1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 09 11 Revised Para 3.0 inserted; Para 4 deleted 1989 06 01 NB00I1002 Released Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 2 ZINC ALLOY, SHEET AND STRIP WSB-M2A98-B 1. SCOPE The material defined
2、 by this specification is a wrought zinc alloy containing copper with good forming properties. 2. APPLICATION This specification was released originally for material used for decorative trim parts that are subsequently chromium electroplated. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION
3、MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION Copper 0.70 - 0.90 Lead 0.005 max Cadmium 0.005 max Iron 0.008 max Zinc Remainder 3.3 MECHANICAL PROPERTIES (ASTM E 8M) 3.3.1 Yield S
4、trength, min 115 MPa 3.3.2 Tensile Strength, min 160 MPa 3.3.3 Elongation, min 35% 3.3.4 Hardness (Rockwell 15 T) 65 +/- 5 * *The hardness shall be measured after a 15 second delay, to allow the indentation to stabilize. 3.4 CHROMIUM ELECTROPLATING This material shall be capable of consistently conf
5、orming to the requirements of the Bright or Low Gloss Decorative Electroplating specification WSB-M1P77, unless otherwise specified on the engineering drawing. ENGINEERING MATERIAL SPECIFICATIONWSB-M2A98-BPrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 2 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Physical Properties Density (Mg/m3) 7.17 Coefficient of Thermal Expansion (1/C) 34.75 X 10E - 6 Electrical Conductivity (% IACS) 28
