1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 25 N-STATUS Use industry standard C. Mracna, NA 2004 08 24 Revised Para 3.0 inserted; para 3.3, 3.4 & 4 deleted 1984 05 22 Released CE3PRD863100E120 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 o
2、f 4 FLUOROELASTOMER, OIL SEAL ESE-M2D338-A1 ESE-M2D338-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is a high abrasion, heat and oil resistant fluoroelastomer. 2. APPLICATION These specifications were released originally for material used for the power steer
3、ing gear pinion shaft seal and rotating shaft oil seal where long seal life and resistance to the new SF oils is required. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materi
4、als (WSS-M99P1111-A). 3.1 SLAB STOCK SPECIMENS All tests are to be carried out on slab samples (ASTM D 3182) 1.9 +/- 0.1 mm thick, manufactured from the same material and under equivalent cure conditions as for production parts. A1 A2 3.1.1 Original Properties Specific Gravity 1.91 - 2.01 1.83 - 2.0
5、2 (ASTM D 792) Hardness, Durometer A 80 +/- 5 75 +/- 5 (ASTM D 2240) Tensile Strength, MPa, min 9.5 9.0 (ASTM D 412, Die C) Elongation, % min 180 200 (ASTM D 412, Die C) 100% Modulus, MPa, min 4.3 3.4 (ASTM D 412, Die C) Tear Strength, kN/m, min 26 25 (ASTM D 624, Die B) Compression Set, % max 22 22
6、 (ASTM D 395, Method B, 70 h at 150 +/- 1 CENGINEERING MATERIAL SPECIFICATIONESE-M2D338-A1/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 A1 A2 3.1.2 Immersion in ASTM Oil #1 (ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change -3 to +5 -3 t
7、o +5 Tensile Strength -10 to +15 -10 to +18 Change, % Elongation Change, % -15 to +10 -15 to +10 180 Bend Test No cracks (Bent completely flat against itself) Volume Change, % -3 to +5 -3 to +7 3.1.3 Immersion in ASTM Oil #3 (ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change -8 to 0
8、+/- 5 Tensile Strength -10 to +8 -12 to +13 Change, % Elongation Change, % -14 to +12 -18 to +12 180 Bend Test No cracks (Bent completely flat against itself) Volume Change, % 0 to +8 0 to +10 3.1.4 Heat Aged (ASTM D 865, 168 h at 225 +/- 1 C, Aluminum Block) Hardness Change, max +8 +10 Tensile Stre
9、ngth Change, -10 to +10 +30 % max Elongation Change, % max -15 -35 100% Modulus Change, +25 +30 % max 180 Bend Test No cracks (Bent completely flat against itself) ENGINEERING MATERIAL SPECIFICATIONESE-M2D338-A1/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 o
10、f 4 A1 A2 3.1.5 Cold Test At -40 C No cracks (FLTM BP 106-03) Samples shall not crack on flexing in test fixture. Condition samples prior to cold test per the following: .Immerse samples in ASTM Oil #1 at 150 +/- 1 C for 168h. .Remove samples from ASTM Oil #1, place in “bent loop“ test fixture and c
11、ondition in cold chamber at -40 +/-1 C for 5 h prior to flexing. 3.1.6 Immersion in Automatic Transmission Fluid ESD-M2C138-CJ, Exxon FN-1973 (ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change +5 +5 Tensile Strength Change, -60 -65 % max Elongation Change, % max -65 -65 Volume Change
12、, % max +8 +8 3.2 FINISHED PARTS 3.2.1 Original Hardness, IRHD 75 +/- 5 70 +/- 5 (ASTM D 1415) 3.2.2 Immersion in ASTM Oil #1 (ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change -1 to +5 7 180 Bend test No cracks (Bent completely flat against itself) Volume Change*, % -3 to +5 +/- 5 3
13、.2.3 Immersion in ASTM Oil #3 (ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change -8 to 0 8 180 Bend Test No cracks (Bent completely flat against itself) Volume Change*, % 0 to +8 0 to +12 ENGINEERING MATERIAL SPECIFICATIONESE-M2D338-A1/A2Printed copies are uncontrolled Copyright 2009
14、, Ford Global Technologies, LLC Page 4 of 4 A1 A2 3.2.4 Heat Aged (ASTM D 865, 168 h at 225 +/- 1 C, Aluminum Block) Hardness Change, max +8 +10 3.2.5 Adhesion (Rubber to metal) No complete bond failure Test Method: Strip approximately 3 mm of rubber from the metal by using a sharp knife and pull rubber tab at 90 angle. *The weight of seal stock for Volume Change determination shall be 0.4 g, min.
