1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 21 N-STATUS No Replacement Named, No known use C. Mracna, NA 2004 10 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.12, 3.13 Corrected numbering 3.9 1994 09 01 Released EP00E10348605000 K. Gerhards Printed copies are uncontrolled Co
2、pyright 2009, Ford Global Technologies, LLC Page 1 of 5 SILICONE (MQ) RUBBER, ROTATING SHAFT WSK-M2D478-A OIL SEAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a silicone rubber compound. 2. APPLICATION This specification was released originally for material u
3、sed for converter seals in the A5LDE automatic transmission. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIAL 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
4、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 Density 1.37 - 1.43 g/cm3(ISO 1183,
5、 Method A/ASTM D 297) 3.4.3 Hardness, International 78 - 88 (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 5.5 MPa (ISO 37/ASTM D 412, Die C) 3.4.6 Elongation at Brea
6、k, min 160% (Test Method according to para 3.4.5) 3.4.7 Modulus at 50% Elongation 2.8 - 3.8 MPa (Test Method according to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D478-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 5 3.4.8 Tear Strength, min 10 kN
7、/m (ISO 34, Method B, procedure a/ ASTM D 624, Die C) 3.4.9 Brittleness Point, max -45 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 25% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-
8、up Type 1 specimens, 22 h at 150 +/- 2 C) 3.5 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) 3.5.1 Hardness Change 0 to +8 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
9、 against itself. 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C) 3.6.1 Hardness Change 0 to +8 3.6.2 Tensile Strength Change, max -20% 3.6.3 Elongation Change, max -30% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 IMM
10、ERSION IN OIL No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.7.1 Hardness Change 0 to -10 3.7.2 Tensile Strength Change, max -20% 3.7.3 Elongation Change, max -20% ENGINEERING MATERIAL SPECIFICATIONWSK-M2D478-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 o
11、f 5 3.7.4 Volume Change 0 to +6% 3.7.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.8 IMMERSION IN OIL No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.1 Hardness Change -16 to -26 3.8.2 Tensile Strength Change, max -30% 3.8.3 Elongation Change, max -20% 3.
12、8.4 Volume Change +25 to +35% 3.8.5 Visual Evaluation 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 -18 to -28 3.9.2 Tensile Strength
13、 Change, max -45% 3.9.3 Elongation Change, max -20% 3.9.4 Volume Change -22 to -32% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10 FINISHED PARTS 3.10.1 Hardness 64 - 74 (ISO 48, micro/ASTM D 1415, micro) Test Method: Prepare and mount specimens accordin
14、g 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 the other half part the original hardness shall be measured. The average of three h
15、ardness 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. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D478-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC
16、Page 4 of 5 3.10.2 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change +6 to +16 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10.3 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change 0 to
17、8 Volume Change -3 to -9% Test Method: 0.5 g minimum 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 -11 to -21 Volume Change +10 to +21% Te
18、st Method: 0.5 g minimum weight, multiple specimens 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 -13 to +23
19、Volume Change +9 to +19% Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D478-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 5
20、 of 5 3.10.6 Density 1.32 - 1.38 g/cm3(ISO 1183, Method A/ASTM D 297) 3.10.7 Tensile Permanent Set, max 15% (FLTM BP 116-01, 50% elongation, 22 +/- 2 h at 100 +/- 2 C) % Set = d3-d1 / d2-d1 x 100 d1 = inside diameter, original d2 = inside diameter, elongated state d3 = inside diameter, after test 5.
21、 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/GM-D01
22、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 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
