1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2015 05 08 Revised See Summary of Revisions H. Santos, FSA 2013 08 23 Revised See Summary of Revisions L. Shen, APA 2009 01 06 Revised Removed N-STATUS; Part of Cowl Top Grille Strategy K. Mueller, FNA Controlled document at www.MATS C
2、opyright 2015, Ford Global Technologies, LLC Page 1 of 4 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSS-M4D954-A 30% MINERAL FILLED, COLOR PIGMENTED, MOLDING COMPOUND, EXTERIOR 1. SCOPE The material defined by this specification is a 30% mineral filled rigid thermoplastic polyolefin elastomer (TEO) in
3、jection molding compound, color pigmented, with added UV stabilization for exterior use. 2. APPLICATION This specification was released originally for material used for exterior parts which are exposed to sunlight such as cowl vent grilles. 3. REQUIREMENTS Material specification requirements are to
4、be used for initial qualification of materials. 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). 3.1.1 All requirements of this specification, identified by symbol (s
5、), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate Report value (ISO 1133, 240 C, 2.16 kg) 3.4.2 Mineral Filler Content 27 - 34% (ISO 3451-1, Method A, talc filler, 30 minutes at 800 +/- 50 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Prepara
6、tion of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATION WSS-M4D954-A Copyright 2015, Ford Global Technologies, LLC Page 2 of 4 The following dimensions are required: A. 150 minimum x 10 x 4.
7、0 +/- 0.2 mm (ISO 3167, Type 1A) B. 120 x 10 x 4.0 +/- 0.2 mm (ISO/DIS 294-3) Test specimen A shall be molded using molding conditions defined in ISO 294-1. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3.5.2 Density 1.11 - 1.16 g/cm3 (ISO 11
8、83, Method A) 3.5.3 Hardness, Durometer D 63 - 73 (ISO 868, 15 s dwell) 3.5.4 Tensile Strength at Yield 19 MPa min (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 50 mm/minute) 3.5.5 Flexural Modulus 2 GPa min (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test
9、 speed, 64 mm support span) 3.5.6 Shear Modulus at 23 C 1085 - 1815 MPa (ASTM D 5279, 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 a
10、t each temperature interval - 3 minutes minimum) Additionally, a shear modulus versus temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range granted on the original material approval and it shall constitute t
11、he reference standard for materials supplied to this specification and shall be kept on file at the designated material laboratory and be available on request. 3.5.7 Impact Strength, Izod (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C 7 kJ/m2 min 3.
12、5.7.2 At -40 +/- 1 C 2 kJ/m2 min The test specimen must be conditioned for minimum of 6 hours at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. ENGINEERING MATE
13、RIAL SPECIFICATION WSS-M4D954-A Copyright 2015, Ford Global Technologies, LLC Page 3 of 4 3.5.8 Heat Deflection Temperature 67 C min (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 ai
14、r changes/h, 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Yield Change +/- 25% 3.5.9.2 Impact Strength, Izod Change +/- 50% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6
15、 WEATHERING RESISTANCE After exposure in accordance with para 3.8.1, 3.8.2, and 3.8.3, the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss o
16、f gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing and/or polishing with Ford car polish (auto wax) after the outdoor exposure, at permission of the affected Product Development Materials Activity. All initial approvals will be based on the preliminary W
17、eatherometer exposure, pending Florida and Arizona exposure results for final approval. 3.6.1 Xenon Arc Weatherometer Rating 4 - 5 (SAE J1960, 2500 kJ/m2 exposure minimum, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.6.2 12 months Flori
18、da Rating 4 - 5 12 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.6.3 24 months Florida Rating 4 24 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size:
19、 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) ENGINEERING MATERIAL SPECIFICATION WSS-M4D954-A Copyright 2015, Ford Global Technologies, LLC Page 4 of 4 3.7 PAINTABLILITY (Applicable only if required) Painted substrate must comply with all requirements o
20、f paint performance specification WSS-M2P181-A. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 COEFFICIENT OF LINEAR THERMAL
21、EXPANSION 3.7-5/C (ASTM E 831 TMA, temperature range -30 to +30 C) 4.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 4.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.2 - 0.4% 4.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.2 - 0.5% 4.3 RECYCLING CODE PP+EPDM-M30 5. SUMMARY OF REVISIONS 2015 05 08 Revised Melt Flow Rate from 8-12 g/10 minutes to Report Value 2013 08 23 Revised Tensile Strength from 24MPa to 19MPa
