1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 12 16 Re-Activated Specification needed for new design and there is no replacement M. Gramlich, NA 2010 06 17 N-STATUS No replacement named M. Gramlich, NA 1963 07 29 Released F6-1092 Printed copies are uncontrolled Copyright 2010, Ford G
2、lobal Technologies, Inc. Page 1 of 2 COPPER WIRE, SOFT OR ANNEALED ROUND TINNED ESF-M2L3-A 1. SCOPE The material defined by this specification is tinned soft or annealed round copper wire. 2. APPLICATION This specification was released originally for material used for electrical purposes. 3. REQUIRE
3、MENTS The tinned soft or annealed round copper wire shall conform to ESF-M2L1-A except as noted herein. 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 WIRE SIZE
4、 The wire size shall be specified on the engineering drawing and/or release according to the American Wire Gage number desired. Example: 20 gage ESF-M2L3-A. 3.2 COATING The pure tin coating shall be continuous and shall be firmly adherent to the surface of the copper. The continuity and adherence of
5、 the coating shall be determined on representative samples taken before stranding or insulating. The continuity and adherence of the coating shall be determined in accordance with ASTM B 33. 3.3 ELECTRICAL RESISTIVITY The electrical resistivity at a temperature of 20 C shall not exceed the following
6、 values prescribed for the corresponding wire gage. AWH Size Electrical Resistivity Ohm lb/mile2 (Ohm g/m2) 0 0000 896.15 (0.15694) 1 9 900.77 (0.15775) 10 23 910.15 (0.15940) 24 29 929.52 (0.16279) 30 - 40 939.51 (0.16454) ENGINEERING MATERIAL SPECIFICATIONESF-M2L3-A Printed copies are uncontrolled
7、 Copyright 2010, Ford Global Technologies, Inc. Page 2 of 2 3.4 DIMENSIONAL TOLERANCES Permissible variations are as follows: Minimum Diameter Permissible Variation in Diameter in (mm) Plus Minus Under 0.0100 (0.254) 0.0004 in (0.010 mm) 0.000 0.0100 (0.254 and over) 4% 0.000 3.5 ELONGATION, in 10 in (254 mm), %, min Diameter in (mm) 0.2894 (7.351) and above 30 0.1020- 0.2893 (2.591 - 7.348) 25 0.02011 - 0.1019 (0.5108- 2.588) 20 0.01127 - 0.02010 (0.2863- 0.5105) 15 0.01126 (0.2860) and under 10
