1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2011 07 14 Revised Odor Requirements added W. Janitschke, EU 2003 04 29 Revised Para 3.0 inserted; para 3.1, 3.2, 3.18, 3.19 and 4 deleted, para 3.10 and 5.1 revised 2002 01 10 Revised Added WSK-M5G39-B3 W. Scholz Controlled document a
2、t www.MATS Copyright 2011, Ford Global Technologies, Inc. Page 1 of 4 COATING, UNDERBODY REPAIR, WATER DISPERSION, HIGH WSK-M5G39-B TEMPERATURE STORAGE STABILITY COATING, UNDERBODY REPAIR, WATER DISPERSION, HIGH WSK-M5G39-B3 TEMPERATURE STORAGE STABILITY 1. SCOPE The material defined by this specifi
3、cation is a water dispersion type, solvent free, air and heat drying underbody coating based on styrene-butadiene-rubber. 2. APPLICATION This specification was released originally for material used for the repair of uncoated body skid areas on non-visible areas of the underbody. This material is mai
4、nly applied to grease free panels but also to adjacent electrocoated and PVC underbody coated areas. Prior to the release for a particular application and in addition to the requirements specified herein, full evaluation under actual production conditions must be ensured by affected Component Engine
5、ering activity. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on ma
6、terial conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Note: After 90 minutes drying at 23 +/- 2 C after application the material shall have reached an adhesi
7、on to withstand the water leak test in normal production operations without wash-off or displacement. Unless otherwise specified, tests shall be carried out on 300 x 100 x 0.8 - 0.9 mm panels prepared as follows: a) on degreased test panels, b) on test panels prepared according to FLTM BI 120-01 c)
8、on test panels prepared according to FLTM BI 120-01, and coated with following PVC underbody coatings: SK-M5G9503-A 3.3 COLOR Dark gray to black (after drying) ENGINEERING MATERIAL SPECIFICATION WSK-M5G39-B/B3 Controlled document at www.MATS Copyright 2011, Ford Global Technologies, Inc. Page 2 of 4
9、 3.4 SOLIDS 55% min (FLTM BV 150-10) 3.5 ASH 60% max (FLTM BV 150-10) 3.6 DENSITY AT 20 C 1.36 kg/L max (ASTM D 1475) 3.7 VISCOSITY at 20 C (Rotational Viscosimeter Brookfield RVT/D, spindle no. 4 (1 rpm, 4 minutes measuring time) 3.7.1 As Received 90 - 160 Pas 3.7.2 After Aging, 160 Pas max (WSK-M5
10、G39-B: 336 h at 28 +/- 2 C) (WSK-M5G39-B3: 336 h at 40 +/- 2 C) 3.8 SURFACE CONDITION The surface shall be dry to touch, free from cracks, bubbles or pin holes and without staining or discoloration. Test Method: . Airless spray coat test panels prepared according to para 3.2, with material under tes
11、t to a dry film thickness of 0.4 to 0.5 mm . Examine specimens: a) after 90 minutes b) after 24 h conditioning at 23 +/- 2 C followed by 120 h aging at 70 +/- 2 C , then 1 h at 23 +/- 2 C. 3.9 ABRASION RESISTANCE (ASTM D 968) There shall be no exposed metal area after No loss of adhesion 200 L grave
12、l impact. on and around the area of stone impact. Test Method: . Prepare test specimens in accordance with para 3.8. . After conditioning for 24 h at 23 +/- 2 C, 120 h aging at 70 +/- 2 C and 1 h at 23 +/- 2 C determine the abrasion resistance according to ASTM D 968, except I.D. of tube 25 mm and a
13、t a gravel throughput rate of 30 - 40 L/h. For each specimen a 5 L volume of fresh gravel shall be used. Check for abrasion resistance and loss of adhesion after the above gravel impact. Continue abrasion test until exposure of metal area and again check for loss of adhesion. ENGINEERING MATERIAL SP
