1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1990-11-02 EP00E01031541000 Released KW conc. J.SchultWP 3948-a Page 1 of 8 PRIMER, REPAIR, STONE CHIP PROTECTION, WSK-M6J166-A120 MICROMETRE, WATER BASED1. SCOPEThe mat erial defined by this specif
2、ication is a water based baking stonechip protective repair primer for exterior automotive application.2. APPLICATIONThis specification was released originally for material used as stone chipprimer for spot repair on bodie s or assemblies where originally stone chipprimer WSK-M6J165-A had been used.
3、3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStanda rd Q-101. A mutually acceptable Control Plan as describedth erein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat
4、 variation in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The IR spectra and thermograms established for i nitial appro
5、val shallconst itute the reference standard and shall be kept on file at thedesignated material lab oratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONINGAll test values indicated herein are based o
6、n ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 COMPOSITION3.4.1 Resin: Water borne synthetic resins.3.4.2 Pigments: Pigments and fillers to obt
7、ain the desired colourand resistance properties.ENGINEERING MATERIAL SPECIFICATIONWSK-M6J166-AWP 3948-b Page 2 of 8 3.4.3 Solvent Emissions see Initial Sample +/- 1 %(ASTM D 3960)This r equirement is as determined by the United StatesEnvironmental Protection Agency Reference Method #24 and isonly ap
8、plicable to materials used in the USA.3.5 MATERIAL PROPERTIES3.5.1 Non-volatile see Initial Sample +/- 2 %;(FLTM BI 102-01) min 55 %The non-volatile conten t shall be determined at viscosity assupplied.3.5.2 Density see Initial Sample +/- 0,02 g/mL(ASTM D 1475)3.5.3 Viscosity as supplied see Initial
9、 Sample +/- 5 s(FLTM BI 111-01)3.5.4 Spray Viscosity as specified by the supplier(FLTM BI 111-01)3.5.5 Storage Stability: 90 daysDuring a storage of 90 days between 5 and 32 C temperature,the m aterial as supplied shall not settle up or cakeinsol uble. After the storage the material must pass allspe
10、cification requirements.3.6 PREPARATION OF TEST PANELSTest panels shall be prepared according to WSK-M6J165-A, para 3.6.3.6.1 Repair Version A3.6.1.1 Preparation of Repair Panels:Test panels are sanded through to bare metal i n thecentre in a spot of 3 0 mm diameter. On one half ofthe test panel, th
11、e topcoat is dry sanded with P360sandpaper. The surface of the test panel shall becleaned with Cleaning Petrol.3.6.1.2 Application of Repair Primer WSK-M6J162-A:Dry film thickness: 10 - 15 micrometre;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.ENGINEERING MATERIAL SPECIF
12、ICATIONWSK-M6J166-AWP 3948-b Page 3 of 8 3.6.1.3 Application of Stone Peck Resistant Repair PrimerWSK-M6J166-A:Dry film thickness: sufficient for spot repair;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.3.6.1.4 Application of Repair Primer WSK-M6J161-A:Dry film thickness:
13、 10 - 15 micrometre;Flash off time: 1 minute.3.6.1.5 Top Coat:Appl ication of current approved black, white andtwo coat silver metal lic top coats; Film thicknessand b aking as specified in the relevant paintmaterial specification.3.6.2 Repair Version B3.6.2.1 Preparation of Repair Panels:Test Panel
14、s are sanded through to bare metal i n thecentre in a spot of 30 mm diameter. On one ha lf ofthe test panel, the topcoat is dry sanded with P360sandpaper. The surfa ce of the test panel shall becleaned with Cleaning Petrol.3.6.2.2 Application of Repair Primer WSK-M6J162-A:Dry film thickness: 10 - 15
15、 micrometre;Air drying: 3 minutes at 23 +/- 2 C;Baking: 10 minutes at 88 C object temperature.3.6.2.3 Application of Stone Peck Resistant Repair PrimerWSK-M6J166-A:Dry film thickness: sufficient for spot repair;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.3.6.2.4 Top Coat
