1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 08 29 N-STATUS No replacement named C. McComb 2003 08 11 Revised Para 3.0 inserted; Para 3.6 & 4 deleted 1972 07 24 Released AS1-891 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 5 PAINT PERFORMAN
2、CE, DECORATIVE FINISH - BRIGHT METAL PARTS - ESB-M2P69-B EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the paint performance requirements for partially painted exterior parts made from chromium plated die castings, chromium plated steel or plastic, chromium flashed stain
3、less steel, anodized aluminum and stainless steel, including hub caps, wheel covers, grilles, back panels, moldings and large appliqus. 2. APPLICATION This specification was released originally for partially painted exterior bright metal parts employing air dry or baking enamel as specified and for
4、fully painted aluminum (not anodized) surfaces where a single coat of baked enamel is satisfactory. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3
5、.1 METAL PREPARATION 3.1.1 Partially Painted Anodized Aluminum, Chromium Plate, or Stainless Steel Surfaces Adequate preparation per process C-250E, or equivalent performing process when specifically so approved by the using Ford manufacturing division. 3.1.2 Fully Painted Aluminum Bare aluminum (no
6、t anodized) shall be oxide coated per ESB-M6P2. 3.2 PRIMER FOR CHROMIUM SURFACES The use of ESA-M6J73 primer is optional if necessary to obtain the required adhesion. The primer film thickness requirement is 0.0005 - 0.00075 in (13 - 19.1 m). 3.3 ENAMEL Shall consist of a single coat of air dry or b
7、aked enamel. Prior to use of an enamel, the manufacturer of the enamel shall obtain approval for the specific color and gloss in question from the BEPE Materials Engineering Department. ENGINEERING MATERIAL SPECIFICATIONESB-M2P69-B Printed copies are uncontrolled Copyright 2007, Ford Global Technolo
8、gies, LLC Page 2 of 5 3.4 FILM PROPERTIES 3.4.1 Color and Gloss (FLTM BI 109-01 and BI 110-01) Shall match master sample approved by Styling or initial samples submitted on Form 292-A and approved by Quality Control for color match and gloss. 3.4.2 Initial Hardness Shall be sufficiently cured at tim
9、e of packing to withstand normal handling and shipping without marring. 3.4.3 Enamel Film Thickness, min 0.0010 in (25 m) (FLTM BI 117-01) Unless otherwise specified on the engineering drawing, a lower minimum film thickness may be specified on surfaces which are nonvisible, noncritical or are not s
10、ubject to weathering. (When the production part does not lend itself to film thickness measurements, test panels processed concurrently with production parts may be used). 3.4.4 Curing - Painted Chromium Plated Plastic Shall be conditioned according to one of the following cure schedules before test
11、ing durability properties under para 3.5. . 30 min at 71 +/- 3 C . 16 h at 43 +/- 3 C . 72 h at 21 C minimum 3.5 DURABILITY PROPERTIES 3.5.1 Water Resistance, min 2 h Test Method: Immerse the parts for 2 h in distilled or deionized water at 5 ppm water soluble impurities (NaC1 equivalent) maximum ma
12、intained at 38 +/- 1 C as described in FLTM BI 104-01. Remove part from water and wipe dry with a clean unused paper towel or cloth. Parts that are difficult to wipe by hand, particularly in recessed areas, may be blown dry with oil and moisture free compressed air. Immediately apply with firm thumb
13、 pressure, ESF-M3G48-A tape to all painted areas of the part. In the event that part complexity requires significant time for tape application, areas of greatest visual contact should be tested first. In no case should the time between dry-off and testing exceed 10 min. Remove the tape by pulling on
14、e end at a 90 angle at a moderate speed. Evaluate results in the following manner: (Surfaces are identified on the engineering drawing.) ENGINEERING MATERIAL SPECIFICATIONESB-M2P69-B Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 5 a. Class “A“ Surfaces on Ra
15、diator Grilles and All Surfaces on All Other Parts Any removal of paint exceeding 1/8 in (3.2 mm) for the longest dimension shall constitute a failure and rejection of that lot. Class “B“ Surfaces on Radiator Grilles Any removal of paint exceeding 1/4 in (6.4 mm) for the longest dimension shall cons
16、titute a failure and rejection of that lot. Class “C“ Surfaces on Radiator Grilles Any removal of paint exceeding 1/2 in (12.7 mm) for the longest dimension shall constitute a failure and rejection of that lot. b. A grid consisting of 100 - 1/4 in (6.4 mm) squares is to be used according to the foll
17、owing procedure: . The grid is to be placed over the paint separations so that the grid and/or the individual squares encompass the worst combination of separations. . If a paint separation is on the dividing line between two squares, it shall be counted in the square having the most separations. .
