1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 08 29 Revised Combined the A and A2 version and added the A3 version; the specification was completely revised, please remove the A and A2 version from the book L. Hess 2000 06 09 Released K. D Bruley Printed copies are uncontrolled Copyr
2、ight 2003, Ford Global Technologies, Inc. Page 1 of 4 THERMOPLASTIC ELASTOMER, STYRENE POLYOLEFIN WSS-M2D504-A BLOCK COPOLYMER (TES), 57 DUROMETER A HARDNESS, INTERIOR OR EXTERIOR WEATHERABLE THERMOPLASTIC ELASTOMER, STYRENE POLYOLEFIN WSS-M2D504-A2 BLOCK COPOLYMER (TES), 49 DUROMETER A HARDNESS, IN
3、TERIOR OR EXTERIOR WEATHERABLE THERMOPLASTIC ELASTOMER, STYRENE POLYOLEFIN WSS-M2D504-A3 BLOCK COPOLYMER (TES), 35 DUROMETER A HARDNESS, INTERIOR OR EXTERIOR WEATHERABLE 1. SCOPE The material defined by these specifications is a black U.V. stabilized thermoplastic styrene-ethylene/butylene-styrene c
4、opolymer elastomer. The material possesses a good exterior weathering capability and can be processed by conventional thermoplastic molding techniques such as injection and/or extrusion molding. 2. APPLICATION These specifications were released originally for material used on gap hiders, and shift b
5、oots. 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). 3.2 MATERIAL TESTING 3.2.1 Preparation of Test Specimens Whenever possible, all test specimens
6、shall be die-cut from the finished parts. When not feasible, specimens cut from molded test sheets manufactured from the same material and with equivalent cure to the molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 02 mm ENGINEERING MATE
7、RIAL SPECIFICATIONWSS-M2D504-A/A3Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 4 A A2 A3 3.3 ORIGINAL PROPERTIES 3.3.1 Density, +/- 0.05 g/cm31.2 1.2 1.05 (ISO 1183, Method A) 3.3.2 Hardness, Durometer A 52-62 43 53 30 - 40 (ISO 868, instantaneous, 6.0 mm p
8、lied-up specimen) 3.3.3 Tensile Strength, MPa, min 3.6 3.5 3.5 (ISO 37, test speed: 508 mm/min) 3.3.3.1 Elongation at Break, 180 390 500 %, min (Test method according to para 3.3.3) 3.3.3.2 Modulus at 100% 1.5 1.4 0.5 Elongation, MPa, min (Test method according to para 3.3.3) 3.3.4 Tear Strength, mi
9、n, kN/m (ISO 34, Method B Procedure A) 3.3.4.1 Parallel to Flow 18 19 9 3.3.4.2 Perpendicular to Flow 19 16 6 3.3.5 Brittleness Point, max, C - 60 - 53 - 58 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.3.6 Ozone Resistance, max Rating 0 0 0 (FLTM BP 101-01, Procedure A) 3.3.7 Compression Set,
10、 %, max 60 94 70 (ISO 815, plied-up specimens, 22 h at 70 +/- 2 C) 3.3.8 Migration Staining Rating 4 (FLTM BN 103-01, ISO 105-A02/ AATCC Ev-Proc. 1) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D504-A/A3Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 3 of 4 A A2 A3 3.4
11、 HEAT AGING (ISO 188, 150 +/- 50 air change/h, 1000 h at 125 +/- 2 C) 3.4.1 Hardness Change, max 5 8 5 3.4.2 Tensile Strength Change, max 50% 3.4.3 Elongation Change, max 50% 3.4.4 Visual Evaluation No surface tackiness or cracks when folded flat against self. 3.5 FOGGING, min 70 (SAE J1756, 3 h at
12、100 C heating, 21 C cooling plate, post conditioning 1 h) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max, mm/minute 100 3.7 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 pr
13、ocedure 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 and/or polishing with Ford car polish (auto wax) after the outdoor exposure, by permission
14、of the affected Product Development Materials Activity. All initial approval will be based on the preliminary Weatherometer exposure, pending Florida and Arizona exposure results for final approval. 3.7.1 Xenon Arc Weatherometer Rating 4 (SAE J1960, 2500 kJ/m2exposure minimum, specimen size: 60 x 60
15、 minimum x 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D504-A/A3Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 4 of 4 3.7.2 12 months Florida Rating 4 12 months Arizona (SAE J1976, 5south, dir
16、ect weathering inland, specimen size: 60 x 60 minimum x 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.7.3 24 months Florida Rating 3 - 4 24 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum x 2.0 +/- 0.1 mm thick, smooth surfa
17、ce, low gloss injection molded specimen) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 23E-5/C 23E-5/C (ASTM E 831 TMA, temperature range -30 30 C) A A2
18、A3 4.2 MOLD SHRINKAGE (ISO 2577, 150 x 100 x 2.0 +/- 0.2 mm injection molded specimen) 4.2.1 Molding Shrinkage After 48 h 23 +/- 2 C, mm/mm Length 0.018 0.0188 0.018 Width 0.008 0.0089 0.018 4.2.2 Post Shrinkage After 48 h 110 +/- 2 C, mm/mm Length 0.016 0.0131 .003 Width 0.004 0.0131 .0005 4.3 RECYCLING CODE TES TEO
