1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 03 14 N-STATUS Replaced by WSB-M4D924-A G. Kowalski 2006 02 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1992 06 01 Released EP00E10176270000 P. Kuntze Printed copies are uncontrolled Copyright 2008, Ford Global Technolo
2、gies, LLC Page 1 of 5 ABS + POLYCARBONATE (ABS+PC) BLEND, MEDIUM WSK-M4D791-A2 HEAT RESISTANT, IMPROVED LOW TEMPERATURE IMPACT MOLDING COMPOUND, INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a medium heat resistant molding compound based on acrylonitri
3、le/butadiene/styrene + polycarbonate blend (ABS+PC) with improved low temperature impact. 2. APPLICATION This specification was released originally for material used for visible interior body parts. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part produc
4、ers must conform to the Companys Standard Requirements For Production 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 minimum at 105 - 110 C in a mechanical convection oven immediately
5、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 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
6、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 allowed. ENGINEERING MATERIAL SPECIFICATION WSK-M4D791-A2 Printed copies are uncontrolled Copyright 2008, Ford Glob
7、al Technologies, LLC Page 2 of 5 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 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
8、 to para 3.5.3) 3.5.4 Flexural Modulus, min 1.8 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 620 - 900 MPa (AS
9、TM 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 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 Modul
10、us vs. Temperature curve shall be 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 eac
11、h test) 3.5.6.1 At 23 +/- 2 C 45 kJ/m2 3.5.6.2 At -40 +/- 2 C 20 kJ/m2 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 c
12、an be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, 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 s
13、ealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATION WSK-M4D791-A2 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 - silicon
14、e 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 stored in a sealed, moisture-proof container filled with silica gel. 3.5.9 Heat Aging Performance (ISO 188/AST
15、M 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% (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, s
16、pecimens 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 surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 95 Formation of excessive amounts of clear film or dro
17、plets is cause for rejection. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1 and 3.8.2 the material shall show no fading or 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 d
18、eterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume), or equivalent, after the Florida exposure. All initial approvals will be based on the preliminary Weatherometer exposur
19、e, pending Florida exposure results for final approval. ENGINEERING MATERIAL SPECIFICATION WSK-M4D791-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 3.8.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 300 kJ/m2 exposure minimum, specimen size: 150 x 100 m
20、m minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4 (FLTM BI 160-01, 5 south, under glass, 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 clar
21、ification 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) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.5 - 0.7%
22、 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 - 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
23、2 h minimum at 105 - 110 C in a mechanical convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min 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-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
