1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 08 27 N Status Replaced by WRS-M4D854-B2 V. Cerato, EU 2005 12 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 2000 01 28 Activated L. Hess Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC
2、 Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 30% GLASS WSS-M4D732-A5 FIBER REINFORCED MOLDING COMPOUND, 25% MINIMUM POST CONSUMER CONTENT 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
3、 and reinforced with chemically coupled glass fiber. 2. APPLICATION This specification was released originally for material used for battery trays and air induction integrated parts. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform
4、 to the Companys Standard 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 Prep
5、aration of 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 b
6、e cut from the center 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) ENGINEERING MATERIAL SPECIFICATION WSS-M4D732-A5 Copyright 2012, Ford Global Technolog
7、ies, LLC Page 2 of 4 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 specimen, 5 mm/min test speed) 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
8、 Modulus at 23 C 0.8 - 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 mi
9、nimum). Additionally, 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.
10、2 mm specimen, 10 specimens 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, t
11、est can be conducted 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 p
12、roperty values shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATION WSS-M4D732-A5 Copyright 2012, Ford Global Technologies, LLC Page 3 of 4 3.5.8.1 Tensile Strength at Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod -25% C
13、hange, max (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 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 pr
14、ovided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 2.9-5/ C (ASTM E 831 (TMA) Temperature Range -30 to 30 C) 5.2 MOLD SHRINKAGE (ISO/DIS 294.3, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 5.2.1 Molding Shrink
15、age . After 48 h at 23 +/- 2 C 0.3 - 0.5% 5.2.2 Post Shrinkage . After 48 h at 80 +/- 2 C 0.5 - 0.8% . After 30 min. at 120 C 0.6 - 1.0% 5.3 ELONGATION AT BREAK, min 2.5% (ISO R 527) 5.4 HARDNESS, DUROMETER D 75 - 85 (ISO 868/ASTM D 2240, 15 s dwell) 5.5 MELT TEMPERATURE 164 C (ISO 3146, Method C, 10 C/min. heating rate) ENGINEERING MATERIAL SPECIFICATION WSS-M4D732-A5 Copyright 2012, Ford Global Technologies, LLC Page 4 of 4
