1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 05 25 N-STATUS No replacement named C. Mracna, NA 2004 10 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3 3.11, 3.12 & 4 1991 02 01 Released EP00E01089481000 M. Siewert Printed copies are uncontrolled Copyright 2010, Ford Global Technologi
2、es, LLC Page 1 of 5 FLUOROELASTOMER (FKM), ROTATING SHAFT WSK-M2D458-A OIL SEAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a fluoroelastomer compound. 2. APPLICATION This specification was released originally for material used for rotating shaft oil seals in
3、 transfer boxes. 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 SLAB STOCK 3.4.1 Preparation of Test Specimens All tests are to be performed on
4、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 Density 2.00 - 2.06 g/cm3(ISO 1183, Method A/ASTM D 297) 3.4.3 Hardness, Inter
5、national 70 - 80 (ISO 48/ASTM D 1415) 3.4.4 Hardness, Durometer A 75 - 85 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.4.5 Tensile Strength, min 10.0 MPa (ISO 37/ASTM D 412, Die C) 3.4.6 Elongation at Break, min 100% (Test Method according to para
6、 3.4.5) 3.4.7 Modulus at 50% Elongation, min 3.0 MPa (Test Method according to para 3.4.5) 3.4.8 Tear Strength, min 12 kN/m (ISO 34, Method B, procedure a/ ASTM D 624, Die C) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D458-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC P
7、age 2 of 5 3.4.9 Brittleness Point, max -10 C (ISO 812, Type B specimen/ASTM D 2137, Method A) 3.4.10 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.4.11 Compression Set, max 40% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up Type 1 specimens, 70 h at 150 +/- 2 C) 3.
8、5 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) 3.5.1 Hardness Change, max +5 3.5.2 Tensile Strength Change, max -20% 3.5.3 Elongation Change, max -30% 3.5.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.6 HEAT AGED (ISO 188/ASTM
9、 D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C) 3.6.1 Hardness Change, max +10 3.6.2 Tensile Strength Change, max -30% 3.6.3 Elongation Change, max -40% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 IMMERSION IN OIL No.1 (ISO 1817/ASTM D 471, 16
10、8 h at 150 +/- 2 C) 3.7.1 Hardness Change -5 to +5 3.7.2 Tensile Strength Change, max -20% 3.7.3 Elongation Change, max -40% 3.7.4 Volume Change -3 to +5% 3.7.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D458-APrinted cop
11、ies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.8 IMMERSION IN OIL No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.1 Hardness Change -7 to +3 3.8.2 Tensile Strength Change, max -20% 3.8.3 Elongation Change, max -40% 3.8.4 Volume Change 0 to +10% 3.8.5 Visual Eva
12、luation No surface tackiness or cracks when folded flat against itself. 3.9 IMMERSION IN APPROVED TRANSMISSION FLUID OF AFFECTED MODEL YEAR (ISO 1817/ASTM D 471, 1000 h at 150 +/- 2 C, see para 5.1) 3.9.1 Hardness Change 0 to +10 3.9.2 Tensile Strength Change, max -50% 3.9.3 Elongation Change, max -
13、70% 3.9.4 Volume Change -5 to +10% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10 FINISHED PARTS 3.10.1 Hardness 70 - 80 (ISO 48, micro/ASTM D 1415, micro) Test Method: Prepare and mount specimens according to FLTM BP 106-04. The hardness shall be measur
14、ed 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 the other half part the original hardness shall be measured. The average of three hardness measurements on different specimens shall
15、 be taken on each half part and be reported. The original and the changed hardness shall be measured on one and the same part. 3.10.2 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change, max +5 Visual Evaluation No surface tackiness or cracks when folded fl
16、at against itself. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D458-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 3.10.3 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -5 to +5 Volume Change - 3 to + 5 % Test Method: 0.5 g m
17、inimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10.4 Immersion in Oil No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -7 to +3 Volume Change 0 to +10% Test Method: 0.5 g minimum weight, multiple specimens
18、 allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10.5 Immersion in Approved Transmission Fluid of Affected Model Year (ISO 1817/ASTM D 471, 1000 h at 150 +/- 2 C, see para 5.1) Hardness Change 0 to +10 Volume Change -5 to +10% Test Method: 0.5 g minimum w
19、eight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10.6 Density 2.00 - 2.06 g/cm3(ISO 1183, Method A/ASTM D 297) 3.10.7 Tensile Permanent Set, max 40% (FLTM BP 116-01, 50% elongation, 22 +/- 2 h at 150 +/- 2 C) % Set = d3-d1 / d2-d1
20、 x 100 d1 = inside diameter, original d2 = inside diameter, elongated state d3 = inside diameter, after test ENGINEERING MATERIAL SPECIFICATIONWSK-M2D458-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5 5. GENERAL INFORMATION The information below is provide
21、d 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/GM-D01-D Transmission & Axle Engineering Car Engineering Material
22、s & Fasteners Engineering Ford Motor Co. Ltd. Ford Motor Company Research & Engineering Centre 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
