1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2012 11 08 N-STATUS No longer in use. A. Wedepohl, NA 2003 07 23 Revised Para 3.0 inserted; Para 3.3 & 4 deleted 1985 03 20 Released CF40-RD888002-262 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, Inc. Page 1 of 2
2、MAGNET, PERMANENT NOT FOR NEW DESIGN ESF-M4L4-A 1. SCOPE The material defined by this specification is an iron-cobalt elongated single domain fine particle magnetic material physically dispersed in a non-magnetic (lead) matrix that can be magnetized to produce a permanent magnet. 2. APPLICATION This
3、 specification was released originally for material used as magnets for gages. 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 GENERAL 3.1.1 Resi
4、dual Flux Density (Br) 0.65 - 0.70 T (ASTM A 34) 3.1.2 Coercive Force (Hc) 63.7 - 79.6 kA/m (ASTM A 34) 3.1.3 Energy Product (Bd Hd) 2.0 - 3.0 x 106 (ASTM A 34) 3.2 PART 3.2.1 Specific Gravity, min 9.0 g/cm3 3.2.2 Magnetic These properties for the finished part shall conform to specific requirements
5、 as specified on the engineering drawing. 3.2.3 Physical Condition There shall be no evidence of surface cracks or voids. ENGINEERING MATERIAL SPECIFICATION ESF-M4L4-A Copyright 2012, Ford Global Technologies, Inc. Page 2 of 2 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 CHEMICAL COMPOSITION (Nominal) Pb 60 FeCo 31 Other Elements 9
