1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 02 16 N Status No replacement named N. Benipal, NA 2006 03 09 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.7, 4 1989 08 16 Released NB00I10031967 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of
2、 4 COATING, FLUOROCARBON, COIL COATED ALUMINUM ESB-M99J357-A STAINLESS STEEL OR LOW CARBON STEEL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a fluorocarbon coating with urethane primer applied to aluminum, stainless steel, or low carbon steel coils prior to s
3、tamping. 2. APPLICATION This specification was released originally for material used for exterior body moldings. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part p
4、roducers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 APPEARANCE (FLTM BI 109-01) The color, pattern and finish shall match the approved Design Center master sample, or shall be as specified on the engineering drawing. In addition, there shall be
5、no evidence of fluorocarbon adhesion loss or drawback, particularly in the critical radius areas after forming. 3.4 THICKNESS AND DIMENSIONS The thickness of the fluorocarbon coating and primer shall be 0.05 mm +/- 0.002. The requirements of the metal substrate shall be specified on the engineering
6、drawings along with other part dimensions. 3.5 FLAT COATED PANELS - PRIOR TO FORMING 3.5.1 Formability (FLTM BI 009-05) The fluorocarbon coating shall withstand a bend over a mandrel equivalent to three thicknesses of the base metal. The decorative fluorocarbon surface shall exhibit no hazing, blush
7、ing, crazing, cracking, clouding, or loss of adhesion and shall be equivalent to the initially approved sample. 3.5.2 Adhesion, Initial, max Grade 1 (FLTM BI 106-01) ENGINEERING MATERIAL SPECIFICATION ESB-M99J357-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 4 3.5.3 Resistance to Elevate
8、d Temperature The coating shall not exhibit loss of adhesion, change in gloss, color tone, or hue in excess of the originally tested sample. Test method: Place a 100 x 100 mm flat test specimen of the fluorocarbon coated metal in a convection oven maintained at 121 +/- 3 C for a period of 30 min (fl
9、uorocarbon surface up). Allow to cool to room temperature and visually examine and compare with the original exposed approved master sample. 3.5.4 Chip Resistance, max 4B (SAE J400, except 23 +/- 2 C and 50 +/- 5% relative humidity) 3.5.5 Scuff Resistance (FLTM BN 108-04, “A“ Head. 1000 Cycles, 0.91
10、 kg load) The fluorocarbon surface shall show no evidence of wear through to the metal substrate. 3.5.6 Abrasion Resistance (FLTM BN 108-02, CS No. 10 Wheels, 1000 Cycles, 1000 g Load) The fluorocarbon surface shall show no evidence of wear-through to the metal substrate. 3.5.7 Impact, Gardner Norma
11、l (23 +/- 2 C), min 2.8 J Low Temperature (-29 C), min 0.6 J No evidence of cracking, loss of adhesion or other mode of failure when impacted from either side. Gardner model 1G-1120 (or equivalent) tested with a 13 mm diameter hemispherical impact head. The low temperature test shall be conducted af
12、ter exposure for 4 h minimum at -29 C and impacted within 20 s after removal from the low temperature chamber. ENGINEERING MATERIAL SPECIFICATION ESB-M99J357-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 4 3.5.8 Weathering Resistance 3.5.8.1 Florida Exposure 24 mos on (Miami area, facing
13、 south standard rack at 5 from horizontal) In order to monitor interim durability, a panel shall be exposed for 12 mos in Florida concurrently with the 24 mos panel. Returned, completed Florida exposure panels shall be washed in their entirety with a soft foam pad using a 25% Ford M-1034 Soap soluti
14、on. Next, the panels are rinsed with tap water, blown dry with clean compressed air, and then placed in a deionized water bath for 16 h per FLTM BI 104-01. After panels are removed from water bath and thoroughly blown dry, an “X“, to be located at the center of panel and 50 mm from the bottom, is sc
15、ribed. This “X“ shall be 30 mm in height and 20 mm wide. The scribed “X“ is then tape-pulled with 3M brand 898-2 tape. There shall be no evidence of peeling or blistering. NOTE: If the completed Florida exposure panels require more thorough cleaning to facilitate proper evaluation, the lower 1/3 of
16、the panels may be polished with Ford Custom Silicone Gloss cleaner, part number B7AZ-19530-AA, using a soft cloth. This procedure is performed only after the panels have been previously washed and subjected to water immersion and the “X“-scribe tape pull. The panels shall show no more evidence of ch
17、alking, dulling, fading or other color change than the originally tested sample. Also, the panels shall be free from cracking and microchecking when examined with the aid of a light source such as a Berkey Colortran Multi-10A Lamp, Model 100-301 using a Sylvania 120V FBY bulb. Any evidence of such c
18、racking or microchecking is considered to be a failure. Note: The performance rating assigned to a completed 24 Mos. Florida exposure panel takes precedence over a panel of the same material exposed for 1000 h per para 3.5.8.2. 3.5.8.2 Accelerated Exposure 1000 h (SAE J2020, Fluorescent UV and Conde
19、nsation Apparatus) Cycle is (4) h condensing humidity at 50 C followed by eight (8) h fluorescent UV at 70 C. After panels are removed from apparatus and allowed to dry, an “X“, located at the center of panel and 50 mm from the bottom, is scribed. The “X“ shall be 30 mm in height and 20 mm wide. The
20、 scribe is then tape-pulled with 3 M 898-2 tape. There shall be no evidence of loss of adhesion, blistering or cracking. Dulling, chalking, or fading shall not exceed established limits. ENGINEERING MATERIAL SPECIFICATION ESB-M99J357-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 4 3.6 FO
21、RMED PART The forming operation shall not reduce the performance of the coating. Paras 3.5.2 - 3.5.8.2 apply to the formed part as well as the flat panel. 3.6.1 Dimensional Stability The formed part shall show no evidence of flattening or loss of embossing, loss of grain, blistering, shrinkage or ex
22、pansion to the extent of causing unsightly wrinkles. The assembly shall exhibit no visible loss of adhesion, creepage or cracking that will result in an objectionable appearance and/or exposure of the metal substrate. Test Method: Place the assembly in a mechanical convection oven maintained at 83 +
23、/- 3 C for 7 days. Allow the specimens to cool to room temperature and examine. 3.6.2 Thermal Shock (FLTM BI 107-05) Direct the steam blast at the edges where the molding is bonded to the substrate and at the cut ends. The assembly shall show no evidence of degradation or loss of adhesion. 3.6.3 Wat
24、er Resistance, min 240 h (FLTM BI 104-01) The formed part shall exhibit no evidence of color change, chalking, cracking, or loss of adhesion. 3.6.4 Salt Spray Resistance, min 240 h (FLTM BI 103-01) The formed part shall exhibit no evidence of color change, chalking, cracking or loss of adhesion. In
25、addition, the fluorocarbon coated metal shall not crack, corrode excessively or exhibit any other characteristics which would produce an objectionable appearance when the part is in the installed position. Areas of severe forming shall be tape pulled with 3M brand 898-2 tape. No evidence of adhesion
26、 loss shall be exhibited in the taped areas. 3.6.5 Resistance to Gasohol No color change, dulling surface distortion or permanent softening is permitted. Test Method: Immerse panels in *Gasohol for 1 h, remove and allow to recover at room temp for 1 h. Examine panel for color change, dulling, surface distortion or permanent softening. *Gasohol Composition (by volume) ASTM Reference Fuel C 80% Methanol 20%
