1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2009 03 05 N-STATUS Replaced by WSS-M2P180-C A. Wedepohl, FNA 1989 08 31 Released NB00I10035569000 WP 3948-a Page 1 of 7 PAINT PERFORMANCE, AUTOMOTIVE SHEET METAL - HIGH VISIBILITY ESB-M2P130-A NOT TO BE USE
2、D FOR NEW DESIGN 1. SCOPE: This specification was released originally to define the paintability requirements for sheet metal used on exposed automotive body parts. 2. APPLICATION: This specification defines the paintability requirements for the exposed side of the following types of sheet metal: .
3、Uncoated cold rolled and HSLA steel . One and two sided zinc and zinc alloy coated steel . Aluminum sheet 3. REQUIREMENTS: 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for
4、 material/source approval. Appropriate statistical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 SURFACE APPEARANCE 3.2.1 The uncoated and coated surfaces shall be free from rust, staining, or discoloration of any kind. 3.3 SUR
5、FACE CLEANLINESS 3.3.1 The uncoated and coated surfaces shall not have any drawing oils, lubricants, or rust preventative materials applied which are not approved by the B&A - Quality Control Office. 3.3.2 Carbonaceous Material 7 mg/m2 FLTM BZ 2-3, Method “A“ (required for uncoated crs surfaces only
6、) The sampling frequency for the above requirement shall be determined by the B&A Quality Control Office. Test samples for all evaluations shall be taken as indicated in Illustration A. ENGINEERING MATERIAL SPECIFICATION ESB-M2P130-A WP 3948-b Page 2 of 7 THE GRAPHIC WHICH SHOULD APPEAR AT THIS POSI
7、TION OF THE SPECIFICATION CAN BE OBTAINED BY REFERENCING THIS SPECIFICATION NUMBER FROM: MATERIALS ENGINEERING ENGINEERING AND MANUFACTURING STAFF FORD MOTOR COMPANY SUITE 200 PARKLANE TOWERS EAST DEARBORN MICHIGAN 48126 PHONE: (313) 845-8295 3.4 SURFACE ROUGHNESS (FLTM BA 3-1) Using a Taylor-Hobson
8、 Surtronic 3P or equivalent) Each of the six pairs of average (Ra) surface roughness and peak count (PC) measurements of the metal surface prior to painting, shall lie in the region labeled “SATISFACTORY“ in Fig. 1. This region is bounded by a line expressed by the following relation: PC = Ra x 197.
9、4 - 178.7 Where PC = Peak count (peaks per cm) measured at threshold of 1.3 micrometre Ra = Roughness average (micrometre) The sampling frequency for the above requirement shall be determined by the B&A Quality Control Office. The supplier shall record the Theoretical Distinctness of Image (TDOI) as
10、 expressed by the following relation: TDOI = 98.4 - (14.6 x Ra) + (0.075 x PC) Note: It is recognized that forming operations may alter surface texture and thus, may produce surfaces which do not conform to this requirement even though the as-received surface conformed. 3.5 PAINTABILITY This paragra
11、ph defines the requirements for the paintability tests which are required for initial approval or requalification purposes. All requirements contained in para 3.5 shall be performed on five (5) separate coils of steel with head and tail samples from each coil. This is as defined by the Q-101 Manual,
12、 Process Potential Studies. Any deviation from this requirement must be approved by Body and Chassis Engineering. The requirements in this paragraph can be performed by the sources listed in para 5.3 as a service to those without the required preparation or testing facilities. ENGINEERING MATERIAL S
13、PECIFICATION ESB-M2P130-A WP 3948-b Page 3 of 7 3.5.1 Panel Preparation (Refer to Para 5.1 for material references) 3.5.1.1 Zinc Phosphate Coating Zinc phosphate to a coating weight of 1.6 - 3.2 g/m2 using a Ford approved zinc phosphate system for automotive assembly plants. 3.5.1.2 High Build Elect
14、rocoat (HBEC) Primer/Enamel System Panels which have been phosphate coated per 3.5.1.1 shall be primed using the currently released High Build Cathodic Electrocoat Primer to a film thickness of 30 micrometre. The panels shall be cured for 10 minutes at 182 +/- 2 C metal temperature or as recommended
15、 by the supplier. Panels which have been primed per above shall be top coated with white enamel using the currently released High Solids Enamel to a film thickness of 42 +/- 4 micrometre. The panels shall be cured for 17 minutes at 129 +/- 2 C ambient or as recommended by the supplier. Suitable labo
