1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver 2 2008 07 22 N-STATUS Replace by WSS-M1P122-C1/C6 C. Mracna, FNA 2005 09 21 Activated G. Stevens Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 1 of 3 PAINT QUALITY, STEEL WHEELS, 10 CYCLE CORROSION RES
2、ISTANCE WSS-M2P122-B1 PAINT QUALITY, STEEL WHEELS, 60 CYCLE CORROSION RESISTANCE WSS-M2P122-B2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE These specifications define the performance requirements of coated steel wheels. 2. APPLICATION These specifications define two levels of coating quality. WSS-M2P122-
3、B1: Describes a coating system (primer only) which provides moderate corrosion resistance of 10 Cycles Cyclic Corrosion. Wheels coated to this level of protection are typically found mounted as a spare tire in the vehicle trunk or on the tailgate. WSS-M2P122-B2: Describes a coating system which prov
4、ides exceptional corrosion protection to 60 Cycles of Cyclic Corrosion. These wheels are visible and mounted in vehicle position. They can include a color topcoat. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys St
5、andard Requirements For Production Materials (WSS-M99P1111-A). 3.2 SAMPLE SELECTION Test shall be conducted on flat test pieces cut from production wheels. Test panels are acceptable but must be painted on the same system as the production wheels. 3.3 COATING Shall be a continuous film, free of blis
6、ters, bubbles, foreign material and similar imperfections. 3.4 FILM THICKNESS (FLTM BI 117-01, Eddy Mag 2000/Oxford CM1700 or equivalent) Coating thickness must be sufficient to meet all requirements of this specification. Each coating manufacturers thickness requirements are to be specified on the
7、applicators Control Plan. Maximum coating thicknesses (initial and after any repair process), must meet the hub/pilot gap requirements as outlined in the wheel ES specification. ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-B1/B2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologi
8、es, LLC Page 2 of 3 3.5 INITIAL HARDNESS Production parts shall be sufficiently cured (per manufacturers recommendation) at time of packing to withstand normal handling without marring. 3.6 COLOR As determined (FLTM BI 109-01 Visual Assessment; by Color Harmony SAE J1545, Three-Angle CMC Team) Shall
9、 match the Master Approved Sample color panel or the initial sample as approved by the Design Center. 3.7 GLOSS (FLTM BI 110-01) As released by Corporate Design: (Use as a guide) A: 20 Glossmeter, min 92 B: 60 Glossmeter 76 84 C: 60 Glossmeter 66 74 D: 60 Glossmeter 58 66 E: 60 Glossmeter 47 53 F: 6
10、0 Glossmeter 33 38 G: 60 Glossmeter 17 23 H: 60 Glossmeter 7 13 J: 60 Glossmeter 4 6 K: 60 Glossmeter 2 4 L: 60 Glossmeter 0.5 2 3.8 ADHESION Grade 5A (ASTM D 3359, Method A; Adhesive Tape 3M No. 898) 3.9 STONE CHIP RESISTANCE, max 4B (SAE J400, 1 pt (0.5L) of gravel) 3.10 WEATHERING RESISTANCE (SAE
11、 J1960, 0.55 W/m2 Irradiance Borosilicate Inner and Outer Filters) WSS-M2P122-B1, 400 h WSS-M2P122-B2, 3000 h No evidence of crazing, checking chalking or other degradation in coating appearance after exposure to accelerated weathering are acceptable. Adhesion shall meet the requirements of para 3.8
12、 After 24 h recovery time, no color change in excess of Gray Scale rating 4. (AATCC Evaluation Procedure 1/ISO 105-A02) ENGINEERING MATERIAL SPECIFICATION WSS-M2P122-B1/B2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 3 3.11 WATER RESISTANCE, 240 h (FLTM BI
13、 104-01) No blistering, dulling or loss of adhesion (Par 3.8) after water exposure testing. 3.12 GASOLINE RESISTANCE (FLTM BI 152-02) Fuel Composition (FLTM AZ 105-02, ASTM D 471/ISO 1817) by Volume: 1) Reference Fuel F = Diesel Fuel, Grade #2, 100% 2) Reference Fuel I = CM15 3) Reference Fuel K = C
14、85 After 5 minute recovery time, no color change in excess of Gray Scale rating 4 5 (AATCC Evaluation Procedure 1/ISO 105-A02), dulling, surface distortion or permanent softening permitted. Adhesion shall meet the requirements of para 3.8. 3.13 CYCLIC CORROSION RESISTANCE, min Rust Grade 6 per ASTM
15、D 610 (FLTM BI 123-03) WSS-M2P122-B1, 10 Cycles WSS-M2P122-B2, 60 Cycles Components coated to these specifications must meet the Wheel Engineering Specification for Corrosion. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 COATING REPAIR Any coating repair process must have prior approval by the Materials & Wheel Engineering Activity. 4.2 CORROSION For additional corrosion information see documents ARL 18-0034 and SDS SU-0038.
