1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2016 08 31 N Status No replacement or usage L. Sinclair, NA 2004 10 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 Numbering corrected 5.3 1996 03 13 Activated J. Mitchell Copyright 2016, Ford Global Technologies, LLC Page
2、1 of 3 THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSS-M2D476-A3 50% MINIMUM RECYCLED CONTENT, HARDNESS 60 DUROMETER A THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSS-M2D476-A4 50% MINIMUM RECYCLED CONTENT, HARDNESS 70 DUROMETER A THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSS-M2D476-A5 50% MINIMUM RECYCLED
3、 CONTENT, HARDNESS 80 DUROMETER A THERMOPLASTIC POLYOLEFIN ELASTOMER (TEO) WSS-M2D476-A6 50% MINIMUM RECYCLED CONTENT, HARDNESS 90 DUROMETER A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are a thermoplastic polyolefin molding compound, modified with 50% recyc
4、led rubber from used tires. 2. APPLICATION These specifications were released originally for materials used in various applications such as body plugs, grommets, bumpers, as a suitable replacement for virgin rubber. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material supplier
5、s 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 possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens cut from molded tes
6、t sheets manufactured from the same material and with equivalent cure to molded parts are recommended. The test sheets shall have the following dimensions: 114.3 x 81.0 mm, min x 3.2 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES 3.5.1 Density 1.0 +/- 0.02 g/cm3 (ISO 1183, Method A/ASTM D 297) ENGINEERING MATER
7、IAL SPECIFICATION WSS-M2D476-A3/A4/A5/A6 Copyright 2016, Ford Global Technologies, LLC Page 2 of 3 3.5.2 Hardness, Durometer A See Table 1 (ISO 868/ASTM D 2240, 15 s delay) 3.5.3 Tensile Strength, MPa, min See Table 1 (ISO 37/ASTM D 412, Die C) 3.5.4 Elongation at Break, % min See Table 1 (Test Meth
8、od according to para 3.5.3) 3.5.5 Modulus at 100% Elongation See Table 1 (Test Method according to para 3.5.3) 3.5.6 Tear Strength, KN/m, min See Table 1 (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.5.7 Cold Flexibility at -40 +/- 1 C No cracking (FLTM BN 102-01, except 25 x 98 mm sample)
9、3.5.8 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.9 Compression Set, %, max See Table 1 (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 70 +/- 2 C) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 70 +/- 2 C) 3.6.1 Hardness
10、 Change +/- 3 3.6.2 Tensile Strength Change, max +/- 15% 3.6.3 Elongation Change, max +/- 25% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 70 +/- 2 C) 3.7.1 Hardness Change +/- 3 3.7.2 T
11、ensile Strength Change, max +/- 25 3.7.3 Elongation Change, max +/- 30 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATION WSS-M2D476-A3/A4/A5/A6 Copyright 2016, Ford Global Technologies, LLC Page 3 of 3 3.8 FLAMMABILITY 100 mm/m
12、inute (ISO 3795/SAE J369) 3.9 Table 1 PARAGRAPH A3 A4 A5 A6 3.5.2 60 +/- 5 70 +/- 5 80 +/- 5 90 +/- 5 3.5.3 2.4 3.3 3.8 5.5 3.5.4 200 200 175 150 3.5.5 1.7 2.5 3.0 5.0 3.5.6 18 22 26 40 3.5.9 65 70 75 80 5. GENERAL INFORMATION The information given below is provided for clarification and assistance
13、in meeting the requirements of these specifications. 5.1 For information on currently approved service fluids and other materials required for use in these specifications contact: Materials Laboratory 15/GM-D01-D Commercial Truck Operations Research and Engineering Center Materials Engineering Ford Motor Company Ltd Ford Motor Company Laindon, Basildon P.O. Box 2053 Essex SS14 6EE, England Room 1015, Building #1 Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia 5.2 RECYCLING CODE PP+SBR
