1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2011 03 01 N-STATUS, A2 and A3 No replacement named A. Pan, APA 2010 01 14 No replacement named J. Crist, NA N-STATUS, A1 1991 01 02 Released EP00E01089480000 L. Rodigas Printed copies are uncontrolled Copyright 2011, Ford Global Technologies,
2、 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 NOT TO BE USED FOR NEW DESIGN P
3、OLYPROPYLENE (PP), COPOLYMER, 40% MINERAL WSK-M4D788-A3 FILLED, COLOR PIGMENTED MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are 40% mineral (talc) filled, black, and color pigmented injection molding compounds based on polypropylene
4、 copolymer. WSK-M4D788-A2 and WSK-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 a
5、pplications, WSK-M4D788-A2 - various 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 Stan
6、dard Requirements For Production 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
7、3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D788-A1/A2/A3 Copyright 2011, Ford Global Technologies, LLC Page 2 of 5 Printed copies are uncontrolled level below
8、1%. Specimen approx. 60 x 10 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 prepared according
9、to ISO 294. No annealing allowed. 3.5.2 Density 1.21 - 1.27 g/cm3(ISO 1183, 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, Meth
10、od I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 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 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35-40 mm.) Additio
11、nally, a Shear Modulus vs. Temperature 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,
12、10 specimens for each test) 3.5.6.1 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 n
13、ot 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 70 C 3.5.7.2 At 0.45 MPa 125 C ENGINEERING MATERIAL SPECIFICATIONWSK-M4D788-A1/A2/A3 Copyright 2011, Ford Global Technologies
14、 LLC Page 3 of 5 Printed copies are uncontrolled 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 Met
15、hod per para 3.5.3) 3.5.8.2 Impact 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.
16、3.7 FOGGING (FLTM BO 116-03) Fog 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 A
17、ATCC rating (AATCC Gray Scale for 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
18、by volume), or equivalent at permission 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
19、minimum, specimen size: 150 x 100 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 SPECIFICATION
20、WSK-M4D788-A1/A2/A3 Copyright 2011, Ford Global Technologies, LLC Page 4 of 5 Printed copies are uncontrolled 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 Gr
21、ay Scale for 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 polishing with Ford car polish (auto wax) at permission of the affected
22、Product Development Materials Activity. 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
23、mm thick, molded in smooth polished 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, dire
24、ct weathering inland, specimen size: 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 EXP
25、ANSION 3 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 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 Copyright 2011, Ford Global Technologies, LLC Page 5 of 5 Printed copies are uncontrolled
