1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 09 18 Revised Inserted 3.0; Deleted 3.3, 3.4, 3.5, 3.6 & 4 1992 01 02 Revised DF00E00107002102 Revised 3.1.2 & Updated 1967 11 16 Released F6-3253 (Was XF-M99GX2) Printed copies are uncontrolled Copyright 2006, Ford Global Technologies,
2、LLC Page 1 of 3 MAGNET, NONMETALLIC BINDER ESF-M99G115-A 1. SCOPE The material defined by this specification is a synthetic rubber bonded barium ferrite composite material. 2. APPLICATION This specification was released originally for material used as a permanent magnet such as in the distributor. 3
3、. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 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
4、 3.1.1 Specific Gravity, min 3.5 (ASTM D 792) 3.1.2 Hardness, min 43 (ASTM D 2240, Durometer “D“, 10 seconds delay) 3.1.3 Ozone Resistance, max 0 (ASTM D 1149) Test Method: Sample size approximately 7 x 7 x 125 mm. Fix both ends in a clamping device and deflect the center 0.51 mm. Place in ozone cha
5、mber under this stress for 72 h. 3.1.4 Oil Resistance (ASTM D 471, 72 h at 102 C in #3 oil) Volume Change 0 - 8% ENGINEERING MATERIAL SPECIFICATION ESF-M99G115-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.1.5 Reversible Magnetic Temperature Coefficien
6、t, max Loss: 34% of 23 +/- 2 C reading. Test Method: Determine Gauss of magnetized material at 23 +/- 2 C. Raise temperature to 191 +/- 3 C and read Gauss. This value should not be less than 66% of reading at 23 +/- 2 C. Cool to 23 +/- 2 C and read Gauss. It should be the same as the original readin
7、g. 3.2 PART REQUIREMENTS 3.2.1 Magnetic Magnetic properties to be specified on engineering drawing. 3.2.2 Mechanical Properties such as breaking strength, crushing strength, etc., to be specified on engineering drawing. 3.2.3 Surface Condition No evidence of surface cracks, pitting or any other impe
8、rfections. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 TYPICAL DEMAGNETIZATION CURVE See Table on Page 3. ENGINEERING MATERIAL SPECIFICATION ESF-M99G115-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3
