1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 11 17 N-STATUS Replaced by WSS-M2P191-A1 C. McComb 2003 06 09 Revised Para 3.0 inserted; 3.9 and 4 deleted 1967 03 03 Released AW1 #852 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 ENAMEL, CHRO
2、MIUM PLATED SUBSTRATES, AIR DRY, INTERIOR ESB-M1J70-A OR EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are air dry enamels specifically formulated to provide good adhesion to chromium plated plastic or metallic substrates. 2. APPLICATION This specificati
3、on was released originally for materials used where a single coat decorative finish is required over chromium plated plastics. However, they may be used over chromium plated steel or zinc die castings when an air dry finish is necessary. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATER
4、IALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 COMPOSITION 3.1.1 Vehicle The vehicle shall be essentially an alkyd, modified to obtain maximum adhesion to chromium plated substrates with suitable hydrocarbo
5、n solvents. 3.1.2 Pigment The pigment shall be balanced and blended so that the finished enamel matches the Ford Motor Company master panel in color. 3.1.3 Toxicity The enamels shall contain no benzene, chlorinated or other toxic compounds, or hydrolyzable chlorine derivatives, nor have an obnoxious
6、 or objectionable odor. 3.2 PHYSICAL PROPERTIES 3.2.1 Non-Volatile, min 38.0% (FLTM BI 102-01) ENGINEERING MATERIAL SPECIFICATIONESB-M1J70-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.2.2 Hiding Power, wet (FLTM BI 101-01, at a viscosity of 17 - 18 s)
7、 All metallic colors, 0.007 in (0.18 mm) wedge, max 14 Black, 0.002 in (0.05 mm) wedge, max 14 Reds and maroons, 0.007 in (0.18 mm) wedge, max 14 Medium and dark colors, 0.007 in (0.18 mm) wedge, max 10 Light colors and white, 0.007 in (0.18 mm) wedge, max 8 3.2.3 Viscosity 14 - 18 s (FLTM BI 111-01
8、) 3.3 PREPARATION OF TEST PANELS 3.3.1 Material Chromium plated plastic, steel, or zinc die cast panels of any convenient size. 3.3.2 Clean . Spray-wash or immerse and agitate the plated panels in the following solution: Material M-1048 Tri Sodium Phosphate or equivalent. Concentration 3 - 4 oz/gal
9、(22.5 - 29.9 g/l) Temperature 60 - 71 C Time, min 2 min . Rinse in cold running water, agitated. . Dip in chromic acid solution. Material M-1129 Chromic Acid Concentration 2 - 3 oz/100 gal (0.15 - 0.29 g/l) of water Temperature (72 - 82 C) Time 2 min . Rinse in hot (49 - 60 C) distilled or deionized
10、 water. . Rinse in cold distilled or deionized water. . Drain and blow off drops with compressed air. . Dry in mechanical convection oven. 3.3.3 Enamel Apply a full covering coat of enamel within 60 min after cleaning panels. ENGINEERING MATERIAL SPECIFICATIONESB-M1J70-A Printed copies are uncontrol
11、led Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.3.4 Aging When the work area is properly ventilated and a minimum temperature of (21 C) is maintained, the enamel shall air dry to a tack free condition in 15 min. The painted panels shall be conditioned at any one of the following sche
12、dules prior to testing: . 30 min at 71 +/- 3 C . 16 h at 43 +/- 3 C . 72 h at 22 C min 3.4 APPEARANCE 3.4.1 Color (FLTM BI 109-01) Shall match Ford Motor Company master panel. 3.4.2 Gloss (FLTM BI 110-01, 60 glossmeter) 3.4.2.1 Appearance Items The gloss shall be specified by means of a letter suffi
13、x to the color number assigned by Styling, as follows: A 92 min F 35 +/- 3 B 80 +/- 4 G 20 +/- 3 C 70 +/- 4 H 10 +/- 3 D 62 +/- 3 J 6 max E 50 +/- 3 3.4.3 General The enamel shall cure to a presentable, serviceable film showing no craters, pinholes, seediness or abnormal roughness. It shall have a r
