1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 02 27 N-STATUS Replaced by WSS-M4D585-B G. Kowalski 2006 01 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 08 01 Released EP00E01031538000 P. Kuntze Printed copies are uncontrolled Copyright 2008, Ford Global Technolog
2、ies, LLC Page 1 of 5 ABS + POLYCARBONATE BLEND (ABS+PC) MOLDING WSK-M4D769-A COMPOUND, PAINTABLE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a molding compound based on acrylonitrile-butadiene-styrene/polycarbonate (ABS+PC) blend. 2. APPLICATION This specific
3、ation was released originally for material used for painted wheel covers. 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-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1
4、Melt Flow Rate 10 - 15 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 preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall b
5、e 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 center portion of the test specimen A and/or B. The spe
6、cimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.12 - 1.16 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATION WSK-M4D769-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5.3 Tensile Stre
7、ngth at Max Load, min 53 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.3.1 Elongation at Break, min 80% (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 2.2 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm speci
8、men, 64 mm support span) 3.5.5 Shear Modulus at 23 C 840 - 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 between clamps 35 - 40 mm soak time at eac
9、h temperature interval: 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +145 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
10、 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 40 kJ/m2 3.5.6.2 At 0 +/- 2 C 35 kJ/m2 3.5.6.3 At -40 +/- 2 C 20 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperatu
11、re 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 92 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 1.82 MPa) All specimens dry as molded. If not tested immediately after molding specimen
12、s must be stored in a sealed moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATION WSK-M4D769-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Vicat Softening Temperature, min 110 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm spec
13、imens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 49.0 N) 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 Performan
14、ce (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max -35% (Test Method per p
15、ara 3.5.6.1, specimens 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 cle
16、ar film or droplets is cause for rejection. 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 7.0 - 8-5/C (ASTM D 696) ENGINEERING MATERIAL SPECIFICATION WSK-M
17、4D769-A 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 0.40 - 0.65% 5.2.2 Post Shrinkage (Separate specimens require
18、d for each test) After 48 h at 80 C 0.05% After 30 minutes at 120 C 0.10 - 0.20% 5.3 MELT VOLUME RATE 9 - 14 cm3/10 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 immediately preceding the test. 5.4 HEAT DEFLECTIO
19、N TEMPERATURE, min 125 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D769-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
