial Sample +/- 1 %(FLTM BI 120-08)3.4.3 Weight Loss after baking See Initial Sample, +/- 0.5 %(FLTM BI 120-15, 10 minutes at 175 C)3.4.4 Solvent Emissions, max See Initial Sample +/- 1 %(ASTM D 3960)This requirement is as determined by the United StatesEnvironmental Protection Agency Referen
15、ce Method #24 but isonly applicable to materials used in the USA.3.5 STABILITY3.5.1 Pumping Stability 7 and 21 days(FLTM BI 120-04 or equivalent equipment)After 7 and after 21 days of agitation, the bath materialshall meet the requirements of this specification.3.5.2 Storage Stability 2 monthsDuring
16、 the storage between 5 and 32 C temperature themake-up feed materials as supplied shall not settle up orcake insoluble.3.6 PREPARATION OF TEST PANELS(FLTM BI 103-02)Te st panels shall be prepared according to FLTM BI 103-02, methodB, 2, for all investigations with the following coating conditionsand
17、 film thickness requirements, unless otherwise specified:Coating class: I II IIIFilm Thickness:E-coat Primer 22 - 25 22 - 25 22 - 25Primer Surfacer - 20 - 25 20 - 25Enamel Topcoat - - 40 - 503.6.1 Substrates (Ref. Para. 5.1)Routine investigations:- Standard Steel Panels (EAO only)- Production Steel
18、Panels (NAAO only)Additional for Initial approval only:- Precoated Steel Panels as used in the plant- Aluminum, if used in the plantAll substrates except aluminum shall be zinc phosphated andconform to the requirements of WSK-M3P1-C.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 39
19、48-b Page 4 of 93.6.2 Electrocoat Primer(FLTM BI 120-01)Electrocoat bath temperature (if not otherwise specified bythe supplier): 30 +/- 3 CDry film thickness: 23 - 25 micrometreBaking conditions:EAO: 10 minutes at 175 C(Initial Approval only): 10 minutes at 190 CNAAO: 10 minutes at 180 C and10 minu
20、tes at 200 C3.6.3 Primer SurfacerApplication of current approved primer surfacer, filmthickness and baking as required in the relevant materialspecification.3.6.4 TopcoatApplication of current approved white enamel topcoat forall tests, film thickness and baking as required in therelevant material s
21、pecification.3.6.5 AgeingAll Test Panels prepared according to this specificationshall be aged for at least 72 h at 23 +/- 2 C or 16 h at45 +/- 1 C before testing for resistance properties.3.7 APPEARANCEColour, gloss and surface finish shall match the Initial Sample.3. 7.1 Colour (electrocoat primer
22、 only) See Initial Sample(FLTM BI 109-01)3. 7.2 Gloss (electrocoat primer only) See Initial Sample(FLTM BI 110-01, 60 deg)3.7.3 LevelingThe surface of the electrocoat primer shall be smoothwithout any structure and not more than a minimum of orangepeel when applied and baked as required in 3.6, coat
23、ingclass III.3.7.4 HoldoutNo evidence of dulling, no craters or pinholes and nochange in image clarity when enamel colour coat is appliedover unsanded electrocoat primer per coating class II.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 5 of 93.8 RESISTANCE PROPERTIES3
24、.8.1 Adhesion, max Grade 1(FLTM BI 106-01, Method B, class I, II, III)No chipping or other evidence of film separation betweenany coating interface as applicable.3.8.2 Stone Chip Resistance, max Rating 2 - 3(FLTM BI 157-04, class III)3.8.3 Salt Spray Resistance, min 480 h(FLTM BI 103-01, class I and
25、 III,not for precoated steel)No blistering, no rusting or loss of adhesion more than3 mm from the scribed line.3.8.4 Resistance to Scab Corrosion(FLTM BI 123-01, class III,10 Cycles)Test Panels:a. Bimetallic split coach joint panels per 5.1.5 (NAAOonly)b. Steel panels per 3.6.1.Evaluation:a. No more
26、 than 10 mm rust, blister creepage, or loss ofadhesion at the joint of the bimetallic coach joint.b. No blistering, rusting or loss of adhesion more than3 mm from the scribe line.3.8.5 Water Immersion Test 240 h(FLTM BI 104-01, class I, II, III)No loss of adhesion, no loss of gloss and no blistering
27、accepted.3.8.6 Film YellowingPreparation of Test Panels:Coat a 100 mm X 300 mm steel panel with electrocoat, bakeper 3.6.2 and let cool to room temperature.Apply and bake white enamel topcoat to the electrocoatedpanel as well as to another, non-electrocoated panel.Evaluation:Not more than a slight y
28、ellowing of the electrocoatedversus the non-electrocoated panel is permitted. The primerunder test shall be equal or better than currently usedmaterial.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 6 of 93.8.7 Fume Yellowing(FLTM BI 120-16)Only a slight yellowing is pe
29、rmitted. The primer undertest shall be equal or better than currently used material.3.9 THROWING POWER(FLTM BI 120-02, exceptions noted below)3.9.1 Substrates- Non-phosphated Steel Panels per UMA 18006- Phosphated Steel Panels per 3.6.1- Oiled SubstratesOiled Substrates shall be prepared per FLTM BZ
30、 150-11,Oiling Grade: Normal.3.9.2 Preparation of Throw Power Panels(FLTM BI 120-02, Method C)Note: Throw power panels shall be prepared with the samevoltage and temperature as used in para 3.6.2 to obtain therequired film thickness on phosphated panels.Bake the electrocoat primed panels 10 minutes
