1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 11 Revised See Summary of Revisions J. Souza, SA 2004 12 16 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 & 4 1996 06 17 Activated M. Myers Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1
2、of 5 THERMOPLASTIC ELASTOMER (TEO) POLYOLEFIN, WSS-M2D378-B1 EPDM RUBBER MODIFIED EXTERIOR WEATHERABLE 60 DUROMETER A HARDNESS THERMOPLASTIC ELASTOMER (TEO) POLYOLEFIN, WSS-M2D379-B1 EPDM RUBBER MODIFIED EXTERIOR WEATHERABLE 68 DUROMETER A HARDNESS THERMOPLASTIC ELASTOMER (TEO) POLYOLEFIN, WSS-M2D38
3、0-B1 EPDM RUBBER MODIFIED EXTERIOR WEATHERABLE 73 DUROMETER A HARDNESS THERMOPLASTIC ELASTOMER (TEO) POLYOLEFIN, WSS-M2D381-B1 EPDM RUBBER MODIFIED EXTERIOR WEATHERABLE 84 DUROMETER A HARDNESS THERMOPLASTIC ELASTOMER (TEO) POLYOLEFIN, WSS-M2D382-B1 EPDM RUBBER MODIFIED EXTERIOR WEATHERABLE 90 DUROME
4、TER A HARDNESS 1. SCOPE The materials defined by these specifications are black U.V. stabilized thermoplastic elastomers containing fully cured EPDM elastomer particles. These materials possess good exterior weathering capability and have Durometer A hardness ranging from 60 to 90. 2. APPLICATION Th
5、ese specifications were released originally for material used for exterior gimps, gaskets and gap hiders for such components as lighting, door handles, mirrors, cowl vent grilles and leaf screens. The materials can be processed by conventional thermoplastics molding techniques such as injection mold
6、ing, extrusion and blow-molding. 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-M99P1111-A). 3.4 MATERIAL TESTING 3.4.1 Preparation of Test Specimens Whenever po
7、ssible, all test specimens 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 molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/-
8、 0.2 mm ENGINEERING MATERIAL SPECIFICATIONWSS-M2D378-B1 WSS-M2D379-B1 WSS-M2D380-B1 WSS-M2D381-B1 WSS-M2D382-B1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 3.5 ORIGINAL PROPERTIES 378-B1 379-B1 380-B1 381-B1 382-B1 3.5.1 Density, +/- 0.05 g/cm30.97 0.98 0
9、.98 0.98 0.96 (ISO 1183, Method A /ASTM D 792, Method A1) 3.5.2 Hardness, International 72-82 73-83 80-90 88-98 93-103 (ISO 48/ASTM D 1415) 3.5.3 Hardness, Durometer A 56-66 63-73 68-78 79-89 85-95 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen) 3.5.4 Tensile Strength, MPa, 4.5 6.0 7.0 8.5 1
10、2.5 min (ISO 37/ASTM D 412, Die C) 3.5.5 Elongation at Break, 300 320 350 400 420 %, min (Test Method according to para 3.5.4) 3.5.6 Modulus at 100% 1.7 2.4 2.8 4.0 5.8 Elongation, MPa, min (Test Method according to para 3.5.4) 3.5.7 Tear Strength, kN/m, min (ISO 34, Method B, Procedure (a)/ASTM D 6
11、24, Die C) 3.5.7.1 Parallel 15.0 19.0 23.0 26.0 40.0 to Flow 3.5.7.2 Perpendicular 13.0 17.0 23.0 30.0 50.0 to Flow 3.5.8 Brittleness Point, -60 -55 -50 -50 -50 C, max (ISO 812, Type B specimen/ASTM D 2137, Method A) 3.5.9 Ozone Resistance, 0 0 0 0 0 Rating, max (FLTM BP 101-01, Procedure A) ENGINEE
12、RING MATERIAL SPECIFICATIONWSS-M2D378-B1 WSS-M2D379-B1 WSS-M2D380-B1 WSS-M2D381-B1 WSS-M2D382-B1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 378-B1 379-B1 380-B1 381-B1 382-B1 3.5.10 Compression Set, %, max (ISO 815/ASTM D 395, Method B, except 25% compre
