1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 02 16 N Status No replacements named N. Benipal, NA 2005 08 30 Revised Inserted 3.0; Deleted 3.1, 3.7 and 4 1983 08 02 Released CAN1-AF504174-1 (Reissue to correct Change No.) Controlled document at www.MATS Copyright 2012, Ford G
2、lobal Technologies, LLC Page 1 of 4 CHIP RESISTANT REPAIR COATING - TWO-COMPONENT ESB-M99J315-A URETHANE - PAINTABLE - LOW BAKE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a sandable two-component urethane stone chip resistant coating with good paintability c
3、haracteristics. 2. APPLICATION This specification was released originally to repair small damaged areas of ESB-M99J311. The material, covered by a flash primer, shall be cured by either the enamel or the catalyzed enamel bake cycle. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS
4、Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 NOMENCLATURE The materials components shall be described as follows: Polyol base Hardener When the two components are mixed together, the resulting solution shall b
5、e described as the “blend“. 3.3 PHYSICAL PROPERTIES 3.3.1 Nonvolatile (FLTM BI 102-01) Polyol base 59 +/- 1% Hardener 70 +/- 1% Blend 63 +/- 1% 3.3.2 Weight per volume at 23 +/- 2 C (ASTM D 1475) Polyol base 1.65 +/- .01 kg/L Hardener 1.06 +/- .01 kg/L Blend 1.33 +/- .01 kg/L ENGINEERING MATERIAL SP
6、ECIFICATION ESB-M99J315-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 4 3.3.3 Viscosity (ASTM D 562) Polyol base 110 +/- 5 KU Hardener 95 +/- 5 KU Blend 70 +/- 5 KU 3.3.4 Blending Ratio, by Volume Polyol base, parts 1.33 Hardener, parts 1.0 3.3.5 Pot Life of the Blend 1 h min The blend s
7、hall retain excellent sprayability characteristics. 3.3.6 Bake Requirements When catalyzed enamel is to be used, cover the blended stone chip coating with ESB-M6J65 flash primer prior to baking. When body enamel is to be used, cover the blended stone chip coating with ESB-M6J57 flash primer prior to
8、 baking. 3.4 FILM PROPERTIES 3.4.1 Dry Film Thickness Requirement 200 - 280 m 3.4.2 Sagging and Solvent Popping No sagging or solvent popping is allowable at 200 - 280 m dry film thickness. 3.4.3 Paintability No significant color shift, difference in orientation of metallic flakes (metallic paints)
9、or other objectionable appearance defects in the topcoat over the chip coating. 3.4.4 Leveling The chip resistant coating shall have an orange peel appearance similar to that of ESB-M99J311. 3.4.5 Dry Sanding Characteristics After baking, the chip resistant coating plus ESB-M6J57 flash primer shall
10、dry sand (using a new sheet of 280 grit stearate filled paper for each panel) smoothly without clogging the paper and with a minimum of sand scratches. The material shall be equivalent in all respects to current approved production coating applied and tested under identical conditions. 3.5 RESISTANC
11、E PROPERTIES 3.5.1 Adhesion (FLTM BI 106-01, Part B) Panels shall show no removal of the stone chip resistant coating, flash primer or the topcoat. ENGINEERING MATERIAL SPECIFICATION ESB-M99J315-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 4 3.5.2 Chip Resistance at Room Temperature Fol
12、lowed by Salt Spray (SAE J400 and FLTM BI 103-01) After tape adhesion, there shall be an SAE chip rating of 6C max, less than 3 mm creep-back from the scribe, and no face blistering. Test Method: Strike the test specimen with 1.9 L of gravel per SAE J400 JUN 80. Scribe an “X“ to the substrate on the
13、 lower 76 mm of the test specimen. Expose to salt spray for 500 h per FLTM BI 103-01. Within 30 min after the completion of salt spray testing, apply ESF-M3G48 tape, with firm thumb pressure, to the entire surface of the part. Remove the tape by pulling one end at a 90 angle with moderate speed. 3.5
14、.3 Condensing Humidity 240 h (FLTM BI 104-02, Procedure A) Panels shall show no blistering or lifting. 3.5.4 Cold Checking Resistance (FLTM BI 107-02, Procedure Section Only) The coating system shall withstand a minimum of 10 cold test cycles without cracking or noticeable dulling when cured at the
15、minimum baking temperature. 3.5.5 Accelerated Weathering Resistance Panels shall show no more than a minimum degree of fading, chalking or dulling. No increase of brittleness or loss of adhesion is permitted and panels shall be completely free from evidence of cracking, checking, blistering, or peel
16、ing when exposed to the following cycle for 500 h: 4 h at 60 C with ultraviolet light exposure. 4 h at 50 C condensing water exposure. 3.5.6 Florida Exposure Prepare panels with the following topcoat systems: Set I Catalyzed white acrylic enamel (ESB-M50J100 quality). Set II White acrylic enamel (ES
17、B-M50J100 quality). Scribe the panels with an “X“ to base metal and expose in the Miami, Florida area at 5 facing south for 12 months. There shall be no blistering, peeling, or visible rusting along the scribed marks more than 3 mm total width. ENGINEERING MATERIAL SPECIFICATION ESB-M99J315-A Copyri
18、ght 2012, Ford Global Technologies, LLC Page 4 of 4 3.5.7 Storage Stability Both of the components shall remain tightly sealed during storage. Both components shall be stored at ambient room temperature below 32 C, away from all sources of heat. Heat greatly accelerates aging. Under these storage co
19、nditions, the minimum shelf life of the materials shall be 12 months. 3.6 IN-PROCESS TESTS 3.6.1 Statistical Specification Minimum Test Acceptance Para. No. Sample Size Criteria Polyol base 3.2.1 2 All must pass 3.2.2 2 All must pass 3.2.3 2 All must pass Hardener 3.2.1 2 All Must pass 3.2.2 2 All m
20、ust pass 3.2.3 2 All must pass Blend 3.2.4 1 All must pass 3.2.5 1 All must pass 3.2.6 2 panels All must pass 3.6.2 Reaction Plan The material shall pass all the required tests before the batch is shipped to the Ford Motor Company. If a batch does not pass all requirements, chemical additives may be introduced to the batch prior to total quality control retesting. If the batch cannot be modified to meet all specified requirements, it cannot be shipped to the Ford Motor Company.