16、:Appl ication of current approved black, white andtwo coat silver metal lic top coats; Film thicknessas specified in the relevant paint materialspecification;Baking: 10 minutes at 100 C.ENGINEERING MATERIAL SPECIFICATIONWSK-M6J166-AWP 3948-b Page 4 of 8 3.6.3 Repair Version C3.6.3.1 Preparation of R
17、epair Panels:Test panels are sande d through to the EC-primer inthe centre in a spot of 30 mm diameter. On one halfof the test panel, the topcoat is dry sanded withP360 sandpaper. The surface of the test panel shallbe cleaned with Cleaning Petrol.3.6.3.2 Application of Stone Peck Resistant Repair Pr
18、imerWSK-M6J166-A:Dry film thickness: sufficient for spot repair;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.3.6.3.3 Application of Repair Primer WSK-M6J161-A:Dry film thickness: 10 - 15 micrometre;Flash off time: 1 minute.3.6.3.4 Top Coat:Appl ication of current approved
19、 black, white andtwo coat silver metal lic top coats; Film thicknessand b aking as specified in the relevant paintmaterial specification.3.6.4 Repair Version D3.6.4.1 Preparation of Repair Panels:Test panels are sande d through to the EC-primer inthe centre in a spot of 30 mm diameter. On one halfof
20、 the test panel, the topcoat is dry sanded withP360 sandpaper. The surface of the test panel shallbe cleaned with Cleaning Petrol.3.6.4.2 Application of Stone Peck Resistant Repair PrimerWSK-M6J166-A:Dry film thickness: sufficient for spot repair;Flash off time: 3 minutes;Baking: 10 minutes at 130 C
21、 object temperature.3.6.4.3 Top Coat:Appl ication of current approved black, white andtwo coat silver metal lic top coats; Film thicknessas specified in the relevant paint materialspecification;Baking: 10 minutes at 100 C.ENGINEERING MATERIAL SPECIFICATIONWSK-M6J166-AWP 3948-b Page 5 of 8 3.6.5 Repa
22、ir Version E3.6.5.1 Preparation of Repair Panels:Test panels are sanded through to bare metal i n thecentre in a spot of 3 0 mm diameter. On one half ofthe test panel, the topcoat is dry sanded with P360sandpaper. The surface of the test panel shall becleaned with Cleaning Petrol.3.6.5.2 Application
23、 of Repair Primer WSK-M6J162-A:Dry film thickness: 10 - 15 micrometre;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.3.6.5.3 Application of Stone Peck Resistant Repair PrimerWSK-M6J166-A:Dry film thickness: sufficient for spot repair;Flash off time: 3 minutes;Baking: 10 min
24、utes at 130 C object temperature.3.6.5.4 Application of Repair Primer WSK-M6J161-A:Dry film thickness: 10 - 15 micrometre;Flash off time: 1 minute.3.6.5.5 Top Coat:Application of current approved matt black top coatfor wet on wet application over body primer.Baking: 10 minutes at 130 C.3.6.6 Repair
25、Version F3.6.6.1 Preparation of Repair Panels:Test panels are sanded through to bare metal i n thecentre in a spot of 3 0 mm diameter. On one half ofthe test panel, the topcoat is dry sanded with P360sandpaper. The surface of the test panel shall becleaned with Cleaning Petrol.3.6.6.2 Application of
26、 Repair Primer WSK-M6J162-A:Dry film thickness: 10 - 15 micrometre;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.ENGINEERING MATERIAL SPECIFICATIONWSK-M6J166-AWP 3948-b Page 6 of 8 3.6.6.3 Application of Stone Peck Resistant Repair PrimerWSK-M6J166-A:Dry film thickness: su
27、fficient for spot repair;Flash off time: 3 minutes;Baking: 10 minutes at 130 C object temperature.3.6.6.4 Application of Repair Primer WSK-M6J161-A:Dry film thickness: 10 - 15 micrometre;Flash off time: 1 minute.3.6.6.5 Top Coat:App lication of current approved catalysed mattblack top coat for wet o
28、n wet application over bodyprimer.Baking: 10 minutes at 100 C.3.6.7 Ageing:Test panels prepared under this specification shall be agedfor at least 72 h at 23 +/- 2 C or 16 h at 45 +/- 1 C beforetesting for resistance properties.3.7 APPEARANCE (Primer only)Col our, gloss and surface finish shall matc
