1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 07 23 N Status Replaced by WSS-M4D813-B1/2 M. Gramlich, NA 2006 03 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1992 04 06 Released NB00I10043054178 TRB J. Burke LM Controlled document at www.MATS Copyright 2012, F
2、ord Global Technologies, LLC Page 1 of 5 POLYCARBONATE + ABS BLEND, (PC+ABS) HIGH WSB-M4D813-A IMPACT, PLATING GRADE MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a plateable grade high impact thermoplastic molding compound based on a polycarbo
3、nate + acrylonitrile/butadiene/styrene (PC+ABS) blend. 2. APPLICATION This specification was released originally for material used for chromium plated exterior components, where a high impact material is required. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers
4、and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate See Approved Source List (ISO 1133/ASTM D 1238. 260 C, 5 kg) The material shall be dried for 4 h minimum at 82 +/- 2 C in a mechanical convection
5、 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 (Tensile Bar, ISO 316
6、7) 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 prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.11 - 1.16 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING M
7、ATERIAL SPECIFICATION WSB-M4D813-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 5 3.5.3 Tensile Strength at Yield, min 44 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Yield, min 3.9% (Test Method according to para 3.5.3) 3
8、.5.4 Flexural Modulus, min 1.9 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.5.5 Shear Modulus at 23 C 675 - 1000 MPa (ASTM D 4065, force
9、d 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 minutes minimum). Additionally, a Shear Modulus vs. Temperatu
10、re 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. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1
11、At 23 +/- 2 C 41 kJ/m2 3.5.6.2 At -40 +/- 2 C 25 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 the cold box, if not possible, test can be conducted outside, but within 5 s. 3.5.7 H
12、eat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at standard deflection of 0.32 +/- 0.01 mm) 3.5.7.1 At 1.82 MPa 89 C 3.5.7.2 At 0.45 MPa 108 C ENGINEERING MATERIAL SPECIFICATION WSB-M4D813-A Copyright 2012, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Vicat
13、 Softening Temperature, min 108 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 not tested immediately after molding, specimens must be stored in a seale
14、d, 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 85 +/-2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined at the time
15、 of the aged properties determination) 3.5.9.1 Tensile Strength at Yield Change, max +25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max -25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 6
16、0 Formation of excessive amounts 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 3.2 +/-0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provi
17、ded for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 6.3 - 7.7-5/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
18、C 0.5 - 0.7% 5.2.2 Post Shrinkage, typical . After 48 h at 80 C 0.04 ENGINEERING MATERIAL SPECIFICATION WSB-M4D813-A Copyright 2012, Ford Global Technologies, LLC Page 4 of 5 5.3 ROCKWELL HARDNESS, average 80 - 115 (ISO 2039-2/ASTM D 785) 5.4 INSTRUMENTED IMPACT STRENGTH, typical (ASTM D 3763, 50 mm
19、 diameter, 3.2 +/- 0.2 mm thickness specimens, 12.7 mm dart, 38 mm support opening) . At 23 C 40 - 50 J . At - 30 C 30 - 35 J 5.5 Elongation at Break, min 70% (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/-0.2 mm specimen, 50 mm/minute test speed) 5.6 RECYCLING CODE SAE or PC+ABS OPTIONAL PC+ABS ENGINEERING MATERIAL SPECIFICATION WSB-M4D813-A Copyright 2012, Ford Global Technologies, LLC Page 5 of 5
