1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 14 A1 N-STATUS No replacement named J. Crist, NA 2006 02 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 Corrected numbering 3.5.6 1991 01 02 Released EP00E01089480000 L. Rodigas Printed copies are uncontrolled Copyright 201
2、0, Ford Global Technologies, LLC Page 1 of 5 POLYPROPYLENE (PP) COPOLYMER, 40% MINERAL WSK-M4D788-A1 FILLED, COLOR PIGMENTED MOLDING COMPOUND, GENERAL PURPOSE NOT TO BE USED FOR NEW DESIGN POLYPROPYLENE (PP), COPOLYMER, 40% MINERAL WSK-M4D788-A2 FILLED, COLOR PIGMENTED MOLDING COMPOUND, INTERIOR POL
3、YPROPYLENE (PP), COPOLYMER, 40% MINERAL WSK-M4D788-A3 FILLED, COLOR PIGMENTED MOLDING COMPOUND, EXTERIOR 1. SCOPE The materials defined by these specifications are 40% mineral (talc) filled, black, and color pigmented injection molding compounds based on polypropylene copolymer. WSK-M4D788-A2 and WS
4、K-M4D788-A3 materials contain weathering requirements necessary for interior and exterior applications, respectively. 2. APPLICATION These specifications were released originally for materials used for: WSK-M4D788-A1 - interior of glove box and other general purpose applications, WSK-M4D788-A2 - var
5、ious interior applications such as pillar trims, WSK-M4D788-A3 - various exterior applications such as gasket radio antenna, etc. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production
6、 Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 4.0 - 8.0 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Mineral Content 38 - 42% (ISO 3451/1, Method A, talc filler 3 h at 650 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specim
7、ens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D788-A1/A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 The following dimensions are required: A. 15
8、0 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 prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.21 - 1.27 g/cm3(ISO 118
9、3, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 20 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.4 Flexural Modulus, min 3.5 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span)
10、 3.5.5 Shear Modulus at 23 C 1.30 - 2.18 GPa (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.) Additionally, a Shear Modulus vs. Tempe
11、rature curve shall be plotted for -50 to +140 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.
12、6.1 At 23 +/- 2 C 2.8 kJ/m23.5.6.2 At -40 +/- 2 C 1.8 kJ/m23.5.6.3 At 10 +/- 2 C 2.3 kJ/m2The 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 conduct
13、ed 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 70 C 3.5.7.2 At 0.45 MPa 125 C ENGINEERING MATERIAL SPECIFICATIONWSK-M4D788-A1/A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies
14、, LLC Page 3 of 5 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impa
15、ct Strength, Izod Change, max -15% (Test Method per para 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 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog
16、 Number, min 90 Formation of excessive amounts of clear film or droplets is cause for rejection. 3.8 WEATHERING RESISTANCE (WSK-M4D788-A2 only) After exposure 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 fo
17、r 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 be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume), or equivalent at per
18、mission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.8.1 Xenon Arc Weatherometer Rating 4-5 (SAE J1885, 1240 kJ/m2exposure minimum, specimen size: 150 x 10
19、0 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.8.2 12 months Florida Rating 4-5 (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) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D788-A1/A2/A3 Printed copi
20、es are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 3.9 WEATHERING RESISTANCE (WSK-M4D788-A3 only) After exposure in accordance with 3.9.1, 3.9.2 and 3.9.3, the material shall show no color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change i
21、n Color, 10 step). In addition, there shall 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 polishing with Ford car polish (auto wax) at permission of the affected Product Development Materials Ac
22、tivity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final approval. 3.9.1 Xenon Arc Weatherometer Rating 4 (SAE J1960, 1980 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 3.2 +/- 0.2 mm thick, molded in smooth polis
23、hed mold) 3.9.2 12 months Florida Rating 4 (FLTM BI 160-01, 5 south, direct weathering inland, specimen size: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.9.3 EAO & NAAO ONLY 24 months Florida Rating 3-4 (FLTM BI 160-01, 5 south, direct weathering inland, specimen s
24、ize: 150 x 100 mm, minimum, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 3 7-5/ C (ASTM D 696) 5.2
25、 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 0.4 - 1.2% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.1 - 0.2% . After 30 min at 120 C 0.1 - 0.3% ENGINEERING MATERIAL SPECIFICATIONWSK-M4D788-A1/A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
