1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 10 09 Revised Para 3.0 inserted; para 3.6 and 4 deleted 1985 03 20 CF40 RD888002-262 Released Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 2 RESISTANCE WIRE, ENAMEL ESF-M6A103-A1 INSULATED (98 C
2、U - 2 NI) RESISTANCE WIRE, ENAMEL ESF-M6A103-A2 INSULATED (94 CU - 6 NI) RESISTANCE WIRE, ENAMEL ESF-M6A103-A3 INSULATED (78 CU - 22 NI) 1. SCOPE The materials defined by these specifications are low resistivity copper-nickel alloy resistance wires. 2. APPLICATION These specifications were released
3、originally for material used as resistance wires in instrument cluster gauges. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 CONSTRUCTION 3.1.1
4、 Enameled The wire shall be light enameled, without increasing the O.D. more than 0.020 mm. The enamel shall be a polyurethane baking type. 3.2 CHEMICAL COMPOSITION A1 A2 A3 (Nominal) Nickel 2 6 22 Copper 98 94 78 3.3 WIRE SIZE AND RESISTANCE The wire shall have an O.D. of approximately #38 B & S Ga
5、uge, 0.15 mm, and shall be drawn to the following resistance at a reference temperature of 20 C. (Gauge of ESF-M6A103-A3 as specified on engineering drawing.) ESF-M6A103-A1 5.964-6.331 /m ESF-M6A103-A2 11.928-12.662 /m ESF-M6A103-A3 As specified on engineering drawing. ENGINEERING MATERIAL SPECIFICA
6、TIONESF-M6A103-A1/A2/A3Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 2 Test Procedure: Determine resistance by ohmic measurement of a 3.05 m length of wire from each continuous spool length assigned for test. The wire should be accurate to within 6 mm. Use
7、a Weston Meter Model #50868 and 48272, or equivalent. 3.4 SPECIFIC RESISTANCE (Nominal) (ASTM B 63 at 20 C) ESF-M6A103-A1 0.050 mm2/m ESF-M6A103-A2 0.096 mm2/m ESF-M6A103-A3 0.30 mm2/m 3.5 TEMPERATURE COEFFICIENT OF RESISTANCE, max (ASTM B 84 between 20 and 100 C) ESF-M6A103-A1 1700 ppm/C ESF-M6A103-A2 900 ppm/C ESF-M6A103-A3 210 ppm/C
