1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 25 N-STATUS No replacement named C. Mracna, NA 2004 09 14 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.7 & 4 deleted 1987 04 01 Released AI-611420-P33 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Pa
2、ge 1 of 3 ETHYLENE/ACRYLIC (AEM) RUBBER ESP-M2D373-A LOW COMPRESSION SET - OIL SEAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an ethylene acrylic elastomer suitable for high temperature possessing good compression set resistance. 2. APPLICATION This specifi
3、cation was released originally for material used for transmission Orings. 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 SLAB STOCK (ASTM D 3192
4、) 3.4.1 Original Properties Hardness, Durometer A 72 - 78 (ASTM D 2240) Tensile Strength, min 10 MPa (ASTM D 412, Die C) Elongation, min 200% Tear Strength, min 35 kN/m (ASTM D 624, Die B) 3.4.2 Heat Aged (ASTM D 865, 168 h at 150 +/- 2 C) Hardness Change -2 to +5 Tensile Strength Change -10 to +10%
5、 Elongation Change -30 to +15% 3.4.3 Immersion in ASTM #1 Oil (ASTM D 471 168 h at 150 +/- 2 C) Hardness Change -10 to 0 Tensile Strength Change -5 to +20% ENGINEERING MATERIAL SPECIFICATIONESP-M2D373-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 3 Elongati
6、on Change -20 to +10% Volume Change 0 to +15% 3.4.4 Immersion in ASTM #3 Oil (ASTM D 471 168 h at 150 +/- 2C) Hardness Change -35 to 0 Tensile Strength Change -50 to 0% Elongation Change -45 to 0% Volume Change +30 to +60% 3.4.5 Immersion in Three Currently Approved Automatic Transmission Fluids (1)
7、 (ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -25 to -10 Tensile Strength Change -25 to 0% Elongation Change -40 to 0% Volume Change +16 to +26% 3.4.6 Compression Set, max 30% (ASTM D 395, Method B, Solid Button 168 h at 150 +/- 2 C) 3.5 FINISHED PART (ASTM D 1414) 3.5.1 Original Properties Ha
8、rdness 71 - 79 IRHD (ASTM D 1415, micro) Tensile Strength, min 10 MPa Elongation, min 200% Specific Gravity 1.28 - 1.32 (ASTM D 297) 3.5.2 Heat Aged (ASTM D 865, 168 h at 150 +/- 2 C) Hardness Change -2 to +5 IRHD Tensile Strength Change -10 to +10% Elongation Change -30 to +15% ENGINEERING MATERIAL
9、 SPECIFICATIONESP-M2D373-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 3.5.3 Immersion in Three Currently Approved Automatic Transmission Fluids (1) Hardness Change -25 to -10 IRHD Tensile Change -25 to 0% Elongation Change -40 to 0% Volume Change +16 to
10、26% 3.5.4 Compression Set, max 60% (ASTM D 395, Method B, 168 h at 150 +/- 2 C) 3.6 QUALITY CONTROL Upon Engineering approval, the supplier, the affected Materials Engineering Activity and the affected Supplier Quality Assurance Activity shall establish mutually agreed upon quality control tests th
11、at will be used for ongoing product verifications at mutually agreed upon frequencies. The infrared absorption and thermo-gravimetric spectra of the approved material/part shall constitute the reference standard and shall be kept on file. All samples shall produce curves that correspond to the refer
12、ence standard when tested under the same conditions as those specified on the master curve. (1) For information on currently approved automatic transmission fluids contact: Ford Motor Company Transmission and Axle Product and Manufacturing Engineering 36200 Plymouth Road Livonia, Michigan Attn: Supervisor, Materials, Fasteners and Friction Engrg.
