1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2014 01 16 N Status Replaced by WSS-M4D1052-A1/A2/A3 G. Eaton, NA 2006 01 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1994 06 23 Released C10418354 L. Rodigas Copyright 2014, Ford Global Technologies, LLC Page 1 of 7
2、POLYCARBONATE (PC), MOLDING COMPOUND, WSK-M4D775-A1 EXTERIOR POLYCARBONATE (PC), MOLDING COMPOUND, WSK-M4D775-A2 OPTICAL GRADE, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are UV-stabilized polycarbonate molding compounds. WSK-M4D775-A2 materials are
3、 additionally required to fulfill optical performances. 2. APPLICATION These specifications were released originally for materials used for “FORD“ oval badges (WSK-M4D775-A1), and lenses of front headlamps and rear lamps (WSK-M4D775-A2). 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATER
4、IALS Material suppliers and part producers must 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
5、 Rate (ISO 1133, 300 C, 1.2 kg) 6 - 15 g/10 minutes The material shall be dried for 2 h at 125 - 130 C in a mechanical convection oven immediately preceding 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 m
6、olded 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 portion of the test specimen A and/or B. The specimens shall be prepared acc
7、ording to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSK-M4D775-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 2 of 7 3.5.2 Density 1.18 - 1.22 g/cm3 (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 60 MPa (ISO R 527, 150 min x 10 x 4.0 +/- 0.2 mm specim
8、en, 50 mm/minute) 3.5.3.1 Elongation at Break, min 90% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 2.2 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%,
9、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). WSK-M4D775-A1 690 - 1050 MPa WSK-M4D775-A2 650 - 990 MPa Additionally, Shear Modulus vs. Temperatu
10、re curves shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curves must be within tolerance range shown on page 6 (WSK-M4D775-A1) and page 7 (WSK-M4D775-A2). (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens fo
11、r each test) 3.5.6.1 At 23 +/- 2 C 10 kJ/m2 3.5.6.2 At -40 +/- 2 C 5 kJ/m2 3.5.6.3 At 10 +/- 2 C 7 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. (s) 3.5.7 Heat Deflec
12、tion Temperature, min 120 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection. 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 filled with silica gel. ENGINEERING MATERIAL SPECIFI
13、CATION WSK-M4D775-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 3 of 7 (s) 3.5.8 Vicat Softening Temperature, min 140 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 50 N load) All specim
14、ens 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, except 150 +/- 50 air changes/h, 1000 h at 110 +/- 2 C. Unaged property values shall be determined at the time of
15、the aged properties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 30% (Test Method per para 3.5.3) 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. 3.7 WEATHERING RESISTANCE Af
16、ter exposure in accordance with 3.7.1, 3.7.2 and 3.7.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISOI 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be al
17、lowed provided an acceptable appearance can be achieved by washing and/or polishing with Ford car polish (auto wax) after the outdoor exposure, at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending
18、 Florida and Arizona exposure results for final approval. 3.7.1 Xenon Arc Weatherometer Rating 4 (SAE J1960, 1980 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSK-M4D775-A1/A2 Copyright 2014, For
19、d Global Technologies, LLC Page 4 of 7 3.7.2 12 months Florida Rating 4 12 months Arizona (NAAO only) (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.3 24 months Florida Rating 3-4 24 months Arizona (NAAO
20、only) (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8 OPTICAL PROPERTIES (WSK-M4D775-A2 only) (s) 3.8.1 Luminous Transmittance, min 87% (ASTM D 1003, 3.2 +/- 0.2 mm thick, clear, molded sheet) (s) 3.8.2 Ha
21、ze, max 1.5% (ASTM D 1003, 3.2 +/- 0.2 mm thick, clear, molded sheet) 3.8.3 Yellowness Index, max (ASTM D 1925, 3.2 +/- 0.2 mm thick, clear, molded sheet. Test to be performed after exposure according to Test Method per para 3.7.1 and para 3.7.2) Before rating, the specimens are to be treated with F
22、ord car polish (auto wax) at permission of the affected Product Development Materials Activity. 3.8.3.1 Unexposed 2 3.8.3.2 After 1320 kJ/m2 exposure 4 3.8.3.3 After 2000 kJ/m2 exposure 6 3.8.3.4 After 12 Months Florida 3 5. GENERAL INFORMATION The information given below is provided for clarificati
23、on and assistance in meeting the requirements of these specifications. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7 10-5/C (ASTM E 228 or TMA, temperature range -20 to +40 C) ENGINEERING MATERIAL SPECIFICATION WSK-M4D775-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 5 of 7 5.2 MOLD SHRIN
24、KAGE (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 0.7 - 0.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.05% . After 30 min at 120 C 0.07% 5.3 MELT VOLUME RATE (ISO 1133, 300 C,
25、 1.2kg) 5 - 15 g/10 minutes Note: The material shall be dried for 2 h minimum at 125 - 130 C in a mechanical convection oven immediately preceding the test. 5.4 IMPACT STRENGTH, IZOD, min (ISO 180/4A, 63.5 x 12.7 x 3.2 +/- 0.2 mm specimen, 10 specimens for each test) 5.4.1 At 23 +/- 2 C 70 kJ/m2 5.4
26、.2 At -40 +/- 2 C 10 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. 5.5 Heat Deflection Temperature, min 135 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.
27、01 mm deflection. At 0.45 MPa) 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. 5.6 RECYCLING CODE PC ENGINEERING MATERIAL SPECIFICATION WSK-M4D775-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 6 of 7 ENGINEERING MATERIAL SPECIFICATION WSK-M4D775-A1/A2 Copyright 2014, Ford Global Technologies, LLC Page 7 of 7
