1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2009 03 05 N-STATUS No Replacement Named A. Wedepohl, FNA 1989 08 18 Released NB00i10015072 WP 3948-a Page 1 of 5 PAINT PERFORMANCE, AUTOMOTIVE SHEET METAL - LOW VISIBILITY ESB-M2P129-B NOT TO BE USED FOR NE
2、W DESIGN 1. SCOPE: This specification was released originally to define the paintability requirements for sheet metal used on unexposed and low visibility exterior automotive body parts. 2. APPLICATION: This specification defines the paintability requirements for the both sides of the following type
3、s of sheet metal: . 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 the
4、rein is required for 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
5、of any kind. 3.3 SURFACE 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/m2FLTM BZ 2-3, Method “A“ (required for uncoate
6、d crs surfaces only) 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-M2P129-B WP 3948-b Page 2 of 5 THE GRAPHIC WHICH SHOULD
7、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 3.4 PAINTABILITY This paragraph define
8、s the requirements for the paintability tests which are required for initial approved or requalification purposes only. 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. 3.4.1 Panel Prep
9、aration (Refer to Para 5.1 for material references) 3.4.1.1 Zinc Phosphate Coating Zinc phosphate to a coating weight of 1.6-3.2 g/m2using a Ford approved zinc phosphate system for automotive assembly plants. 3.4.1.2 High Build Electrocoat (HBEC) Primer/Enamel System Panels which have been phosphate
10、 coated per 3.3.1.1 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 by the supplier. Panels which have been primed per above shall be
11、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 laboratory test panels shall be processed concurrently as controls (Ref
12、erence Para 5.2). Panels shall be aged 72 h at 23 +/- 2 C or 16 h at 45 +/- 2 C before testing. ENGINEERING MATERIAL SPECIFICATION ESB-M2P129-B WP 3948-b Page 3 of 5 3.4.2 Resistance Requirements Test panels prepared as outlined by para 3.3.1 shall provide acceptable performance as defined by the fo
13、llowing requirements: 3.4.2.1 Paint Adhesion, initial No flaking or (FLTM BI 6-1) chipping. (Grade 1) 3.4.2.2 Salt Spray Resistance 500 h (uncoated, non-zinc, surfaces only) (FLTM BI 3-1) There shall be no rust, blister creepage or loss of paint adhesion in areas more than 3 mm from the scribe line
14、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 FLTM BI 6-1. 3.5 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equi
15、valent in all characteristics to the material upon which approval was originally granted. 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 materi
16、als ability to meet the specification requirements, 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 ar
17、e to be submitted with the request. Substance restrictions 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 engine
18、ering document for the application. ENGINEERING MATERIAL SPECIFICATION ESB-M2P129-B WP 3948-b Page 4 of 5 4. APPROVAL OF MATERIALS: This specification is intended to define the performance and/or properties of finished parts or systems of combined materials. An Engineering Material Approved Source l
19、isting is not applicable for this specification. Product Engineering materials referenced in this document and/or the affected engineering drawing, which require prior Engineering approval, are shown in the Engineering Material Approved Source List under the specification cited. 5. GENERAL INFORMATI
20、ON: 5.1 SPECIFICATION REFERENCES 5.1.1 Zinc phosphate ESB-M3P1 & Process Standard PL53-33 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 TEST METHOD (FLTM) AND ASTM REFERENCES FLTM BI 3-1, Salt
21、Spray Test FLTM BI 6-1, Paint Adhesion FLTM BZ 2-3, Carbonaceous Material Test Ford Laboratory Test Methods can be obtained from: Ford Motor Company Room A9, World Headquarters American Rd. Dearborn, MI 48126 Phone: (313) 323-0459 ENGINEERING MATERIAL SPECIFICATION ESB-M2P129-B WP 3948-b Page 5 of 5
22、 5.3 LABORATORY TEST PANELS Panels may be obtained from: Parker Co. 322 Main 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 Coatings Technology Co. P. O. Box 310, 273 Industrial Dr. Hillsdale, MI 49242 (517) 439-1492
