1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2015 09 16 N Status No future usage S. Ryzyi. NA 2004 05 27 Revised 3.4 note added; A1 through A4 active M. Ward 1992 01 30 C10189636 Released Copyright 2015, Ford Global Technologies, LLC Page 1 of 1 PHOSPHATE COATING, ZINC IRON, AS C
2、OATED WSD-M3P35-A1 PHOSPHATE COATING, MANGANESE IRON, AS COATED WSD-M3P35-A2 PHOSPHATE COATING, ZINC IRON, OILED NOT TO BE USED FOR NEW DESIGN WSD-M3P35-A3 PHOSPHATE COATING, MANGANESE IRON, OILED NOT FOR NEW DESIGN WSD-M3P35-A4 1. SCOPE These specifications define the requirements of a heavyweight
3、phosphate coating applied to iron or steel parts. 2. APPLICATION The phosphate coat is intended to form a base for subsequent bonding for adhesion or oil for corrosion resistance applications. As phosphated (i.e. no subsequent treatment) is generally required for rubber bonding applications. Moderat
4、e corrosion resistance, particularly on components not exposed to weathering, is obtained when finished with oil. 3. GENERAL REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materia
5、ls (WSS-M99P1111-A). 3.2 COATING WEIGHT 10 - 20 g/m2 (FLTM AQ 101-03) Lower coating weights may be acceptable in certain bonding applications and will be part of the Control Plan. 3.3 ADHESION - SCRATCH TEST There shall be no chipping away of the coating upon scratching with a knife blade held at 90
6、 to the surface. 3.4 SALT SPRAY RESISTANCE (ASTM B 117) The parts shall not exhibit any corrosion after salt spray testing as follows: WSD-M3P35-A3 Oiled 24 h WSD-M3P35-A4 Oiled 24 h Note: Oil used shall conform to appropriate health and safety requirements. Note: Chromate rinse treatments to enhance corrosion shall not be used.
