1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 08 27 N Status Replaced by WSS-M4D854-B1 V. Cerato, EU 2005 12 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1990 07 11 Released NB00IC10083540 M. A. Myers Controlled document at www.MATS Copyright 2012, Ford Global
2、 Technologies, LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 30% GLASS FIBER WSB-M4D732-A3 REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic injection molding compound based on polypropylene homopolymer and reinforced w
3、ith chemically coupled glass fiber. 2. APPLICATION This specification was released originally for material used for battery trays on the 1991 Thunderbird/Cougar. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Stan
4、dard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 2.0 - 6.0 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Glass Fiber Content 28 - 32% (ISO 3451/1, Method A, 1 h at 750 +/- 25 C) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Speci
5、mens 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 the center
6、 portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.10 - 1.16 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 68 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specim
7、en, 5 mm/min test speed) ENGINEERING MATERIAL SPECIFICATION WSB-M4D732-A3 Copyright 2012, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 4.3 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 0.8
8、- 1.34 GPa (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 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,
9、 a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 spe
10、cimens for each test) 3.5.6.1 At 23 +/- 2 C 4.5 kJ/m2 3.5.6.2 At -40 +/- 2 C 3.5 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted
11、outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 130 C 3.5.7.2 At 0.45 MPa 145 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. Unaged property values shall
12、be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod -25% Change, max (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATION WSB-M4D7
13、32-A3 Copyright 2012, Ford Global Technologies, LLC Page 3 of 4 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarificat
14、ion and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 4.0-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 2.0 - 3.5% 5.3 ELONGATION AT BREAK, min 2.0% (Test method according to para 3.5.3) 5.4 HARDNESS, DUROMETER D 75 85 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATION WSB-M4D732-A3 Copyright 2012, Ford Global Technologies, LLC Page 4 of 4
