1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 14 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.12 & 4 deleted 1987 11 10 Released IR-162050-P10 T. P. KochPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 4 ETHYLENE/ACRYLIC (AEM) RUBBER, LOW
2、 WSP-M2D377-A COMPRESSION SET - GROMMET 1. SCOPE The material defined by this specification is an ethylene acrylic (AEM) elastomer suitable for high temperature use, possessing good compression set resistance. 2. APPLICATION This specification was released originally for material used for static sea
3、ls (grommets) on parts adjacent to automatic transmission. 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 - ORIGINAL PROPERTIES
4、 3.4.1 Preparation of Test Specimens All test specimens shall be die-cut from molded test sheets manufactured from the same material and with equivalent cure to molded parts. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2 Density 1.15-1.19 g/cm3(ASTM D
5、297) 3.4.3 Hardness, International 46 - 54 (ASTM D 1415) 3.4.4 Hardness, Durometer A 47 - 53 (ASTM D 2240, instantaneous, plied-up specimen) 3.4.5 Tensile Strength, min 12 MPa (ASTM D 412, Die B) 3.4.6 Elongation at Break, min 400% (Test Method according to para 3.4.5) 3.4.7 Modulus at 100% Elongati
6、on, min 1.5 MPa (Test Method according to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSP-M2D377-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 4 3.4.8 Tear Strength, min 27 kN/m (ASTM D 624, Die B) 3.4.9 Compression Set, max 30% (ASTM D 395, Method B, 168
7、 h at 150 +/- 2 C, solid buttons) 3.5 HEAT AGED (ASTM D 573, 168 h at 150 +/- 2 C) Hardness Change -2 to +5 Tensile Strength Change -10 to +10% Elongation Change -30 to +15% Modulus at 100% Elongation Change, max -15% 3.6 HEAT AGED (ASTM D 573, 1,000 h at 150 +/- 2 C) Hardness Change 0 to +10 Tensil
8、e Strength Change -10 to +10% Elongation Change -30 to 0% Modulus at 100% Elongation Change, max +35% 3.7 IMMERSION IN ASTM OIL NO.1 (ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -10 to 0 Tensile Strength Change -5 to +20% Elongation Change -20 to +10% Volume Change 0 to +15% 3.8 IMMERSION IN A
9、STM OIL NO.3 (ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -35 to 0 Tensile Strength Change -70 to 0% Elongation Change -55 to 0% Volume Change +40 to +80% ENGINEERING MATERIAL SPECIFICATIONWSP-M2D377-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.9
10、 IMMERSION IN THREE CURRENTLY APPROVED AUTOMATIC TRANSMISSION FLUIDS (ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) Hardness Change -25 to -10 Tensile Strength Change -50 to 0% Elongation Change -50 to 0% Volume Change +23 to +33% 3.10 IMMERSION IN THREE CURRENTLY APPROVED AUTOMATIC TRANSMISSION F
11、LUIDS (ASTM D 471, 1,000 h at 150 +/- 2 C, see para 5.1) Hardness Change -20 to -5 Tensile Strength Change -50 to 0% Elongation Change -50 to 0% Volume Change +23 to +33% 3.11 FINISHED PART 3.11.1 Original Properties Density 1.15 - 1.19 g/cm3(ASTM D 297) Hardness 46 - 54 (ASTM 1415, micro) Tensile S
12、trength, min 12 MPa (ASTM D 412, straight specimen) Elongation at Break, min 400% (ASTM D 412, straight specimen) 3.11.2 Heat Aged (ASTM D 865, 168 h at 150 +/- 2 C) Hardness Change -2 to +5 Tensile Strength Change, max -10 to +10% Elongation Change, max -30 to +15% ENGINEERING MATERIAL SPECIFICATIO
13、NWSP-M2D377-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 3.11.3 Immersion in Three Currently Approved Automatic Transmission Fluids (ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) Hardness Change -25 to -10 Tensile Strength Change -50 to 0% Elongation C
14、hange -50 to 0% Volume Change +23 to +33% 3.11.4 Compression Set, max 30% (ASTM D 395, Method B, 168 h at 150 +/- 2 C, radially cut, with radius of specimen perpendicular to plane of platen) 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requ
15、irements of this specification. 5.1 For information on currently approved automatic transmission fluids for use in this specification contact: Materials Laboratory 13/100 Transmission & Axle Engrg. Research and Engineering Center Materials Engineering Ford Motor Company, Ltd Ford Motor Company Laindon, Basildon, P.O. Box 2097 Essex SS15 6EE, England 36200 Plymouth Road Livonia, MI 48151, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd. Princes Highway, Norlane Victoria 3214, Australia
