1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 05 25 A2-N-STATUS No replacement named C. Mracna, NA 2004 10 12 Revised Revised Format 1997 03 27 Inactivated Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 POLYACRYLIC (ACM) RUBBER, ROTATING SHA
2、FT OIL SEAL WSK-M2D457-A2 NOT TO BE USED FOR NEW DESIGN WSK-M2D457-A3 1. SCOPE The materials defined by these specifications are polyacrylic rubber compounds. 2. APPLICATION These specifications were released originally for material used for rotating shaft oil seals transfer boxes. 3. REQUIREMENTS 3
3、1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 SLAB STOCK 3.2.1 Preparation of Test Specimens All tests are to be performed on specimens die-cut from the molded
4、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 A2 A3 3.2.2 Density, g/cm31.38 - 1.42 1.28 - 1.32 (ISO 1183, Method A/ ASTM D 297) 3.2.3 Hardness, (IRHD) 72 - 82 65 -
5、 75 (ISO 48/ASTM D 1415) 3.2.4 Hardness, Durometer A, points 75 - 85 65 - 75 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.2.5 Tensile Strength, MPa, min 5 5 (ISO 37/ASTM D 412, Die C) 3.2.6 Elongation at Break, %, min 60 60 (Test Method according
6、to para 3.2.5) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D457-A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 A2 A3 3.2.7 Modulus at 50% Elongation, MPa, min 4.0 1.5 (Test Method according to para 3.2.5) 3.2.8 Tear Strength, kN/m, min 10 10 (ISO 34, Meth
7、od B, Procedure A/ ASTM D 624, Die C) 3.2.9 Brittleness Point, C, max - 10 -7 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.2.10 Ozone Resistance, max Rating 0 Rating 0 (FLTM BP 101-01, Procedure A) 3.2.11 Compression Set, %, max 85 70 (ISO 815/ASTM D 395, Method B, 25% compression, plied-up s
8、pecimens, 22 h at 150 +/- 2 C) 3.3 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) 3.3.1 Hardness Change, points max +10 +15 3.3.2 Tensile Strength Change, %, max -40 -40 3.3.3 Elongation Change, %, max -50 -50 3.3.4 Visual Evaluation No surface tackiness or cracks whe
9、n folded flat against itself. 3.4 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 150 +/- 2 C) 3.4.1 Hardness Change, points max +16 +20 3.4.2 Tensile Strength Change, %, max +70 -10 3.4.3 Elongation Change, %, max -75 -55 3.4.4 Visual Evaluation No surface tackiness or cracks wh
10、en folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D457-A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5 IMMERSION IN OIL No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) A2 A3 3.5.1 Hardness Change, points max -5 to +10 0 to +15
11、 3.5.2 Tensile Strength Change, %, max -30 -30 3.5.3 Elongation Change, %, max -40 -40 3.5.4 Volume Change, % -5 to +5 -5 to +5 3.5.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.6 IMMERSION IN OIL IRM 903 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.6.1 Hardn
12、ess Change, points -20 to 0 -15 to +5 3.6.2 Tensile Strength Change, %, max -40 -40 3.6.3 Elongation Change, %, max -40 -50 3.6.4 Volume Change, % 0 to +45 0 to +45 3.6.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 IMMERSION IN APPROVED TRANSMISSION FLUID OF
13、 AFFECTED MODEL YEAR (ISO 1817/ASTM D 471, 1000 h at 150 +/- 2 C, see para 5.1) 3.7.1 Hardness Change, points 0 to +10 +5 to +20 3.7.2 Tensile Strength Change, %, max -20 -20 3.7.3 Elongation Change, %, max -50 -70 3.7.4 Volume Change, % -5 to +10 -5 to +10 3.7.5 Visual Evaluation No surface tackine
14、ss or cracks when folded flat against itself. 3.8 ASH CONTENT, % 15 - 25 0 - 10 (ASTM D 297 or TGA) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D457-A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 3.9 FINISHED PARTS A2 A3 3.9.1 Hardness (IRHD) 63 - 75 52 -
15、 68 (ISO 48, micro/ASTM D 1415) Test Method: Prepare and mount specimens according to FLTM BP 106-04. The hardness shall be measured between sealing lip edge and spring groove. For each aging test 3 seals are to be cut into two equal parts in an axial direction, one half part shall be aged and on th
16、e other half part the original hardness shall be measured. The average of three hardness measurements on different specimens shall be taken on each half part and be reported. The original and the changed hardness shall be measured on one and the same part. 3.9.2 Heat Aged (ISO 188/ASTM D 573, 150 +/
17、50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change, points, max +20 +10 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9.3 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change 0 to +15 0 to +15 Volume Change, % -5 to +5 - 5 to +
18、5 Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9.4 Immersion in Oil, IRM 903 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change, points -20 to 0 -15 to +5 Volume Change, %, max +45 +45 Test
19、 Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D457-A2/A3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5 3.9.5 Immersion in
20、 Approved Transmission Fluid of Affected Model Year (ISO 1817/ASTM D 471, 1000 h at 150 +/- 2 C, see para 5.1) A2 A3 Hardness Change, points -5 to +10 +5 to +20 Volume Change, % -5 to +10 -5 to +10 Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness
21、or cracks when folded flat against itself. 3.9.6 Density, g/cm31.35 - 1.45 1.25 - 1.35 (ISO 1183, Method A/ASTM D 297) 3.9.7 Ash Content, % 15 - 25 0 - 10 (ASTM D 297 or TGA) 3.9.8 Tensile Permanent Set, %, max 40 40 (FLTM BP 116-01, 6% A2 and 50% A3 elongation, 22 +/- 2 h at 100 +/- 2 C) % Set = d3
22、dl / d2-dl x 100 dl = inside diameter, original d2 = inside diameter, elongated state d3 = inside diameter, after test 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 4.1 For information on currentl
23、y approved service fluids and other materials required for use in this specification contact: Materials Laboratory 15/GM-D01-D Transmission & Axle Engineering Car Engineering Materials & Fasteners Engineering Ford Motor Co. Ltd. Ford Motor Company Research & Engineering Center PO Box 2097 Laindon, Basildon Bin 29B Essex SS15 6EE Livonia, MI 48151 England USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214 Australia 4.2 RECYCLING CODE ACM