14、ECIFICATION WSK-M5G39-B/B3 Controlled document at www.MATS Copyright 2011, Ford Global Technologies, Inc. Page 3 of 4 Gravel: Type “GABBRO“ grain size 5 - 8 mm Supply Source: ODENWAELDER HARTSTEIN INDUSTRIE GMBH Lise-Meitner-Str. 35 D 63457 Hanau 3.10 COLD ADHESION AT - 40 C No chipping or flaking (
15、FLTM BV 153-04, Method A, para 4 and 5, no cracking, no loss of 100 mm mandrel) adhesion Prepare test specimens in accordance with para 3.8. After conditioning for 24 h at 23 +/- 2 C, 120 h aging at 70 +/- 2 C and 1 h at 23 +/- 2 C, test specimens according to FLTM BV 153-04, Method A, para 4 and 5,
16、 100 mm mandrel. 3.11 CORROSION RESISTANCE (ASTM B 117) The material shall protect the test panel from corrosion for a salt spray exposure period of 240 h. It shall show no expansion, flaking or loss of abrasion resistance. No loss of adhesion on and around the area of stone impact. Test Method: . P
17、repare test specimens in accordance with para 3.8. . After conditioning for 24 h at 23 +/- 2 C, 120 h at 70 +/- 2 C and 1 h at 23 +/- 2 C, expose specimens for 240 h to salt spray according to ASTM B 117. . Condition for 24 h at 23 +/- 2 C and test for abrasion resistance per para 3.9, except omit a
18、ging. 3.12 ENVIRONMENTAL CYCLING No blistering, chipping or flaking, no loss of adhesion. Test Method: . Specimen preparation according to para 3.8. . After 24 h at 23 +/- 2 C, 120 h aging at 70 +/- 2 C and 1 h at 23 +/- 2 C, subject test panels five times to the following cycle: 4 h at - 40 +/- 2 C
19、 4 h at 80 +/- 2 C 16 h at 38 +/- 2 C and 98 +/- 2% RH 3.13 FLOW RATE 2 mm max (FLTM BV 151-03, para 1 - 3, wet film thickness 0.8 - 1.0 mm, 23 +/- 2 C) ENGINEERING MATERIAL SPECIFICATION WSK-M5G39-B/B3 Controlled document at www.MATS Copyright 2011, Ford Global Technologies, Inc. Page 4 of 4 3.14 A
20、DHESION The material shall not be peeled-off in a coherent film. Test Method: . Specimen preparation according to para 3.8, except a dry coating thickness of 0.5 mm, beginning at one edge of the test panel and tapering to zero towards the other end. . After 24 h at 23 +/- 2 C, 120 h at 70 +/- 2 C an
21、d 24 h at 23 +/- 2 C, make two cuts through the coating along the 300 mm length of the test panel and 30 mm apart and try to peel-off coating, starting at the edge with lowest film thickness. 3.15 SPRAYABILITY The material shall be a smooth homogeneous mixture, free from foreign material and suitabl
22、e for use in airless spray equipment. It shall spray evenly and rapidly with no tip clogging of fluctuations in the spray pattern and with a min spray back and fogging. 3.16 QUALITY The material shall be of uniform quality, free from foreign materials and properties detrimental to normal production
23、use. 3.17 ODOR, Rating 3 max (FLTM BO 131-03, cured material per min cycle as in FLTM BV 150-05, for the individual region, for interior application only) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification
24、. Contact for questions concerning Engineering Material Specifications. 4.1 STORAGE STABILITY, 4 months min (From date of receipt at Ford Motor Company) Min 4 months when stored in sealed, unopened drums out of direct sunlight at ambient temperatures of 5 - 28 C. B: When stored in sealed unopened containers out of direct sunlight at ambient temperatures between 5 C and 28 C. B3: When stored in sealed unopened containers out of direct sunlight at ambient temperature of 40 C. 5. SUMMARY OF REVISIONS 2011 07 14 Added Odor Requirement. Editorial changes for clarification.
