1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2008 03 13 N-STATUS Replaced by WSS-M4D585-B or WSB-M4D813-A G. Kowalski 2004 07 30 Revised Para 3.0 inserted; Para 3.5.7.1, 3.5.7.2, 3.7 revised; para 3.1, 3.2, 3.3, 3.8, 3.9, 4 deleted 1992 02 18 Released NC00E10079772017 R. W. Ocobock Prin
2、ted copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 1 of 5 ABS + POLYCARBONATE BLEND (ABS+PC), IMPACT WSA-M4D785-A2 MODIFIED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an impact modified molding compound based on a
3、crylonitrile-butadiene-styrene and polycarbonate (ABS+PC) blends. 2. APPLICATION This specification was released originally for material used for wheel covers and ornaments. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the C
4、ompanys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 14 - 24 g/10 minutes (ISO 1133/ASTM D 1238, 260 C, 5 kg) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on inject
5、ion 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 specimens shall be prepare
6、d according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSA-M4D785-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.12 - 1.15 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min
7、51 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 3.5.3) 3.5.4 Flexural Modulus, min 2.4 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 Sh
8、ear Modulus at 23 C 800 - 1050 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 each temperature interval - 3 minute
9、s minimum) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +180 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 7. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/-
10、 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 42 kJ/m2 3.5.6.2 At -30 +/- 2 C 12 kJ/m2 3.5.6.3 At -40 +/- 2 C 9 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
11、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 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 Mpa 91 C 3.5.7.2 At 0.45 Mpa 112 C ENGINEERING MATERIAL SPECIFICATION WSA-M4D785-A2 Printed copies are uncontro
12、lled 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 specimens. Bath - silicone 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
13、 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/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 80 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3
14、- 5 h at 23 +/- 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 +/- 15% (Test Method per para 3.5.6.1, specimens to be notched before heat aging
15、) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.5 +/- 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 90 Formation of clea
16、r film, droplets or crystals 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 6.2-5/C (ASTM D 696) ENGINEERING MATERIAL SPECIFICATION
17、WSA-M4D785-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 0.54 - 0.67% 5.2.2 Post Shrinkage (Separate specimens
18、 required for each test) . After 48 h at 80 C 0.24 - 0.47% . After 30 minutes at 120 C 0.1 - 0.2% 5.3 INSTRUMENTED IMPACT STRENGTH, min (ASTM D 3763, 50 mm diameter, 3.2 +/- 0.2 mm thick specimen, 12.7 mm dart, 38 mm support opening) 5.3.1 At 23 +/- 2 C 40.0 J 5.3.2 At - 30 +/- 1 C 40.0 J 5.4 MELT FLOW RATE 14.0 - 24.0 g/ (ISO 1133/ASTM D 1238, 250 C, 5 kg) 10 minutes 5.5 RECYCLING CODE SAE or ABS+PC ABS+PC ENGINEERING MATERIAL SPECIFICATION WSA-M4D785-A2 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 5 of 5
