1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 25 N-STATUS No replacement named C. Mracna, NA 2004 11 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.14, 3.15 & 4 deleted 1989 04 29 Released NT00I10002443013 T. P. Koch Printed copies are uncontrolled Copyright 2010, Ford Global T
2、echnologies, LLC Page 1 of 5 ETHYLENE/ACRYLIC (AEM) RUBBER LOW COMPRESSION WSP-M2D373-A2 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. APPL
3、ICATION This specification was released originally for material used for transmission O rings. 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 SL
4、AB STOCK 3.4.1 Preparation of Test Specimens All tests are to be performed on specimens die-cut from the molded test sheets manufactured from the same material and with equivalent cure to production parts. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2
5、Density 1.31 - 1.35 g/cm3(ISO 1183, Method A/ASTM D 297) 3.4.3 Hardness, International 61 - 69 (ISO 48/ASTM D 1415) 3.5.3 Hardness, Durometer A 72 - 78 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.4.5 Tensile Strength, min 10 MPa (ISO 37/ASTM D 41
6、2, Die C) 3.4.6 Elongation at Break, min 175% (Test Method according to para 3.4.5) 3.4.7 Modulus at 100% Elongation 4.4 MPa (Test Method according to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSP-M2D373-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5
7、 3.4.8 Tear Strength, min 22 kN/m (ISO 34, Method b, procedure a/ ASTM D 624, Die C) 3.4.9 Brittleness Point, max -25 C (ISO 812, Type B specimen/ASTM D 2137, Method A) 3.4.10 Compression Set, max 25% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up Type 1 specimens, 168 h at 150 +/-
8、2 C) 3.4.11 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change -1 to +8 Tensile Strength Change -10 to +10% Elongation Change -30 to +15% Modulus at 100% Elongation Change, max +25% Visual Examination No surface tackiness or cracks when folded flat against
9、 itself. 3.4.12 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 150 +/- 2 C) Hardness Change -1 to +8 Tensile Strength Change, max -20% Elongation Change, max -30% Modulus at 100% Elongation Change, max +25% Visual Examination No surface tackiness or cracks when folded flat again
10、st itself. 3.4.13 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -15 to 0 IHRD Tensile Strength Change -5 to +20% Elongation Change -10 to +20% Volume Change 0 to +15% ENGINEERING MATERIAL SPECIFICATIONWSP-M2D373-A2 Printed copies are uncontrolled Copyright 2010, F
11、ord Global Technologies, LLC Page 3 of 5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.14 Immersion In Oil No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -35 to 0 IHRD Tensile Strength Change -50 to 0% Elongation Change -45 to 0% Volume Chang
12、e +30 to +60% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.15 Immersion in Three Currently Released Automatic Transmission Fluids (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) Hardness Change -25 to -10 Tensile Strength Change -25 to 0% Elongation
13、 Change -10 to +30% Modulus at 100% Elongation Change, max -40% Volume Change +20 to +30% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5 FINISHED PARTS 3.5.1 Original Properties Density 1.31 - 1.35 g/cm3(ISO 1183, Method A/ASTM D 297) Hardness 58 - 68 (ISO 48,
14、micro/ASTM D 1415, micro) Test Method: Prepare and mount specimens according to FLTM BP 106-04. Tensile Strength, min 10 MPa (ISO 37/ASTM D 412, Die C) Elongation, min 200% (Test Method according to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSP-M2D373-A2 Printed copies are uncontrolled Copyright
15、 2010, Ford Global Technologies, LLC Page 4 of 5 3.5.2 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change -3 to +8 Tensile Strength Change -20 to 0% Elongation Change -30 to +15% Visual Evaluation No surface tackiness or cracks when folded flat against its
16、elf. 3.5.3 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -15 to 0 Volume Change 0 to +15% Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.4 Immersion in Oil No.3 (
17、ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -35 to 0 Volume Change +30 to +60% Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.5 Immersion in Three Currently Released Automatic Transmi
18、ssion Fluids (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) Hardness Change -25 to -10 Tensile Strength Change -30 to 0 Elongation Change -16 to +24 Volume Change +20 to +30% Test Method: 0.5 g minimum weight, multiple specimens allowed. ENGINEERING MATERIAL SPECIFICATIONWSP-M2D373-A2 Pri
19、nted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.6 Compression Set, max 35% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up type 1 specimens, 168 h at 150 +/- 2
20、 C) 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 service fluids and other materials required for use in this specification contact: Materials Laboratory 15/
21、GM-D01-D Transmission & Axle Engineering Car Engineering Materials & Fasteners Engineering Ford Motor Co. Ltd. Ford Motor Company Research & Engineering Centre PO Box 2097 Laindon, Basildon Bin 29B Livonia, MI 48151 Essex SS15 6EE USA England Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214 Australia
