1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2013 05 09 N Status Replaced by WRS-M4D729-B6 and B9 V. Cerato, EU 2005 01 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9 Renumbered 3.5 1994 10 31 Released NGA1E10370437010 C. C. Gray Copyright 2013 Ford Global Technologies, LLC
2、Page 1 of 5 POLYPROPYLENE (PP) HOMOPOLYMER, HEAT STABILIZED, WSH-M4D293-B2 20% MINERAL FILLED, 25% MINIMUM RECYCLED CONTENT MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% mineral (talc) filled injection molding compound based on 25% minimu
3、m recycled polypropylene homopolymer obtained from post consumer sources. 2. APPLICATION This specification was released originally for material used for air conditioning and heater housings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers mus
4、t conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 4 - 12 g/ (ISO 1133, 230 C, 2.16 kg) 10
5、 minutes (s) 3.4.2 Filler Content 17 - 23% (ISO 3451/1, Method A, talc filler, 30 minutes at 800 +/- 50 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. T
6、he 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 portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allow
7、ed. ENGINEERING MATERIAL SPECIFICATION WSH-M4D293-B2 Copyright 2013, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.02 - 1.08 g/cm3 (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 29 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.5.
8、4 Flexural Modulus, min 2.2 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 0.85 - 1.40 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
9、 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 versus Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be wi
10、thin tolerance range shown on page 6. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 3.0 kJ/m2 3.5.6.2 At -40 +/- 1 C 1.0 kJ/m2 3.5.6.3 At -10 +/- 2 C 2.0 kJ/m2 The test specimens must be conditioned for minimum
11、of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 66 C 3.5.7.2 At 0.45 MPa 116 C
12、 ENGINEERING MATERIAL SPECIFICATION WSH-M4D293-B2 Copyright 2013, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 140 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.
13、8.1 Tensile Strength at Max +/- 30% Load Change (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod +/- 30% Change (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number
14、, min 90 Formation of clear film, droplets or crystals is cause for rejection. 3.7 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. 3.8 ODOR, max Rating 2 (SAE J1351/FLTM BO 131-01) 5. GENERAL I
15、NFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.12-5/ C (ASTM E 831 TMA, temperature range 20 - 100 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm
16、 injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.0% ENGINEERING MATERIAL SPECIFICATION WSH-M4D293-B2 Copyright 2013, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.2 - 0.5% . After 30 min at 120 C 0.0 - 0.5% 5.3 RECYCLING CODE PP-TD20 ENGINEERING MATERIAL SPECIFICATION WSH-M4D293-B2 Copyright 2013, Ford Global Technologies, LLC Page 5 of 5
