1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 04 11 N-STATUS Replaced by WSS-M4D585-B G. Kowalski 2006 03 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1993 09 14 Released NB00I10043054284 M.A. Myers Printed copies are uncontrolled Copyright 2008, Ford Global Technolo
2、gies, LLC Page 1 of 5 POLYCARBONATE + ABS BLEND, (PC+ABS) WSB-M4D816-A2 MEDIUM IMPACT, HIGH HEAT MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic high heat, medium impact molding compound based on a modified polycarbonate + acrylon
3、itrile-butadiene-styrene blend (PC+ABS). 2. APPLICATION This specification was released originally for material used for painted cowl vent grilles. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requireme
4、nts 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 Rate 12.0 - 19.0 g/ (ISO 1133, 260 C, 5 kg) 10 minutes 3.5 MOLDED TEST SPECIMEN 3.5.1 Pre
5、paration 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 Specimens with shorter dimensions shall
6、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 1.09 - 1.13 g/cm3 (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATION WSB-M4D816-A2 Printed copies are uncontrolled Copyright 2008, Ford Globa
7、l Technologies, LLC Page 2 of 5 (s) 3.5.3 Tensile Strength at Yield, min 52.0 Mpa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.3.1 Elongation at Yield, min 25.0% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 2.1 GPa (ISO 178, 80 x 10 x
8、 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 820 - 1240 MPa (ASTM 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
9、between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. (s) 3.5.6 Imp
10、act Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 38.0 kJ/m2 3.5.6.2 At -40 +/- 1 C 15.0 kJ/m2 3.5.6.3 At 0 +/- 2 C 33.0 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to
11、 impact test. Low temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min 87 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 stor
12、ed in a sealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATION WSB-M4D816-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.8 Vicat Softening Temperature, min 105 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. B
13、ath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 50 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 (I
14、SO 188, except 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 +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max -25% (Test Method per para 3.5.6.
15、1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 90 Formation of clear film or droplets is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.3 +/- 0.1
16、 mm with a smooth surface. 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 8.6-5/C (ASTM E 831 or TMA, temperature range -30 to +30 C) ENGINEERING MATERIAL S
17、PECIFICATION WSB-M4D816-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 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 0.56 - 0.62% 5.2.2 Post Shrinkage (Separ
18、ate specimens required for each test) . After 48 h at 80 C 0.04 - 0.16% . After 30 min at 120 C 0.23 - 0.41% 5.3 INSTRUMENTED IMPACT STRENGTH, min (ASTM D 3763, 50 mm diameter, 3.2 +/- 0.2 mm thickness specimens 12.7 mm dart, 38 mm support opening) At 23 C 46.8 J -30 C 52.0 J 5.4 RECYCLING CODE ABS+PC ENGINEERING MATERIAL SPECIFICATION WSB-M4D816-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
