1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 09 30 Revised Para 3.0 inserted; para 4.3 and 4 deleted 1985 02 25 CE3PRD863100E145 3.1 Revised & Retyped J. C. Webster 1964 05 02 F6-1339 Released Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 1
2、 NICKEL, CHROMIUM AND IRON ESF-M6A72-A ELECTRODE ALLOY 1. SCOPE The material defined by this specification is a nickel, chromium and iron alloy. 2. APPLICATION This specification was released originally for material used for the electrodes in spark plugs. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FO
3、R PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 CHEMICAL COMPOSITION Nickel 75.0 min Chromium 14.0 - 16.0 Iron 6.0 - 8.0 Manganese 0.10 - 0.50 Silicon 0.10 - 0.50 Carbon 0.07 max Copper 0.1
4、0 max Sulfur 0.01 max Total Other Elements (Aluminum not allowed) 0.50 max 3.2 ELONGATION (ASTM E 8, 254 mm) 3.2.1 Round Material 25 - 35% 3.2.2 Rectangular Material 30 - 42% 3.2.3 Round Material for Copper Core Sheath 30% min 3.3 GRAIN SIZE (ASTM E 112) 3.3.1 Round Material 8 - 10 3.3.2 Rectangular Material 4 - 6 3.3.3 Round Material for Copper Core Sheath 4 - 8
