1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver. 3 2008 08 20 N-STATUS Replaced by WSK-M4D827-A C. Boese, FNA 2006 05 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 & 4 1994 02 28 Released NGA1E10370437002 A. Vallabhanath Printed copies are uncontrolled Copyright 2008, Ford
2、 Global Technologies, LLC Page 1 of 5 ABS MOLDING COMPOUND, CLEAR, INTERIOR WSF-M4D881-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a clear molding compound based on acrylonitrile/butadiene/styrene. 2. APPLICATION This specification was released originally f
3、or material used for visible interior parts, such as integrated control panel button with inmold decoration. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1
4、111-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 1.0 - 3.6 g/10 minutes (ISO 1133/ASTM D 1238, 220 C, 10 kg) The material shall be dried for min of 2 h at 80 - 85 C in a me
5、chanical convection oven immediately 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 (T
6、ensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the centre portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSF-M4D881-A Printed copies are un
7、controlled Copyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.05 - 1.11 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 40 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) (s) 3.5.4 Flexural Modulus, min 1.8 GPa (ISO 178,
8、80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 7.6 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 centre of specimen A. Specimen length between clamps 35-4
9、0 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. (s) 3.5.6 Impact Strength, Izod, min
10、 (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 4.9 kJ/m 3.5.6.2 At -5 +/- 2 C 2.5 kJ/m 3.5.6.3 At -40 +/- 2 C 0.8 kJ/m The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperatur
11、e testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min 74 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 1.80 MPa) (s) 3.5.8 Vicat Softening Temperature, min 85 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. At 50 N
12、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. ENGINEERING MATERIAL SPECIFICATION WSF-M4D881-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5
13、 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 80 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change, max +25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max
14、 -25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 30 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 90 Formation of a
15、 clear film, droplets or crystals is cause for rejection. 3.8 WEATHERING RESISTANCE After exposure in accordance with 3.8.1, 3.8.2, and 3.8.3 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 shal
16、l be no cracking, crazing or other deterioration. 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 t
17、he preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.8.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 300 kJ/m exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSF-
18、M4D881-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 4 of 5 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) 3.8.3 12 months Townsville (FOA only)
19、 Rating 3-4 (20 north, under glass, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.9 OPTICAL PROPERTIES (s) 3.9.1 Luminous Transimttance, min 85% (ASTM D 1003, 3.2 +/- 0.2 mm thick, clear, molded sheet) (s) 3.9.2 Haze, max 5% (ASTM D 1003, 3.2 +/- 0.2 m
20、m thick, clear, molded sheet) 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 8.5-5/ 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 0.7% 5.3 RECYCLING CODE ABS ENGINEERING MATERIAL SPECIFICATION WSF-M4D881-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
