1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions Ver. 3 2008 08 28 N-STATUS Replaced by WSS-M2P177-B1 or WSS-M2P178-A G. Weber, FNA 1978 11 27 Metricated, Renumbered and Retyped CAH1-RD572066- 1963 09 20 Released AS1 #1095 WP 3948-a Page 1 of 3 PAINT PERFO
2、RMANCE, FUNCTIONAL EXTERIOR PARTS - MODERATE DUTY ESB-M2P29-A PAINT PERFORMANCE, FUNCTIONAL EXTERIOR PARTS - LIGHT DUTY ESB-M2P30-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE: These specifications define the quality of a painted finish required for partially visible or non-visible exterior surfaces of a
3、utomotive parts. Two levels of quality are defined as follows: ESB-M2P29: For parts which are subject to less severe weathering, corrosion or functional requirements. ESB-M2P30: For parts which are primarily hidden but which require moderate weather corrosion resistance. 2. APPLICATION: This specifi
4、cation was released originally for a finish specified where adequate weather corrosion resistance is necessary. Two quality levels provide flexibility of application and are specified depending on use, position and exposure resistance required. 3. REQUIREMENTS: 3.1 SYSTEM COMPONENTS . Phosphate coat
5、 ESB-M3P1 or ESB-M3P2. . One coat baking enamel or primer system. Variation in durability is obtained by quality of the primer or enamel used and variation in film thickness. 3.2 FILM PROPERTIES 3.2.1 Initial Hardness Shall be sufficiently cured at time of packing to withstand normal handling and sh
6、ipping without marring. 3.2.2 Final Hardness (After aging 72 h or more above 21 C) Sward Rocker 28 to 40 at 25 C Pencil 3B to H at 25 C Tukon K10 4.0 at 25 C minimum 3.2.3 Adhesion No flaking or chipping (FLTM BI 6-1) ENGINEERING MATERIAL SPECIFICATION ESB-M2P29-A ESB-M2P30-A WP 3948-b Page 2 of 3 3
7、2.4 Film Thickness, min ESB-M2P29 . 0.0004 in (10 m). Primer or enamel may be applied by either spray, dip or flow coat methods. Minimum film thickness does not apply to areas less than 1/2 in (13 mm) from upper edges, holes, embossments, lap joints or seam extension, when parts are dipped or flow
8、coated. ESB-M2P30 . 0.0003 in (8 m), excluding areas within 1/2 in (13 mm) of upper edges, holes, embossments, lap joints or seam extensions. Primer or enamel is generally applied by dipping or flow coat, but may be electrostatic spray painted. 3.3 SALT SPRAY (FLTM BI 3-1) Finished parts or polished
9、 steel control panels shall withstand exposure to 5 % salt spray with no failure as follows: Polished Panels (Refer 3.3.2) Finished Parts (Refer 3.3.3) Hours Minimum Hours Minimum ESB-M2P29 120 48 ESB-M2P30 96 24 3.3.1 Failure is defined as (1) blistering in any area or (2) corrosion creepage or los
10、s of adhesion more than 1/8 in (3.2 mm) from scratches, scar marks, or sharp edges. Blistering, corrosion creepage or loss of adhesion in areas 1/4 in (6.2 mm) from upper edges, holes, embossments, lap joints or seam extensions of dipped or flow coated parts or panels shall not be considered failure
11、 3.3.2 Production systems painting parts under this specification shall be tested periodically by running control panels through the complete system including metal cleaning and phosphate coat. Film thickness shall be representative of parts. Control panels shall be flat, polished steel panels of a
12、ny convenient size, scribed as specified in FLTM BI 3-1 before exposure. 3.3.3 Parts tested need not be scribed. They shall be representative of production and shall be exposed in a manner similar to panels. Because of variation in steel surface conditions which cannot be controlled in the cleaning
13、or painting process, minimum salt spray requirements for parts are lower than for control panels. 3.4 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior approval as desc
14、ribed in Supplier Procedure I-A. ENGINEERING MATERIAL SPECIFICATION ESB-M2P29-A ESB-M2P30-A WP 3948-b Page 3 of 3 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/exis
15、ting ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List. 5. GENERAL INFORMATION: The material data included herein is for information only and is not a requirement for the supplier. 5.1 MANUFACTURING ENGIN
16、EERING REFERENCES Applicable Process Standards are as follows: All units, black C-289 All units, color as specified C-290 Head lamp housings C-864 5.2 MATERIAL REFERENCES Full Gloss Semi Gloss Lusterless ESA-M6J66 ESB-M6J72 ESB-M2J104 ESB-M2J53 ESB-M61J1 ESB-M2J200 Quality ESB-M2J100 Quality ESB-M2J200 Quality ESB-M2J54 ESB-M2J56
