1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 03 14 N-STATUS Replaced by WSS-M4D585-B G. Kowalski 2006 02 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1992 06 01 Released EP00E10176270000 P. Kuntze Printed copies are uncontrolled Copyright 2008, Ford Global Technolog
2、ies, LLC Page 1 of 5 ABS + POLYCARBONATE BLEND (ABS+PC), MEDIUM WSK-M4D791-A1 IMPACT STRENGTH MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a medium impact strength molding compound based on acrylonitrile/butadiene/styrene + polycarbonate blend
3、 (ABS+PC). 2. APPLICATION This specification was released originally for material used for a variety of non-visible and painted parts. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Produ
4、ction Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 10 - 16 g/10 minutes (ISO 1133/ASTM D 1238, 260 C, 5 kg) The material shall be dried for 2 h min. at 105-110 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Tes
5、t 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 be cut from the
6、 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-M4D791-A1 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.11 - 1.18 g/cm3 (ISO
7、 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 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min 50% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 1.8 GPa (ISO 178/ASTM D 7
8、90M, 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 620 - 900 MPa (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). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +140 C temperatu
10、re 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 45 kJ/m2 3.5.6.2 At -40 +/- 2 C 20 kJ/m
11、2 3.5.6.3 At -20 +/- 2 C 35 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 within 5 s. 3.5.7 Heat Deflection Temper
12、ature, min 105 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 filled with silica gel. ENGINEERING M
13、ATERIAL SPECIFICATION WSK-M4D791-A1 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 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
14、of 5 kg weight. At 49.0 N load) 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 proper
15、ty values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change, max +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)
16、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 surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 95 Formation of excessive amounts of clear film or droplets is cause for rejection. 5. GENERAL INFORMATION The information g
17、iven below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.5 - 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) ENGINEERING MATERIAL SPECIFICA
18、TION WSK-M4D791-A1 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 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 min at 120 C 0.15 -
19、 0.25% 5.3 MELT VOLUME RATE (ISO 1133/ASTM D 1238) 5.3.1 At 260 C, 5 kg 10 - 16 cm3/10 minutes 5.3.2 At 250 C, 5 kg 5 - 11 cm3/10 minutes The material shall be dried for minimum of 2 h at 105 - 110 C in a mechanical convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min
20、 122 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-M4D791-A1 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
