1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 08 14 N-STATUS Replaced by WSS-M9P9-A K. Mueller 2004 09 21 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.9 & 4 deleted 1992 10 01 Released C10247472 B. Hennessey Printed copies are uncontrolled Copyright 2007, Ford Global Technologies
2、, LLC Page 1 of 4 WEATHERSTRIP, NATURAL RUBBER (NR), ETHYLENE/PROPYLENE WSD-M2D405-A5 RUBBER (EPDM) LAMINATED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a non-blooming natural rubber (NR) weatherstrip with a thin veneer of ethylene/propylene rubber (EPDM) ap
3、plied to the exterior visible surface as shown on the engineering drawing. 2. APPLICATION This specification was released originally to improve the sealability of the weatherstrip to body and glass in non-direct glazed, fixed glass systems while maintaining the excellent weathering characteristics o
4、f EPDM rubber. In addition to the following requirements all parts made from this material must conform to the performance requirements of WSD-M9P8-A. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requir
5、ements 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 test sheets manufactured from the same material and with equivalent
6、cure to molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES NR EPDM 3.5.1 Hardness, International, IRHD 55 - 65 55 - 65 (ISO 48/ASTM D 1415) 3.5.2 Tensile Strength, MPa, min 10.0 8.0 (ISO 37/ASTM D 412, Die C)
7、ENGINEERING MATERIAL SPECIFICATIONWSD-M2D405-A5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 4 NR EPDM 3.5.3 Elongation at Break, %, min 350 300 (Test Method according to para 3.5.2) 3.5.4 Modulus at 100% Elongation, MPa 1.5 - 4.5 1.5 - 4.5 (Test Method acc
8、ording to para 3.5.2) 3.5.5 Tear Strength, kN/m, min 20.0 18.0 (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.5.6 Rebound Resilience, %, min 30 25 (ISO 4662) 3.5.7 Compression Set, %, max 25 35 (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 70 +/- 2 C) 3.5
9、.8 Brittleness Point, C, max -40 -40 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.5.9 Ozone Resistance, max Rating 0 Rating 0 (FLTM BP 101-01, Procedure A) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/-50 air changes/h, 168 h at 70 +/- 2 C) 3.6.1 Hardness Change, max +15 +15 3.6.2 Tensile Strengt
10、h Change, %, max -35 -20 3.6.3 Elongation Change, %, max -70 -60 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, 168 h at 100 +/- 2 C) 3.7.1 Hardness Change, max +15 +10 3.7.2 Tensile Strength Change
11、, %, max -35 -20 3.7.3 Elongation Change, %, max -70 -60 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSD-M2D405-A5 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 4 3.8 FINISHED PART
12、 REQUIREMENTS 3.8.1 The finished part must conform to performance specification WSD-M9P8-A (Interior and Exterior requirements). 3.8.2 Adhesion: EPDM to Natural Rubber 3.8.2.1 Original 1.0 N/mm 3.8.2.2 Aged according to para 3.6 0.7 N/mm 3.8.2.3 Aged according to WSD-M9P8-A, 0.7 N/mm para 3.7.1.1 3.
13、8.2.4 Aged according to WSD-M9P8-A, 0.7 N/mm para 3.7.2 3.8.2.5 Aged according to WSD-M9P8-A, 0.7 N/mm para 3.7.3 3.8.2.6 Aged according to WSD-M9P8-A, 0.7 N/mm para 3.7.8 (Exclude water and acid spotting tests) 3.8.2.7 Aged according to WSD-M9P8-A, 0.7 N/mm para 3.9.1.1 Test Method: ASTM D 413, Mac
14、hine Method, Type A 180 peel, strip specimens. Test speed 50 mm/minute. After ageing, the test specimen shall be prepared by making two parallel cuts, using a sharp scalpel blade, through the EPDM veneer into the underlying natural rubber. The cuts are made along the “styling grooves“ for the whole
15、length of the test specimen. If no such grooves are present, the cuts should be made 10 mm apart. The EPDM is separated by hand between the two cuts until the freed end can be clamped in the grips of the testing machine as described in ASTM D 413. ENGINEERING MATERIAL SPECIFICATIONWSD-M2D405-A5 Prin
16、ted copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved service fluids and other
17、materials required for use in this specification contact: Materials Laboratory 13/100 Body & Chassis Engineering Research and Engineering Centre Body Eng. Materials Laboratory Ford Motor Company Ltd Ford Motor Company Laindon, Basildon P.O. Box 2053 Essex SS15 6EE, England B&CE-, Room 1289 Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