18、No paint separation shall be counted twice. Failures are defined as follows: Class “A“ and “B“ Surfaces on Radiator Grilles and All Surfaces on All Other Parts . A square is rated a failure if more than 5 spots (of any size) of paint separation occur within any given square. . If more than 2% of the
19、 squares in a grid are classified a failure, this shall constitute a lot failure and rejection of that lot. Class “C“ Surfaces on Radiator Grilles . An area of 1 in2(6.5 cm2) is rated failure if more than 3 spots of paint separation exceeding 1/4 in (6.4 mm) in the longest dimension occur. . If more
20、 than 2% of the 1 in2(6.5 cm2) areas are classified a failure, this shall constitute a lot failure and rejection of that lot. 3.5.2 Gasoline Resistance Immerse the part in M-14J148 Petroleum Naphtha for 1 h at 21 C minimum. No blistering of the paint is permitted, and only slight softening and dulli
21、ng is permitted. There shall be no color transfer to a soft cloth after wiping the exposed painted surface. ENGINEERING MATERIAL SPECIFICATIONESB-M2P69-B Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 5 3.5.3 Weathering Resistance, min 400 h (FLTM BO 101-01)
22、Shall show a minimum degree of fading, chalking, dulling, or color change. No greater loss of gloss is permitted than equivalent approved production colors. This specimen may be a current production part, a similar or previous production part, or a test panel. In all cases, the specimen under test s
23、hall be equivalent to current production materials and processing. No increase of brittleness or loss of adhesion is permitted and specimens shall be completely free from evidence of cracking, checking, blistering, or peeling. 3.5.4 Water Resistance After Weathering After parts or test panels have b
24、een subjected to the exposure listed in para 3.5.3, they shall be tested for water resistance using test method in para 3.5.1. The conditions for rejection described in para 3.5.1 shall apply to this test. 3.5.5 Thermal Shock Test No loss of adhesion (FLTM BI 107-05)3.5.6 Salt Spray Resistance, min
25、96 h (ASTM B 117) This test is to be conducted only on finished parts of dissimilar metals, assembled by an outside supplier. Test Method: Remove from the salt fog atmosphere and immediately scribe an “X“ through the enamel to the metal. Dry the scribed area with a paper towel, cloth or by air blow
26、off and immediately apply ESF-M3G48 tape with firm thumb pressure. Remove the tape by pulling one end at a 90 angle at moderate speed. Removal of the paint beyond 1/16 in (1.6 mm) from a scribe line or blistering visible to the naked eye shall be cause for rejection. 3.5.7 Sampling Samples represent
27、ing a lot shall be taken from each operator every 2 h. One sample is to be tested for water resistance, one sample tested for salt spray resistance when required, and one sample tested for gasoline resistance as required by the engineering specification. All samples shall be checked for paint film t
28、hickness. Samples shall be tested for weathering resistance at a frequency specified by Quality Assurance. If the sample subjected to water resistance fails to meet the engineering requirements, the producer may elect to re-sample the lot. Five additional samples shall be selected at random for the
29、same lot and subjected to water resistance testing. If any of the re-samples fail to meet the engineering requirements, or if the producer has not elected to re-sample, the entire lot must be rejected and either reprocessed or scrapped. ENGINEERING MATERIAL SPECIFICATIONESB-M2P69-B Printed copies ar
30、e uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 5 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MANUFACTURING ENGINEERING REFERENCES All car lines - Process Standard C-250-
31、E. For preparing plain unanodized aluminum surfaces for paint refer to Process Standard PL-52-03 or PL-53-33. 5.2 BODY MATERIAL REFERENCES 5.2.1 Application Over Chromium Plated Metal Surfaces ESB-M2J113 - Quality Baking Enamels 5.2.2 Application Over Chromium Plated Plastic Surfaces ESB-M1J70 - Qua
32、lity Air Dry Enamel 5.2.3 Application Over Stainless Steel Surfaces ESB-M2J111 - Quality Baking Enamels 5.2.4 Application Over Anodized Aluminum Surfaces ESB-M2J112 - Quality Baking Enamels 5.2.5 Application Over Chromium Oxide Coated Aluminum Surfaces ESB-M2J67 - Quality Baking Enamels 5.3 RELATED ENGINEERING SPECIFICATION ESB-M6P2 Chromium Oxide Coating for Aluminum and ESB-M4P6 Anodic Coating, Decorative for Exterior Aluminum Parts.
