1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2013 07 26 N Status No replacement named V. Cerato, EU 2005 11 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1992 10 21 Released NB00I10043054208 E.P. Francis Controlled document at www.MATS Copyright 2013, Ford Global
2、Technologies, LLC Page 1 of 5 ACRYLONITRILE STYRENE ACRYLATE + POLYCARBONATE WSB-M4D682-A3 BLEND (ASA+PC), MEDIUM HEAT RESISTANT MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molding compound based on acrylonitrile-styrene-acrylate
3、and polycarbonate. 2. APPLICATION This specification was released originally for material used for unpainted black exterior applications, such as mirror housings, fairings and cowl vent grilles. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers
4、must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 11.0 - 18.0 g/ (ISO 1133/ASTM D 1238, 260 C, 5.0 kg) 10 minutes The material shall be dried for 2 h minimum at 90 C in a mechanical convection oven immediately prec
5、eding the test. 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. 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 +
6、/- 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 allowed. 3.5.2 Density 1.12 - 1.17 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATION
7、WSB-M4D682-A3 Copyright 2013, Ford Global Technologies, LLC Page 2 of 5 3.5.3 Tensile Strength at Yield, min 56 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.3.1 Elongation at Break, min 17.0% (Test Method according to para 3.5.3) 3.5.4 Flexural Mod
8、ulus, min 2.5 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 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 820 - 1220 MPa (ASTM D 4065, forced constant amplit
9、ude, 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, a Shear Modulus vs. Temperature curve shall be
10、plotted for -50 to +120 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 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 specimens for each test) 3.5.6.1 At 23 +/- 2 C 6.0
11、kJ/m2 3.5.6.2 At -40 +/- 2 C 1.5 kJ/m2 3.5.6.3 At -10 +/- 2 C 5.0 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 outside, but wi
12、thin 5 s. 3.5.7 Heat Deflection Temperature, min 88 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm. At 1.80 MPa) All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container
13、filled with silica gel. 3.5.8 Vicat Softening Temperature, min 100 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 49.0 N load) ENGINEERING MATERIAL SPECIFICATION WSB-M4D682-A3 Copyright 2013, Ford
14、Global Technologies, LLC Page 3 of 5 All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 90 +/- 2 C. Unaged p
15、roperty values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Change +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 37
16、95) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 90 Formation of excessive amounts of clear film or droplets is cause for rejection. 3.8 WEATHERING RESISTANCE After expo
17、sure in accordance with 3.8.1, 3.8.2 and 3.8.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed pro
18、vided an acceptable appearance can be achieved by polishing with Ford car polish (auto wax) at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.8.1
19、Xenon Arc Weatherometer Rating 4 (SAE J1960, 1250 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4 (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm th
20、ick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSB-M4D682-A3 Copyright 2013, Ford Global Technologies, LLC Page 4 of 5 3.8.3 24 months Florida Rating 3-4 (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smoo
21、th polished mold) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 4.0 - 4.2-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 m
22、m injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.5 - 0.7% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.7 - 0.9% 5.3 HEAT DEFLECTION TEMPERATURE 102 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm. At 0.45 MPa) 5.4 RECYCLING CODE SAE or ASA+PC ASA+PC OPTIONAL ENGINEERING MATERIAL SPECIFICATION WSB-M4D682-A3 Copyright 2013, Ford Global Technologies, LLC Page 5 of 5
