1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 03 20 N Status No replacement named N. Benipal, NA 2006 03 23 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.11, 3.13, 4 1991 01 02 Released KW, conc. J. Schult Controlled document at www.MATS Copyright 2012, Ford Global Technolog
2、ies, LLC Page 1 of 4 TOPCOAT, ONE PACK, STONE PECK PROTECTION, SMOOTH WSK-M99J367-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a stone peck resistant topcoat for vehicle bodies. 2. APPLICATION This specification was released originally for material used as d
3、ecorative stone peck resistant topcoat on baked enamel on lower body side areas. It may also be used for catalysed repair in connection with hardener WSK-M99J368-A. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FO
4、R PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 COMPOSITION 3.4.1 Resin: Polyester resins and Melamine resins. 3.4.2 Pigments: Pigments to obtain the desired color and resistance properties
5、. 3.4.3 Solvent Emissions see Initial Sample +/- 1% (ASTM D 3960) This requirement is as determined by the United States Environmental Protection Agency Reference Method #24 and is only applicable to materials used in the USA. 3.5 MATERIAL PROPERTIES 3.5.1 Non-volatile see Initial Sample (FLTM BI 10
6、2-01) +/- 3%; min. 55% The non-volatile content shall be determined at viscosity as supplied. 3.5.2 Density see Initial Sample (ASTM D 1475) +/- 0.05 g/mL 3.5.3 Viscosity as supplied 60 +/- 10 s (FLTM BI 111-01, FC #4) ENGINEERING MATERIAL SPECIFICATION WSK-M99J367-A Copyright 2012, Ford Global Tech
7、nologies, LLC Page 2 of 4 3.5.4 Mixing ratio with hardener WSK-M99J368-A (Only if used for catalysed repair). As specified by the supplier, preferred ratio: 3 - 5% 3.5.5 Storage Stability: 90 days During a storage of 90 days between 5 and 32 C temperature the material as supplied shall not settle up
8、 or cake insoluble. After the storage the material must pass all specification requirements. 3.6 PREPARATION OF TEST PANELS 3.6.1 Preparation of Test Panels: (FLTM BI 103-02, Bb) Test Panels shall be painted with current approved two coat silver metallic topcoat materials as well as one coat solid c
9、olor top coat materials (black and white). Ageing: One hour at room temperature 23 +/- 2 C. 3.6.2 Application of WSK-M99J367-A: Dry film thickness: 100 - 120 micrometer Flash off time: 3 minutes Baking: 10 minutes at 130 C (Object temperature) 3.6.3 Repair with Acid Catalyst 3.6.3.1 Repair on baked
10、enamel: Prepare Test Panels as shown in para 3.6.1; Application of WSK-M99J367-A according to 3.5.4 Dry film thickness: 100 - 120 micrometer Flash off time: 3 minutes Baking: 10 minutes at 100 C (Object temperature) 3.6.3.2 Repair on baked stone peck resistant topcoat: Prepare Test Panels as shown i
11、n para 3.6.3.1; Application of WSK-M99J367-A according to 3.5.4 Dry film thickness: 100 - 120 micrometer Flash off time: 3 minutes Baking: 10 minutes at 100 C (Object temperature) 3.6.4 Ageing: Test panels prepared under this specification shall be aged for at least 72 h at 23 +/- 2 C or 16 h at 45
12、+/- 1 C before testing for resistance properties. Panels for investigation of resistance to Wax and Dewax Materials shall be aged for six hours at 23 +/- 2 C. ENGINEERING MATERIAL SPECIFICATION WSK-M99J367-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 4 3.7 APPEARANCE Color, gloss and su
13、rface finish shall match Master Appearance Sample as approved by Design. 3.7.1 Color see MAS - Panel (FLTM BI 109-01) 3.7.2 Gloss see MAS - Panel (FLTM BI 110-01, 60) 3.8 RESISTANCE PROPERTIES 3.8.1 Adhesion Grade 0 (FLTM BI 106-01, Method B) 3.8.2 Stone Chip Resistance 2 (FLTM BI 157-04) 3.8.3 Wate
14、r Immersion Test 240 h (FLTM BI 104-01) One hour after test end investigation of adhesion 3.8.1. No blistering, softening, dulling, color change or loss of adhesion accepted. 3.8.4 Resistance to Water and Soap Spotting, max. Rating 4 - 5 (FLTM BI 113-01) Evaluation according to the AATCC Scale 3.8.5
15、 Resistance to Acid Spotting No discoloration (FLTM BI 113-02) 3.8.6 Salt Spray Resistance 240 h (FLTM BI 103-01) No blistering and rusting on panel surface and not more than 4 mm rust creepage and/or loss of adhesion from a line scribed to bare metal. 3.8.7 Cold Check Resistance 10 cycles (FLTM BI
16、107-02) No cracking or dulling. 3.9 RESISTANCE TO PROTECTIVE WAX COATING AND DEWAXING MATERIAL (FLTM BO 155-01) Additional Test with Waxing Material: U-MJ099-8002 and Dewaxing Material: U-MB005-8037 No cracks, breaks or other surface failures. No stains, softening and change in color tone or gloss.
17、The adhesion of the individual surface coating shall meet the requirements of 3.8.1. ENGINEERING MATERIAL SPECIFICATION WSK-M99J367-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 4 3.10 FLORIDA WEATHERING 12 months (FLTM BI 160-01) Test Panels or Specimens painted according to para 3.6 of
18、 this specification shall be exposed in the area of Miami, Florida, 5 facing south for 12 months exposure time. Examination: Blistering, peeling, cracking, crazing, chalking, color change, loss of gloss or any other deterioration. Test Specimen shall be equal to or better than the Master Sample appr
19、oved by Materials Laboratory of Product Engineering. 3.10.1 Water Immersion Test, 24 h No blistering (FLTM BI 104-01) 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. 3.12 QUALITY The top
20、 coat must be adaptable for application in accordance with the appropriate Ford Motor Company Process Specification. The top coat must be compatible with all related materials. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 DENSITY OF THE DRY FILM See Initial Sample (FLTM BI 154-02) +/- 0.02 kg/L
