1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 26 N-STATUS No known use. No Replacement Named C. Mracna, NA 2004 08 26 Revised Para 3.0 inserted; para 3.1, 3.5 & 4 deleted 1985 10 04 Released CDP2-627150-C13 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies,
2、LLC Page 1 of 2 EPDM RUBBER, 70 DUROMETER “A“ ESA-M2D353-A HARDNESS - SEAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an ethylene propylene diene terpolymer. 2. APPLICATION This specification was released originally for material used for front wheel brake ca
3、liper piston seal. 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). 3.2 COLOR Black 3.3 MECHANICAL PROPERTIES - SLAB STOCK 3.3.1 Original Hardness, Du
4、rometer A 67 - 75 (ASTM D 2240) Tensile Strength, min 14 MPa (ASTM D 412) Elongation, Ultimate, min 250% (ASTM D 412) Modulus of Elasticity at 3.5 MPa 100% Elongation, min (ASTM D 412) 3.3.2 Dry Heat Aging (ASTM D 573, 70 h at 150 C) Hardness, Durometer A Change 0 to +10 Tensile Strength Change, max
5、 -20% Elongation Change, max -20% 3.3.3 Immersion in ESA-M6C25-A Brake Fluid (ASTM D 471, 70 h at 120 C) Hardness, Durometer A Change -15 to +5 Volume Change 0 to +20% ENGINEERING MATERIAL SPECIFICATIONESA-M2D353-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 o
6、f 2 3.3.4 Compression Set, max 25% (ASTM D 395, Method B, plied, 22 h at 150 C) 3.3.5 Ozone Resistance Must pass (ASTM D 1171, Exposure Method B) 3.3.6 Low Temperature Brittleness Must pass (ASTM D 2137 Method A, Non-brittle after 3 min at -40 C) 3.3.7 Tear Resistance, min 28 kN/m (ASTM D 624, Die B) 3.4 PARTS Specific requirements for the finished parts, if required, shall be as specified on the engineering drawing and/or engineering part specification.