16、ratory test panels shall be processed concurrently as controls (Reference Para 5.2). Panels shall be aged 72 h at 23 +/- 2 C or 16 h at 45 +/- 2 C before testing. 3.5.2 Resistance Requirements Test panels prepared as outlined by para 3.5.1 shall provide acceptable performance as defined by the follo
17、wing requirements: 3.5.2.1 Paint Adhesion, initial No flaking or (FLTM BI 6-1) chipping. (Grade 1) 3.5.2.2 Paint Adhesion, Wet No flaking or (ASTM D 2247-68) chipping. (Grade 2) Panels shall be prepared in accordance with para 3.5.1 except use black enamel. There shall be no greater loss of adhesion
18、 than grade 2, when tested as in para 3.5.2.1 within one half hour after 120 h exposure in 38 +/- 2 C at 100 % relative humidity. ENGINEERING MATERIAL SPECIFICATION ESB-M2P130-A WP 3948-b Page 4 of 7 3.5.2.3 Salt Spray Resistance 500 h (uncoated, non-zinc, surfaces only) (FLTM BI 3-1) There shall be
19、 no rust, blister creepage or loss of paint adhesion in areas more than 3mm from the scribe line after 500 h salt spray exposure. Scribe in “X“ to bare metal within one half hour after salt spray exposure in areas other than the scribe area, there shall be no loss of adhesion when tape tested per FL
20、TM BI 6-1. 3.5.2.4 Scab Corrosion Resistance (FLTM BI 23-1) There shall be no blistering, rusting or loss of adhesion more than 3 mm from the scribe line after 30 test cycles. 3.5.3 Finished Appearance (not required for crs surfaces) Para 3.5.3.1 and 3.5.3.2 are required for the exposed side of the
21、sheet metal as it would be used in production. The finished appearance shall be equal to or better than that of crs surfaces. When evaluating zinc, zinc alloy, or aluminum surfaces a crs control material shall be used. 3.5.3.1 Surface Roughness After Primer Ra = 0.4 (FLTM BA 3-1) micrometre max Pane
22、ls which have been prepared in accordance with para 3.5.1 with electrocoat primer only shall have a surface roughness as described above when using a Taylor-Hobson Surtronic 3P profilometer or equivalent. 3.5.3.2 Distinctness of Image (DOI), min 85 (FLTM BI 10-3) (Hunter Dori-Gon D47-6 DOI Meter or
23、equivalent) Panels shall be prepared in accordance with para 3.5.1 except use black enamel. 3.6 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. ENGINEERING MATERIAL SPECIFICATI
24、ON ESB-M2P130-A WP 3948-b Page 5 of 7 Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements,
25、the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restri
26、ctions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF M
27、ATERIALS: Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon requ
28、est, the Supplier shall submit to the affected Materials Engineering activity its own laboratory report to the specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineer
29、ing Material Approved Source List. 5. GENERAL INFORMATION: 5.1 SPECIFICATION REFERENCES 5.1.1 Zinc phosphate ESB-M3P1 & Process Standard PL 53-33 5.1.2 High Build Electrocoat (HBEC) Primers ESB-M64J23 5.1.3 High Solids Spray Primers ESB-M6J141 5.1.4 Enamel Top Coats ESB-M33J100 5.2 FORD LABORATORY T
30、EST METHOD (FLTM) AND ASTM REFERENCES FLTM BI 3-1, Salt Spray Test FLTM BI 6-1, Paint Adhesion FLTM BI 10-3, Distinctness of Image (DOI) FLTM BI 23-1, Simulated Arizona Proving Ground (APG) Test FLTM BZ 2-3, Carbonaceous Material Test ASTM D 2247-68, Coated Metal Specimens at 100 % Relative Humidity
31、 ENGINEERING MATERIAL SPECIFICATION ESB-M2P130-A WP 3948-b Page 6 of 7 Ford Laboratory Test Methods can be obtained from: Ford Motor Company Room A9, World Headquarters American Road Dearborn, MI 48126 Phone: (313) 323-0459 5.3 LABORATORY TEST PANELS Panels may be obtained from: Parker Co. 322 Main
32、St. Morenci, MI 49256 (313) 583-9300 or Advanced Coatings Technology Co. P. O. Box 310, 273 Industrial Dr. Hillsdale, MI 49242 (517) 439-1492 5.4 PANEL PREPARATION Panels can be prepared and/or tested at: Central Laboratory Services 15000 Century Drive Dearborn, MI 48121 (313) 337-8278 or Advanced C
33、oatings Technology Co. P. O. Box 310, 273 Industrial Drive Hillsdale, MI 49242 (517) 439-1492 ENGINEERING MATERIAL SPECIFICATION ESB-M2P130-A WP 3948-b Page 7 of 7 SURFACE ROUGHNESS REQUIREMENT FIG. 1 THE GRAPHIC WHICH SHOULD APPEAR AT THIS POSITION OF THE SPECIFICATION CAN BE OBTAINED BY REFERENCING THIS SPECIFICATION NUMBER FROM: MATERIALS ENGINEERING ENGINEERING AND MANUFACTURING STAFF FORD MOTOR COMPANY SUITE 200 PARKLANE TOWERS EAST DEARBORN MICHIGAN 48126 PHONE: (313) 845-8295
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