13、ssion, plied -up specimens) 3.5.10.1 22 h at 70 40 40 45 45 50 +/- 1C 3.5.10.2 70 h at 125 65 65 65 70 85 +/- 1C 3.6 HEAT AGING (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 125 +/- 2 C) 3.6.1 Hardness Change, max 5 5 5 5 5 3.6.2 Tensile Strength 25 30 30 30 20 Change, %, max 3.6.3 Elonga
14、tion Change, max 30 30 30 30 35 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 FOGGING 70 70 70 70 70 (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) 3.8 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen s
15、ize required for material approval is 355 x 100 x 1.5 +/- 0.1 mm with a smooth surface. 3.9 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
16、addition, there shall be no cracking, crazing or other deterioration. ENGINEERING MATERIAL SPECIFICATIONWSS-M2D378-B1 WSS-M2D379-B1 WSS-M2D380-B1 WSS-M2D381-B1 WSS-M2D382-B1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 A slight loss of gloss or chalking wi
17、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 approval will be based on the preliminary Weatherometer exposure,
18、pending Florida and Arizona exposure results for final approval. 3.9.1 Xenon Arc Weatherometer Rating 4 (SAE J1960, 1250 kJ/m2 exposure minimum, specimen size: 60 x 60 minimum, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.9.2 12 months Florida Rating 4 12 months Arizo
19、na (SAE J1976, 5 deg south, direct weathering inland, specimen size: 60 x 60 minimum 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.9.3 24 months Florida Rating 3 - 4 24 months Arizona (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum 2.0 +/-
20、 0.1 mm thick, smooth surface, low gloss injection molded specimen) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 For information on currently approved engine coolants for use in this specifica
21、tion contact: Materials Laboratory 15/GM-D01-D Fluids Materials Section Research and Engineering Centre Coolants/Greases Ford Motor Company Ltd. Engine Engineering Laindon, Basildon P.O. Box 2053 Essex SS15 6EE, England 21500 Oakwood Boulevard Dearborn, MI 48121, USA Materials Engineering Product En
22、gineering Office Ford Motor Co. of Australia Ltd. Princes Highway, Norlane Victoria 3214, Australia 5.2 RECYCLING CODE TPV ENGINEERING MATERIAL SPECIFICATIONWSS-M2D378-B1 WSS-M2D379-B1 WSS-M2D380-B1 WSS-M2D381-B1 WSS-M2D382-B1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
23、LLC Page 5 of 5 378-B1 379-B1 380-B1 381-B1 382-B1 5.3 COEFFICIENT OF LINEAR THERMAL 8.2 8.2 8.2 8.2 8.2 EXPANSION, -4/ C (ASTM D 696) 5.4 MOULD SHRINKAGE (ISO 2577, 150 x 100 x 2.0 +/- 0.2 mm injection molded specimen) 5.4.1 Molding Shrinkage After 48 h at 23 +/- 2 C, mm/mm . Length 0.032 0.027 0.0
24、24 0.024 0.023 . Width 0.025 0.023 0.022 0.022 0.022 5.4.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 110 +/- 2 C . Length 0.008 0.008 0.008 0.008 0.008 . Width 0.009 0.008 0.007 0.007 0.007 6. SUMMARY OF REVISIONS 2010 06 11 WSS-M2D379-B1- Revised Brittleness point from -60 to -55 due to no exceptions Allowed in the remarks field WSS-M2D380-B1- Revised Brittleness point from -55 to -50 and Compression Set at 22 h at 70C from 40 to 45 due to no exceptions Allowed in the Remarks field