31、at 175 Cmetal temperature. Prior to testing 3.9.3, panel edges andthe uncoated end shall be sealed.3.9.3 Throw Power Requirements(FLTM BI 120-02, Method C)Requirements and specified test periods for the definedsubstrates in salt spray test FLTM BI 103-01 are indicatedbelow:Salt mm of protectionSpray
32、 before afterSubstrate/Surface Condition Hours salt spray testStandard Panel - Phosphated 240 200 180Production Panel - Phosphated 240 200 180Standard Panel - Clean 240 170 130Standard Panel - Oiled 120 170 60There shall be no blistering, red rusting or corrosiongreater than the minimum requirements
33、, measured from theelectrocoated end of the electrocoated test panel.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 7 of 93.10 FLORIDA-WEATHERING 12 months(FLTM BI 160-01, class III, solid colour white).Te st panels, scribed with an “X“ shall be exposed in the area ofMi
34、ami, Florida, 5 deg facing south for one year exposure time.Af ter the exposure the surface shall show neither blistering norpeeling nor any other defect caused by the electrocoat primer.No rusting or loss of adhesion more than 3 mm from the scribe line.3.10.1 Water Immersion Test, 24 h No blisterin
35、g(FLTM BI 104-01)The Florida panels shall be tested after evaluation 3.10.3.11 QUALITYTh e primer must be adaptable for application in accordance withappropriate Ford Motor Company Process Specification U-C800.Th e EC-primer must be compatible with all related materials e.g.:sealers, adhesives and p
36、aint materials.3.12 SUPPLIERS RESPONSIBILITYAl l materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pr ior to making any change in the properties, composition,co nstruction, colour, processing or labelling of t
37、he materialor iginally approved under this specification, whether or not suchch anges affect the materials ability to meet the specificationre quirements, the Supplier shall notify Purchasing, Toxicology andth e affected Materials Engineering activity of the proposed changesan d obtain the written a
38、pproval of the Materials Engineeringac tivity. Test data, test samples and a new code identification areto be submitted with the request.Su bstance restrictions imposed by law, regulations or Ford, applyto the materials addressed by this document. The restrictions aredefined in Engineering Materials
39、 Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 8 of 94. APPROVAL OF MATERIALS:Material s defined by this specification must have prior approval by theresponsi ble Materials Engineering activity. Suppliers desiring approvalof their material
40、s shall first obtain an expression of interest from theaffected 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 aqualifie d and authorized represen
41、tative of the test facility,demonstr ating full compliance with all the requirements of thisspecific ation (test results, not nominal values), the materialdesignat ion and code number, and test specimens for Ford evaluation.Fords engineering approval of a material will be based on itsperforma nce to
42、 this specification and on an assessment of suitability forintended processes and/or applications. Upon approval, the material willbe added to the Engineering Material Approved Source List.5. GENERAL INFORMATION:The info rmation below is provided for clarification and assistance inmeeting the requir
43、ements of the specification.5.1 PANEL INFORMATIONNA AO: Test Panels are available from Advanced Coating Technologies,In c., P.O. Box 735, 273 Industrial Dr., Hillsdale, Michigan 49242or the Parker Co., 322 Main Street, Morenci, Michigan 49256.5.1.1 Standard Steel PanelsNAAO: Standard steel panels ar
44、e laboratory quality mildcold rolled steel available clean or zinc phosphated.EAO: Zinc phosphated Test panels prepared in accordancewith Ford Manufacturing Standard U-MA18004/U-MA18005.Non-phosphated Test panels prepared in accordance with FordManufacturing Standard U-MA18006.5.1.2 Production Steel
45、 PanelsProduction steel panels from selected coils of automotivequality steel, oiled or zinc phosphated.5.1.3 Precoated Steel PanelsNAAO: Two side electrogalvanized Steel 50-80 g/m2 panels.EAO: Test panels complying with the relevant grades ofWSB-M1A250-C3 or ESD-M1A311-A.5.1.4 Aluminum PanelsSAE 20
46、36 Aluminum.ENGINEERING MATERIAL SPECIFICATIONWSK-M64J35-A1/A2/A3-C1/C2/C3WP 3948-b Page 9 of 95.1.5 Split Coach Joint Bimetallic PanelsSplit coach joint bimetallic panels are manufactured bywelding production steel panels to electrogalvanized panelsand then cutting the panel into two sections prior
47、 to zincphosphating. This allows the candidate material and thecontrol material to be evaluated over identical substrate.5.2 PANEL PREPARATION (NAAO only)Test panels can be prepared and tested at:ACT Testing Laboratories, Inc.P.O. Box 735, 273 Industrial Dr.Hillsdale, Mi. 49242(517) 439-14855.3 CORR
48、ECTIVE ADDITIVESCo rrective additives are only used as recommended by the Supplier.Th e resultant bath material shall meet the requirements of thisspecification.5.3.1 Control Additive, Butyl Glycol WSK-M14J240-A5.3.2 Control Additive, Ethyl Glycol WSK-M14J241-A5. 3.3 Control Additive, Binder Solution WSK-M99J361-A1/-A25.3.4 Control Additive, pH - Value WSK-M97B50-ANAAO only:5.3.5 Control Additive, flow M97B10-A5.4 MATERIAL REFERENCEAl l related materials used for approval of el
