1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 14 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.5, 3.6 & 4 deleted 1991 10 10 Revised & Updated NT00E10087879001 T.P. Koch1987 03 15 Released 611423-P T.P. KochPrinted copies are uncontrolled Copyright 2004, Ford Global Technologie
2、s, LLC Page 1 of 4 ETHYLENE/ACRYLIC (AEM) RUBBER, AUTOMATIC WSP-M2D375-A TRANSMISSION FLUID RESISTANT, FILTER GROMMET 1. SCOPE The material defined by this specification is an ethylene acrylic elastomer having good compression set and tear resistance, and moderate oil resistance. 2. APPLICATION This
3、 specification was released originally for material used in a transmission filter grommet to seal internal transmission leakage. The material is capable of withstanding -40 to 150 C temperature range in a static, oil soaked environment. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERI
4、ALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL TESTING 3.4.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimen
5、s 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 following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2 Hardness, International 70 - 80 (ISO 48/ASTM D 1415) 3.4.3 Hardness, Durometer A 6
6、8 - 82 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.4.4 Tensile Strength, min 13.0 MPa (ISO 37/ASTM D 412, Die B) 3.4.5 Elongation at Break, min 200% (Test Method according to para 3.4.5) 3.4.6 Modulus at 100% Elongation 5.3 MPa (Test Method accor
7、ding to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSP-M2D375-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 4 3.4.7 Tear Strength, min 20 kN/m (ISO 34, Method B, Procedure (a)/ ASTM D 624, Die C) 3.4.8 Brittleness Point, max -25 C (ISO 812, Type B Specim
8、en/ASTM D 2137, except 2.0 +/- 0.2 mm specimen thickness) 3.4.9 Compression Set, max 45% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 168 h at 150 +/- 2 C) 3.4.10 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change -10 to +10 T
9、ensile Strength Change -25 to +20% Elongation Change -30 to +15% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.11 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air change/h, 1,000 h at 150 +/- 2 C) Hardness Change -10 to +15 Tensile Strength Change, max -35% Elong
10、ation Change, max -60% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.12 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -10 to +5 Tensile Strength Change -25 to +15% Elongation Change -30 to +5% Volume Change +1 to +15% Visual
11、 Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSP-M2D375-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.4.13 Immersion in Oil No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change
12、 -25 to 0 Tensile Strength Change -70 to 0% Elongation Change -60 to 0% Volume Change +30 to +60% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.14 Immersion in Three Currently Approved Automatic Transmission Fluids (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, s
13、ee para 5.1) Hardness Change -25 to 0 Tensile Strength Change -60 to 0% Elongation Change -55 to 0% Volume Change +20 to +35% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.15 Immersion in Three Currently Approved Automatic Transmission Fluids (ISO 1817/ASTM D
14、471, 1,000 h at 150 +/- 2 C, see para 5.1) Hardness Change -25 to -0 Tensile Strength Change -60 to 0% Elongation Change -55 to 0% Volume Change +20 to +35% Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSP-M2D375-APrinted copies
15、are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved automatic transmission fluids for us
16、e 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 5.2 DENSITY 1.42 +/- .08 g/cm3(ISO 1183, Method A/ASTM D 297) 5.3 TEAR STRENGTH, min 30 kN/m (ISO 34, Method B, procedure (a)/ ASTM D 624, Die B)
