1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 02 25 N-STATUS Replaced by WSS-M4D585-B; Fixed numbering in 3.5.6 G. Kowalski 2007 02 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1992 07 01 Released EP00E10176272000 P. Kuntze Printed copies are uncontrolled Copyright 2
2、008, Ford Global Technologies, LLC Page 1 of 6 ABS + POLYCARBONATE BLEND (ABS+PC) MEDIUM WSK-M4D685-A IMPACT STRENGTH MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a medium impact strength easy flow molding compound based on acrylonit
3、rile-butadiene-styrene/ polycarbonate (ABS + PC) blend. 2. APPLICATION This specification was released originally for material used for unpainted visible pigmented exterior parts. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to
4、 the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 16 - 22 g/10 minutes (ISO 1133/ASTM D 1238, 260 C, 5 kg) The material shall be dried for 2 h minimum at 110 - 115 C in a mechanical convection oven immediately preceding the test.
5、 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 +/- 0.2 mm Speci
6、mens 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D685-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC
7、 Page 2 of 6 3.5.2 Density 1.11 - 1.18 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 48 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute) 3.5.3.1 Elongation at Break, min 50% (Test Method according to para 3.5.3) 3.5.4 Flexural M
8、odulus, min 1.9 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 600 - 900 GPa (ASTM D 4065, forced constant ampli
9、tude, 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 b
10、e plotted for -50 to +140 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 40
11、 kJ/m2 3.5.6.2 At -20 +/- 2 C 30 kJ/m2 3.5.6.3 At -40 +/- 2 C 20 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 wit
12、hin 5 s. ENGINEERING MATERIAL SPECIFICATION WSK-M4D685-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 6 3.5.7 Heat Deflection Temperature, min 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 1.80
13、MPa) 3.5.8 Vicat Softening Temperature, min 117 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) All specimens dry as molded. If not tested immediately after molding, specimens must be s
14、tored 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 property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change, max +15%
15、 (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max -25% (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 1.6 +/- 0.1 mm with a smooth
16、 surface. 3.7 WEATHERING RESISTANCE After 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/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A sligh
17、t loss of gloss or chalking will be allowed provided 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 Flor
18、ida exposure results for final approval. ENGINEERING MATERIAL SPECIFICATION WSK-M4D685-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 6 3.7.1 Xenon Arc Weatherometer Rating 4 (SAE J1960, 660 kJ/m2 exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +
19、/- 0.2 mm thick, molded in smooth polished mold) 3.7.2 12 months Florida Rating 4 (FLTM BI 160-1, 5 south, direct weathering inland, specimen size: 150 x 100 min, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.3 24 months Florida Rating tbd (FLTM BI 160-01, 5 south, direct weathe
20、ring inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth 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 7.5
21、- 8.2-5/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 0.5 - 0.7% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.03 - 0.10% . After 30 minutes at 12
22、0 C 0.15 - 0.25% 5.3 MELT VOLUME RATE 15 - 21 cm3/ (ISO 1133/ASTM D 1238, 260 C, 5 kg) 10 minutes The material shall be dried for min of 2 h at 105 - 110 C in a mechanical convection oven immediately preceding the test. ENGINEERING MATERIAL SPECIFICATION WSK-M4D685-A Printed copies are uncontrolled
23、Copyright 2008, Ford Global Technologies, LLC Page 5 of 6 5.4 HEAT DEFLECTION TEMPERATURE, min 120 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) 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. 5.5 RECYCLING CODE SAE ABS+PC or ABS+PC ENGINEERING MATERIAL SPECIFICATION WSK-M4D685-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 6 of 6
