1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 04 27 Activated R. Cuhna Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 2 PHOSPHATE SOLUTION, ZINC, ADDITIVE WSS-M5B420-A 1. SCOPE The material defined by this specification is a zinc phosphate sol
2、ution additive. 2. APPLICATION This specification was released originally for material used as an additive in spray only phosphate equipment. It is used in combination with WSS-M5B419-A Phosphate Solution, Zinc, Start Up and WSS-M5B421-A Phosphate Solution, Zinc, Make Up. 3. REQUIREMENTS 3.1 STANDAR
3、D REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION Nitrate as NO320.4 +/- 2.5% Nickel as Ni 1.0 +/- 0.4% Manganese as Mn 7.6 +/- 1.0% 3.3 pH VALUE 1% SOLU
4、TION BY WEIGHT AT 20 C 2.8 +/- 1.0 3.4 DENSITY, g/cm3 1.27 +/- 0.05 (ASTM D 1475) 3.5 ACIDITY Total (Sodium hydroxide 0.1N) Indicator: Phenolphthalein 0.3 +/- 0.2 mL ENGINEERING MATERIAL SPECIFICATIONWSS-M5B420-A Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of
5、 2 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 The phosphate system released by this specification shall be supported by the following materials: 4.1.1. Phosphate Solution, Zinc, Alkaline Cleaner ESK-M5B393-A 4.1.2. Phosphate Solution, Zinc, Start Up WSS-M5B419-A 4.1.3. Phosphate Solution, Zinc, Make Up WSS-M5B421-A 4.1.4. Phosphate Solution, Zinc, Make up fluoride WSS-M3B72-A4 4.1.5. Phosphate Solution, Zinc, Passivating Solution SK-M5B9580-A
