1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 11 10 N-STATUS Replaced by WSS-M4D492-B1 2004 09 10 Activated K. D. Bruley Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), COLOR WSS-M4D991-A PIGMENTED,
2、UV STABILIZED, LOW CLTE, FOR MOLDED IN-COLOR APPLICATIONS, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a filled, weatherable thermoplastic molding compound. 2. APPLICATION This specification was released originally for material used for front and rea
3、r skid plates. 3. REQUIREMENTS 3.1 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), shall be met w
4、ith data representing 3 sigma values. 3.2 MOLDING COMPOUND (s) 3.2.1 Melt Flow Rate 35 - 48 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.2.2 Mineral Filler Content 9 - 13% (ISO 2451-1, Method A, mineral filler, 3 h at 650 +/- 25 C, test portion 1 2 g) 3.3 MOLDED TEST SPECIMEN 3.3.1 Preparation of T
5、est 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 minimum x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 355 x 100 x 1.0 +/- 0.1 mm (ISO 379
6、5) ENGINEERING MATERIAL SPECIFICATION WSS-M4D991-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 Test specimen A shall be molded using molding conditions defined in ISO 294. Specimens with shorter dimensions shall be cut from the center of the specimen A.
7、No annealing allowed. 3.3.2 Density 0.94 1.00 g/cm (ISO 1183, Method A) (s) 3.3.3 Tensile Strength at Yield, min 21 MPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 50 mm/minute) (s) 3.3.4 Flexural Modulus, min 1.1 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, u
8、se center section of specimen A, 2 mm/min test speed, 64 mm support span) (s) 3.3.5 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.3.5.1 At 23 +/- 2 C 4 kJ/m2 3.3.5.2 At - 40 +/- 1 C 1.0 kJ/m2 3.3.5.3 At 0 +/- 2 C 2.6 kJ/m2 The test specimens
9、 must be conditioned for a minimum of 6 h 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) 3.3.6 Heat Deflection Temperature, min 52 C (ISO 75-1 & ISO 75-2
10、, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.3.7 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determ
11、ination) 3.3.7.1 Tensile Strength at Yield Change +/- 10% (Test Method per para 3.3.3) 3.3.7.2 Impact Strength, Izod Change +/- 10% (Test Method per para 3.5.5.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATION WSS-M4D991-A Printed copies are uncontrolled Copyright 2006
12、, Ford Global Technologies, LLC Page 3 of 4 3.4 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. 3.5 WEATHERING RESISTANCE After exposure in accordance with 3.5.1, 3.5.2, and 3.5.3, the material
13、 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 of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing an
14、d/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 Weatherometer exposure, pending Florida and Arizona exposure results for final approval. 3.5.1 Xenon
15、 Arc Weatherometer Rating 4 - 5 with at (SAE J1960, 0.55 W/m2 Irradiance, least 75% gloss specimen size: 60 x 60 minimum, retention 2.0 +/- 0.1 mm thick, smooth surface, high gloss injection molded specimen) Exposure Time, minimum 3000 h required Type “S“ Borosilicate Inner and Outer Filters 3.5.2 1
16、2 months Florida 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) 3.5.3 24 months Florida Rating 4 24 months Arizona (SAE J1976, 5 south, direct weathering inland,
17、specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 8.
18、7-5/C (ASTM E 831 TMA, temperature range -30 to 100 C) ENGINEERING MATERIAL SPECIFICATION WSS-M4D991-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 4.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 4.2.1 Molding Shrink
19、age . After 48 h at 23 +/- 2 C 0.70 1.05% 4.2.2 Post Shrinkage (Separate specimens required for each test) . After 30 minutes at 120 C 0.97 - 1.47% 4.3 HEAT DEFLECTION TEMPERATURE, MIN 69 C (ISO 75-1 120 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm defle
20、ction. At 0.45 MPa) 4.4 SHEAR MODULUS AT 23 C 440 - 720 (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. Soak time at each temperatu
21、re 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 the reference standard for materials supplied to this specification and shall be kept on file at the designated material laboratory and be available on request. 4.5 RECYCLING CODE TEO-M11
