1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 05 25 N-STATUS No replacement named C. Mracna, NA 2004 10 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1995 02 02 Activated C.C. Gray Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of
2、2 ETHYLENE/PROPYLENE RUBBER (EPDM) WSH-M2D479-A 25% MINIMUM RECYCLED CONTENT NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an ethylene/propylene rubber compound, based on 25% minimum recycled EPDM from post industrial sources. 2. APPLICATION This specification
3、was released originally for material used as an insulation for radiator support. 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
4、 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 cure to molded parts are recommended. The test sheets shall have the f
5、ollowing dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES 3.5.1 Hardness, International 50 +/- 5 (ISO 48/ASTM D 1415) 3.5.2 Hardness, Durometer A 50 +/- 5 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.3 Tensile Strength, min
6、 10.0 MPa (ISO 37/ASTM D 412, Die C) 3.5.4 Elongation at Break, min 300% (Test Method according to para 3.5.3) 3.5.5 Modulus at 100% Elongation, min 1.0 MPa (Test Method according to para 3.5.4) ENGINEERING MATERIAL SPECIFICATIONWSH-M2D479-APrinted copies are uncontrolled Copyright 2010, Ford Global
7、 Technologies, LLC Page 2 of 2 3.5.6 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.7 Compression Set, max 70% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 125 +/- 2 C) 3.5.8 Brittleness Point, max, -40 C (ASTM D 1329/ISO 812, Type B specimen)
8、3.5.9 Tear Strength, min 26 kN/m (ISO 34, Method B, Procedure A) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 70 h at 125 +/- 2 C) 3.6.1 Hardness Change 0 to +10 3.6.2 Tensile Strength Change -20% 3.6.3 Elongation at Break Change, max -40% 3.7 IMMERSION IN BOILING WATER (ISO 1817/ASTM D 471, 70 h at 100 +/- 2 C) 3.7.1 Hardness Change +/- 5 3.7.2 Volume Change +/- 5% 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE EPDM
