1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 10 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1993 11 16 Released NEO1E10127076108 E.J. Duda Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 2 ETHYLENE/PROPYLENE RUBBER (EPDM) STAN
2、DARD PART O-RING WSE-M2D475-A1 1. SCOPE The material defined by this specification is a ethylene/propylene rubber compound with good resistance to heat, ozone, weathering, water and coolant. 2. APPLICATION This specification was released originally for material used as a standard part O-ring. This m
3、aterial has excellent resistance to ozone, water, engine coolants and compression set. 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 T
4、ESTING 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
5、 the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES 3.5.1 Hardness, International 70 +/- 5 (ISO 48/ASTM D 1415) 3.5.2 Hardness, Durometer A 70 +/- 5 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.3 Tensile Strengt
6、h, min 12.0 MPa (ISO 37/ASTM D 412, Die C) 3.5.4 Elongation at Break, min 230% (Test Method according to para 3.5.4) 3.5.5 Modulus at 100% Elongation 5.0 - 7.5 MPa (Test Method according to para 3.5.4) 3.5.6 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) ENGINEERING MATERIAL SPECIFICAT
7、IONWSE-M2D475-A1Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 3.5.7 Compression Set, max 20% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 125 +/- 2 C) 3.5.8 Low Temperature Flexibility Test, Trio, max -38 C (ASTM D 132
8、9) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 125 +/- 2 C) 3.6.1 Hardness Change 0 to +10 3.6.2 Tensile Strength Change +/- 10% 3.6.3 Elongation at Break Change, max -30% 3.6.4 Modulus at 100% Elongation 6.5 - 12 MPa 3.7 IMMERSION IN CURRENTLY RELEASED PRODUCTION ENGINE C
9、OOLANT (FLTM BO 130-01, 1000 h at 125 +/- 2 C, see para 5.1) 3.7.1 Hardness Change +/- 6 3.7.2 Tensile Strength Change, max -10% 3.7.3 Elongation at Break Change, max -12% 3.7.4 Volume Change 0 to +5% 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in
10、meeting the requirements of this specification. 5.1 For information on currently approved service fluids and other materials required for use in this specification 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 Blvd. 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 EPDM
