1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2012 11 08 N-STATUS No longer in use. A. Wedepohl, NA 2003 07 24 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.3, 3.15, 4 deleted 1992 11 23 NGA1E10248991003 Revised 3.4, 3.8, 3.10 A. Vallabhanath 1992 05 01 DF00E00107002157 Released A. Vallabh
2、anath L. Rumao Controlled document at www.MATS Copyright 2012, Ford Global Technologies, Inc. Page 1 of 2 MAGNET, PERMANENT, THERMOPLASTIC BONDED, ORIENTED WSF-M4L5-A3 1. SCOPE NOT FOR NEW DESIGN The material defined by this specification is a thermoplastic bonded, oriented barium ferrite magnet. 2.
3、 APPLICATION This specification was released originally to define material used in magnetic 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.
4、4 MELT TEMPERATURE, min 155 C (ASTM D 789 or ASTM D 3417) 3.5 SPECIFIC GRAVITY, min 3.32 (ASTM D 792) 3.6 ASH 90 +/- 3% (ASTM D 2584) 3.7 HARDNESS, DUROMETER D, min 75 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.8 TENSILE STRENGTH AT 23 C, min 11
5、 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed (unfilled), 5 mm/min (filled) 3.9 FLEXURAL MODULUS, min 20 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) ENGINEERING MATERIAL SPECIFICATION WSF-M4L5-A3
6、Copyright 2012, Ford Global Technologies, Inc. Page 2 of 2 3.10 IMPACT STRENGTH, IZOD, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.10.1 At 23 +/- 2 C 10 J/m The test specimens must be conditioned for minimum of 6 h at the above specif
7、ied temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted outside, but within 5 s. 3.11 HEAT DEFLECTION TEMPERATURE, min 70 C (ASTM D 648, at 0.45 MPa) 3.12 RESIDUAL INDUCTION (BR) 0.25 - 0.29 T (ASTM A 34, at 20 C) 3.13 COERCIVE FORCE (HC) 174 - 217 kA/m (ASTM A 34, at 20 C) 3.14 INTRINSIC COERCIVE FORCE (Hci) 272 - 418 kA/m (ASTM A 34, at 20 C)