14、easonable tolerance to ordinary cleaning and polishing procedures. 3.5 FILM PROPERTIES 3.5.1 Hardness Shall be sufficiently hard at time of packing to withstand normal handling and shipping without marring. 3.5.2 Adhesion No flaking or chipping (FLTM BI 106-01) 3.5.3 Film Thickness 0.0010 - 0.0015 i
15、n (26-38 m) ENGINEERING MATERIAL SPECIFICATIONESB-M1J70-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.6 RESISTANCE PROPERTIES 3.6.1 Water Resistance, min 96 h Test Method: Immerse the parts for 96 h in distilled or deionized water maintained at 38 +/-
16、1 C as described in FLTM BI 104-01. Remove parts from water and immediately scribe an X through the enamel to the substrate in representative painted areas most prone to blistering. Dry the scribed area with a paper towel, cloth or air pressure and immediately apply, with firm thumb pressure, a mini
17、mum of 2 sq in (13 cm2) of ESF-M3G48 tape. (On parts having less than 2 sq in (13 cm2) of paint area, a minimum of 50% of the painted area must be taped). Remove the tape by pulling one end of a 90 angle at a moderate speed. The following conditions shall be basis for rejection: . Removal of paint b
18、eyond 1/16 in (1.6 mm) from any scribe line. . Any evidence of blistering after tape removal. 3.6.2 Weathering Resistance 3.6.2.1 Accelerated Weathering (FLTM BO 101-01, 400 h Weatherometer exposure) The enamel shall exhibit no checking and no more dulling or color change than the approved master sa
19、mple on file in the Body Materials Laboratory. The enamel shall not blister nor show loss of adhesion. 3.6.2.2 Florida Exposure (Miami Area) The enamel shall exhibit no checking and no more dulling or color change than the approved master sample on file in the Body Materials Laboratory. The enamel s
20、hall not blister nor show loss of adhesion when subjected to the following test: 12 months-minimum exposure at 45 facing south in the Miami, Florida, area. Note: In the event of differences in the test results of accelerated weathering (3.6.2.1) and Florida Exposure (3.6.2.2) the results of the Flor
21、ida Exposure (3.6.2.2) shall govern. 3.6.3 Water Resistance After Weathering After panels have been subjected to 400 h Weatherometer exposure as specified in paragraph 3.6.2 they shall be tested for 24 h water resistance as described in paragraph 3.6.1. Peeling of the paint film in excess of 1/8 in
22、(3 mm) from the scribe mark shall be cause for rejection. This same water immersion test will apply to the Florida panels of the 12 months exposure. ENGINEERING MATERIAL SPECIFICATIONESB-M1J70-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5 3.6.4 Resistanc
23、e to Water and Soap Spotting (FLTM BI 113-01, except use of colorimeter is omitted) The enamel shall exhibit no more dulling or color change than the approved master sample on file in the Body Materials Laboratory. 3.6.5 Resistance to Acid Spotting (FLTM BI 113-02, except use of colorimeter is omitt
24、ed) The enamel shall exhibit no more dulling or color change than the approved master sample on file in the Body Materials Laboratory. 3.6.6 Gasoline Resistance The enamel shall exhibit no more softening, dulling, color transfer or color change than the approved master sample on file in the Body Mat
25、erials Laboratory. The enamel shall not blister or show any evidence of loss of adhesion. Test Method: Place the painted panel in a 600 ml beaker half full of M14J148 Petroleum Naphtha - Aliphatic type for 1 h at 22 C minimum. Wipe the panel with a soft cloth and examine the cloth for evidence of co
26、lor transfer and the paint film for evidence of degradation. 3.7 SHELF STABILITY (FLTM BI 102-03) The material shall not jell or liver upon standing. 3.8 THERMAL SHOCK (FLTM BI 107-05) The enamel shall exhibit no blistering or loss of adhesion when subjected to the following cycle test. . 4 h water immersion. . 4 h minimum exposure at -29 C. . Direct steam blast on scribed X at 45 angle 2 - 3 in (50 - 75 mm) from panel for 15 s minimum.