29、h master Trim Sampleand/or Master Appearance Sample as approved by Design.3.7.1 Colour grey to black3.7.2 Gloss matt3.8 PAINT FILM PROPERTIES3.8.1 LevelingThe surface of the stone chip primer shall be smooth withonly little structure and orange peel when applied in a dryfilm thickness of 120 microme
30、tre.3.8.2 Air DryingThe primer shall be tac k free after 1 hour at 23 +/- 2 C andcured after 24 hours wh en applied in a dry film thickness of50 - 60 micrometre.3.9 RESISTANCE PROPERTIES3.9.1 Adhesion No chipping(FLTM BI 106-01, Method B)ENGINEERING MATERIAL SPECIFICATIONWSK-M6J166-AWP 3948-b Page 7
31、 of 8 3.9.2 Stone Chip Resistance, max. 0(FLTM BI 157-04)3.9.3 Salt Spray Resistance, min. 240 h(FLTM BI 103-01)No b listering and no rust on the panel surface and no morethan 3 mm rust creepage and loss of adhesion from a scratchscribed to the bare metal.3.9.4 Water Immersion Test, min. 480 h(FLTM
32、BI 104-01)One hour after test end investigation of adhesion 3.9.1.No blistering, loss of gloss or loss of adhesion accepted.3.9.5 Environmental cycling 3 cycles(FLTM BQ 104-07, Procedure I)Evaluation after 3 h conditioning at 21 - 25 C.No c racks, no blistering, no change in appearance or anyother f
33、ailure caused by the stone chip primer.3.10 FLORIDA WEATHERING 12 months(FLTM BI 160-01)Test pa nels or specimens painted according to para 3.6 of thisspecification and scribed with a “St. Andrews cross“ shall beexpos ed in the area of Miami, Florida, 5 deg facing south for 12months exposure time.Ev
34、aluation:No blistering, peeling, cracking, crazing, chalking, yellowing, lossof gloss or any other d eterioration caused by the stone chip primer.Test specimen shall be equal to or better than the Master Sampleapproved by Materials Laboratory of Product Engineering.3.10.1 Condensing humidity test, 2
35、4 h No blistering(ASTM D 2247)The Florida Panels shall be tested after evaluation 3.10.3.10.2 Adhesion No chipping(FLTM BI 106-01, Method B)Adhesion shall be tested 24 h after test 3.10.1.3.11 ADDITIONAL REQUIREMENTSTest Panels and painted parts prepared according to thisspecification shall meet all
36、 requirements of performancespecifications for Vehicle Body WSK-M2P136-A.ENGINEERING MATERIAL SPECIFICATIONWSK-M6J166-AWP 3948-b Page 8 of 8 3.12 QUALITYThe primer must be adaptable for application in accordance withappropriate Ford Motor Company Process Specification U-C800.The primer must be compa
37、tible with all related materials e.g.:sealers, adhesives, electrocoat primers, primer surfacer and top coatmaterials.3.13 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pr ior to
38、 making any changes in the properties, composition,con struction, color, processing or labelling of the material originallyapproved under this specification, whether or not such changes affectthe materials ability to meet the specification requirements, theSupplier shall notify Purchasing, Toxicolog
39、y and the affectedMaterials Engineering activity of the proposed changes and obtain thewritten approval of the Materials Engineering activity. Testdata, test samples and a new code identification are to be submitted withthe request.Substance restrictions imposed by law, regulations or Ford apply tot
40、he materials addressed by this document. The restrictions aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMat erials defined by this specification must hav
41、e prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffect ed Purchasing, Design and Materials Engineering activity. Uponrequest, the supplier shall submit to the affected Materials En
42、gineeringactivity its own laboratory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecimen s for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List. 5. GENERAL INFORMATIONThe information given below is provided for assistance and clarificationand does not represent requirement(s) to this specification.5.1 DENSITY OF THE DRY FILM see Initial Sample +/- 0,02 kg/L(FLTM BI 154-02)5.2 FLASH POINT see Initial Sample(ASTM D 56)
