FORD-WSK-M4D749-A-2006.pdf
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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 01 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1992 12 01 Released EP00E10176314000 P. Kuntze Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 POLYBUTYLENE TEREPHTHALATE (PBT), 10
2、% GLASS WSK-M4D749-A FIBER REINFORCED MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 10% glass fiber reinforced thermoplastic polyester molding compound based on polybutylene terephthalate (PBT). 2. APPLICATION This specification was released originally for material used f
3、or electrical connectors. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers mist conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 23 - 30 g/10 minutes (ISO 1133/AS
4、TM D 1238, 260 C, 2.16 kg) The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test. 3.4.2 Glass Fiber Content 9 - 12% (ISO 3451/2, test temperature 750 +/- 25 C, test portion 2.5 - 3.0 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of
5、Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from
6、the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. -,-,- ENGINEERING MATERIAL SPECIFICATION WSK-M4D749-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.34 - 1.38 g/
7、cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 70 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 3.5 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2
8、mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.5.5 Shear Modulus at 23 C 1050 - 1420 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2
9、 mm cut from the center of specimen A. Specimen length between clamps 35 - 40 mm soak time at each temperature interval: 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +220 C temperature range, at 5 C minimum intervals. The plotted curve must be w
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