1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 20 N-STATUS Replaced by WSS-M4D952-A2/A3 2006 07 20 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1997 08 18 Activated T.A. Honey Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 TH
2、ERMOPLASTIC POLYOLEFIN ELASTOMER (TEO), WSS-M4D952-A1 UNFILLED, REACTOR GRADE MOLDING COMPOUND, EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an unfilled, weatherable molding compound based on reactor grade thermoplastic polyolefin elastomer. 2. APPLIC
3、ATION This specification was released originally for material used for exterior bumper step pad applications. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P
4、1111-A). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 8 - 13 g/ (ISO 1133, 230 C, 2.16 kg) 10 minutes 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless other
5、wise specified all tests shall be carried out on injection molded one-end gated test specimens. 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 t
6、est specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 0.87 - 0.93 (ISO 1183, Method A) g/cm3 3.5.3 Hardness, Durometer D 50 - 63 (ISO 868, 15 s dwell) ENGINEERING MATERIAL SPECIFICATION WSS-M4D952-A1 Printed copies are uncontrolled Copyrig
7、ht 2006, Ford Global Technologies, LLC Page 2 of 5 (s) 3.5.4 Tensile Strength at Yield, min 14 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) (s) 3.5.4.1 Elongation at Yield, min 5% (Test Method according to para 3.5.4) (s) 3.5.5 Flexural Modulus, min 550 MPa (I
8、SO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/minute test speed, 64 mm support span) 3.5.6 Shear Modulus at 23 C 300 - 470 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approximately 60 x 10 x 4.0 +/- 0.2 mm cut from the center of spe
9、cimen A.12.2. Specimen length between clamps 35 - 40 mm. Soak time at each temperature interval - 3 minutes min) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C min intervals. The plotted curve must be within tolerance range granted on
10、 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. (s) 3.5.7 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen
11、, 10 specimens for each test) 3.5.7.1 At 23 +/- 2 C 20 kJ/m2 3.5.7.2 At -40 +/- 2 C 3 kJ/m2 3.5.7.3 At 0 +/- 2 C 5 kJ/m2 The test specimens must be conditioned for min of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.8
12、 Heat Deflection Temperature, min 40 C (ISO 75-1 and ISO 75-2, 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) 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged property values
13、shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATION WSS-M4D952-A1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.5.9.1 Tensile Strength at Yield +/- 15% Change (Test Method per para 3.5.4) 3.5.9.2 Impac
14、t Strength, Izod Change No break (Test Method per para 3.5.7.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 60 mm/minute The specimen size required for material approval is 355 x 100 x 1.25 +/- 0.1 mm with a smooth surface. 3.7 WEATHERING RESISTANCE
15、 After exposure in accordance with para 3.7.1, 3.7.2, and 3.7.3, 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 of gloss or chalking wi
16、ll 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 Weatherometer exposure,
17、 pending Florida and Arizona exposure results for final approval. 3.7.1 Xenon Arc Weatherometer Rating 4 - 5 (SAE J1960, 2500 kJ/m2 exposure min, specimen size: 150 x 100 mm min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.2 12 months Florida Rating 4 - 5 12 months Arizona (NAAO only)
18、(SAE J1976, 5 south, direct weathering inland, specimen size: 150 X 100 mm, min, 3.2 +/- 0.2 mm thick, molded in smooth polished mold) 3.7.3 24 months Florida Rating 4 - 5 24 months Arizona (NAAO only) (SAE J1976, 5 south, direct weathering inland, specimen size: 150 x 100 mm, min, 3.2 +/- 0.2 mm th
19、ick, molded in smooth polished mold) ENGINEERING MATERIAL SPECIFICATION WSS-M4D952-A1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements
20、of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10-5/ C (ASTM E 831 or TMA, temperature range -30 to +100 C) 5.2 MOLD SHRINKAGE (ISO 2577, approximately 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.4% 5.2.2 Post Shrinka
21、ge (Separate specimens required for each test) . After 48 h at 80 C 1.7% . After 30 minutes at 120 C 1.8% 5.3 HEAT DEFLECTION TEMPERATURE 50 C (ISO 75-1 and ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, flatwise, 0.34 +/- 0.1 mm deflection. At 0.45 MPa) 5.4 MODULUS OF
22、 ELASTICITY 0.40 GPa (ISO 527-1 and ISO 527-2, 150 min x 10 x 4.0 +/- 0.2 mm specimen, test speed: 1 mm/minute) 5.5 IMPACT STRENGTH, CHARPY (ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 5.5.1 At 23 +/- 2 C 60 kJ/m2 5.5.2 At -40 +/- 1 C
23、5 kJ/m2 5.5.3 At 0 +/- 2 C 12 kJ/m2 The test specimen must be conditioned for min 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 s. 5.6 RECYCLING CODE PP+EDPM ENGINEERING MATERIAL SPECIFICATION WSS-M4D952-A1 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
