1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2007 10 11 Revised Updated format, no technical change K. Mueller 2007 01 23 Revised Para 4.3 K. Mueller/M. Masserant 2005 10 31 Activated Box Top Moldings Application K. Mueller/M. Masserant Printed copies are uncontrolled Copyright 2007, Fo
2、rd Global Technologies, LLC Page 1 of 6 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), WSS-M4D713-A8 5% WOLLASTONITE FILLED, COLOR PIGMENTED, UV STABILIZED, EXTERIOR 1. SCOPE The material defined by this specification is a wollastonite filled, high impact, rigid thermoplastic polyolefin elastomer (TPO) i
3、njection molding compound. This material is UV stabilized and color pigmented for exterior use. 2. APPLICATION This specification was released originally for material used for exterior F150 truck box top moldings. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers
4、and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values using latest ISO test methods. 3.1.2 This specification was deve
5、loped using virgin material properties. The use of regrind is permitted, for economic/environmental reasons, with compliance to the following conditions: Regrind source is factory regrind from the same material specification processed under closed loop conditions. Written approval from Ford Material
6、s Engineering must be requested on a part-by-part basis. All requests for approval must be accompanied with the following: - Engineering drawing defining the maximum allowable regrind content as a significant characteristic. - Complete DV and PV test data for parts manufactured with the maximum allo
7、wable regrind content as specified on the engineering drawing. (Referenced in Engineering CAD 150 x 10 x 4 mm specimen A). Test speed shall be 50 mm/minute. Provide a curve of tensile stress versus strain using one specimen per lot at each of the following temperatures: -40 C, 23 C and 80 C. For duc
8、tile materials, the curve shall cover strain through yield point. (s) 3.3.6 Impact Strength, Izod, notched (Initial Qualification), min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 3.3.6.1 At 23 +/- 2 C 20 kJ/m23.3.6.2 At -40 +/- 1 C 2.
9、5 kJ/m23.3.6.3 At 0 +/- 2 C 9.0 kJ/m2The 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. (s) 3.3.7 Fl
10、exural Modulus (Initial Qualification), min 850 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D713-A8 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 6 (s) 3.3.8 Tensile Mod
11、ulus, min 840 MPa (ISO 527-1 5 = severe scratch line) 3.5 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D713-A8 Printed copie
12、s are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 6 3.6 WEATHERING RESISTANCE 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 Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition,
13、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 and/or polishing with Ford car polish (auto wax) after the outdoor exposure, at permission of the affected Product Development M
14、aterials Activity. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida and Arizona exposure results for final approval. 3.6.1 Xenon Arc Weatherometer Rating 4 - 5 (SAE J1960 modified Type “S“ with at least borosilicate inner and outer filters, 75% gloss 0.5
15、5 W/m2 radiant exposure retention 3000 h exposure, specimen size: 60 x 60 x 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen B) 3.6.2 12 months Florida 12 months Arizona Rating 4 - 5 (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 m
16、m thick, smooth surface, low gloss injection molded specimen B) 3.6.3 24 months Florida 24 months Arizona Rating 4 (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 B) 4. GENERAL INFORMATION The in
17、formation given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA, temperature range -30 C to 30 C) 4.1.1 Flow Direction 6.8-5/C 4.1.2 Cross-Flow Direction 16.4-5/C ENGINEERING MATERIAL SP
18、ECIFICATIONWSS-M4D713-A8 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 6 4.2 MOLD SHRINKAGE (ISO 294-3 and 294-4, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen B) 4.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C Flow Direction 0.8% Cross Flow Directio
19、n 0.8% 4.3 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES (ISO 1043 latest) PP+EPDM-MF5 ENGINEERING MATERIAL SPECIFICATIONWSS-M4D713-A8 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 6 of 6 TYPICAL TENSILE STRESS VS TENSILE STRAIN ISO Tensile (50 mm/min Test Speed)
