1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 10 09 Revised Para 3.0 inserted; para 3.1, 3.5 and 4 deleted 1993 08 31 C10258825 Revised 3.3 & 3.4, removed 5.2 1991 05 08 C10137430 Released N. Riley EAO, P. Lee NAAO Printed copies are uncontrolled Copyright 2003, Ford Global Technolog
2、ies, Inc. Page 1 of 1 PLATINUM/NICKEL ALLOY, ELECTRODE WSD-M6A107-A1 1. SCOPE The material defined by this specification covers a platinum/nickel alloy. 2. APPLICATION This material was released originally for center and side electrodes in spark plug “long life“ applications. 3. REQUIREMENTS 3.0 STA
3、NDARD 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 (Weight Percent) Platinum Balance Nickel 9.7 - 10.3 Residuals* 0.15 max * Alternatively can be calc
4、ulated by difference. Chemical composition will form part of the agreed control plan. 3.3 HARDNESS, HV 0.3 (Annealed Condition) 200 - 250 (ISO 6507/2, ASTM E 384) The processing route and optimum mechanical properties for fabrication, welding and service performance shall form part of the agreed con
5、trol plan. 3.4 MICROSTRUCTURE Single phase, uniform equiaxed grains, free of discontinuities, intrusions and laps. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RESISTIVITY, micro ohms.cm (typical) 31 (ASTM B 193)
