1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2012 07 25 N-Status No replacement A. Wedepohl, NA 2005 02 03 Revised Inserted 3.0; Deleted 3.4, 4 1965 06 09 Released (Was XF-M11AX2) F6-1515 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 1 SOLDER, E
2、UTECTIC - LOW DROSS NOT FOR NEW DESIGN ESF-M11A18-A 1. SCOPE The material defined by this specification is a specially processed solder of 63-37 composition containing an extremely low and uniform level of non-metallic inclusions. 2. APPLICATION This specification was released originally for materia
3、l used for the wave soldering of the printed circuit on the transistorized alternator regulator. 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
4、CHEMICAL ANALYSIS Tin 62.0-64.0 Zinc 0.005 max Antimony 0.40 max Bismuth 0.25 max Copper 0.08 max Iron 0.02 max Aluminum 0.005 max Total Other Elements 0.08 max Lead Remainder 3.2 PHYSICAL PROPERTIES Solidus 183 C Eutectic Liquidus 183 C 3.3 OUTGASSING TEST No visible dross or foreign matter. Test M
5、ethod: Place approximately 200 g of solder in a pyrex test tube. All foreign matter introduced in cutting or forming the solder to fit the tube must be removed. The test tube containing the solder is evacuated to a pressure of 10 micrometer of mercury or less, and the solder melted under vacuum in a
6、 bunsen flame. While the solder is molten, the tube is shaken for approximately 1 minute, in an almost horizontal position, to allow any foreign material to rise to the surface. The solder is then allowed to solidify under vacuum and the surface examined visually for dross or other foreign matter. CAUTION: Molten metal under vacuum and in a glass container is a potential hazard. The technician should wear a protective garment and face shield in the event the glass tube fractures.
