1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2008 02 25 N-STATUS Replaced by WSB-M4D924-A G. Kowalski 2005 11 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.9, 3.10 & 4 1989 11 17 Released SM/EQ9859TP P. Kuntze Printed copies are uncontrolled Copyright 2008, Ford Global Technologies,
2、LLC Page 1 of 5 ABS/PC BLEND, MEDIUM IMPACT STRENGTH MOLDING WSK-M4D684-A2 COMPOUND, INTERIOR 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 acrylonitrile-butadiene-styrene/polycarbonate (ABS/PC) blend
3、 2. APPLICATION This specification was released originally for material used for visible interior body parts. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part pro
4、ducers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 14 - 20 g/10 minutes (ISO 1133/ASTM D 1238, 260 C, 5 kg) The material shall be dried for min of 2 h at 105 - 110 C in a mechanical convection oven immediatel
5、y 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
6、 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 according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D684-A2 Printed copies are uncontrolled Copyright 2008, Ford Glo
7、bal Technologies, LLC Page 2 of 5 3.5.2 Density 1.11 - 1.16 g/cm3(ISO R 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 80% (Test Method according to para 3
8、5.3)3.5.4 Flexural Modulus, min 1.7 GPa (ISO 178/ASTM D 790M - Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 600 - 900 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60
9、 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 temperature range, at 5 C minimum intervals. The plott
10、ed 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, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 40 kJ/m23.5.6.3 At -20 +/- 2 C 35 kJ/m23.5.6.2 At -40 +/- 2 C 25 kJ/m2The test spe
11、cimens 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 Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0
12、/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 100 C ENGINEERING MATERIAL SPECIFICATIONWSK-M4D684-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Vicat Softening Temperature, min (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. rai
13、se 50 +/- 5 C/h. Dial gage reset to “0“ after addition of weight.) 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. 3.5.8.1 At 49.0 N 117 C 3.5.9 Heat Ageing Performance (ISO 188/ASTM D 573, 1
14、000 h at 90 +/- 2 C) 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 ageing) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required fo
15、r material approval is 355 x 100 x 1.6 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for rejection. 3.8 WEATHERING RESISTANCE After exp
16、osure in accordance with 3.8.1 and 3.8.2 the material shall show no fading or color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will
17、be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume). ENGINEERING MATERIAL SPECIFICATIONWSK-M4D684-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 3.8.1 Xenon Arc Weatherometer Ratin
18、g 4 (SAE J 1885, 300 kJ/m2exposure minimum, specimen size: 150 x 100 mm 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
19、 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 - 8-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded sp
20、ecimen) 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 0.02 - 0.03% After 30 minutes at 120 C 0.15 - 0.20% 5.3 MELT VOLUME RATE 15 - 21 cm3/10 minutes (ISO 1133/ASTM D 1238, 260 C, 5 kg) The material sha
21、ll be dried for min of 2 h at 105 - 110 C in a mechanical convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 5.4.1 At 0.45 MPa 120 C 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 SPECIFICATIONWSK-M4D684-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
