1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 17 N-STATUS No Replacement Named, No known use. C. Mracna, NA 2004 09 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.13, 3.14 Corrected numbering 3.9 1990 02 01 Released C 01031532 M. Siewert Printed copies are uncontrolled Copyrigh
2、t 2009, Ford Global Technologies, LLC Page 1 of 5 POLYACRYLIC (ACM) RUBBER, ROTATING SHAFT WSK-M2D422-A OIL SEAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyacrylic rubber compound. 2. APPLICATION This specification was released originally for material
3、used for rotating shaft oil seals in manual transmissions and rear axles. 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 Prepar
4、ation 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 Density 1.44 - 1.48 g
5、/cm3(ISO 1183, Method A/ASTM D 297) 3.4.3 Hardness, International 70 - 80 (ISO 48/ASTM D 1415) 3.4.4 Hardness, Durometer A 70 - 80 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.4.5 Tensile Strength, min 8.0 MPa (ISO 37/ASTM D 412, Die C) 3.4.6 Elon
6、gation at Break, min 140% (Test Method according to para 3.4.5) 3.4.7 Modulus at 50% Elongation 2.5 - 5.5 MPa (Test Method according to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D422-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 5 3.4.8 Tear Stren
7、gth, min 9.0 kN/m (ISO 34, Method B, procedure a/ ASTM D 624, Die C) 3.4.9 Brittleness Point, max -6 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 35% (ISO 815/ASTM D 395, Method B, except 25% compre
8、ssion, plied-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 -5% 3.5.3 Elongation Change, max -20% 3.5.4 Visual Evaluation No surface tackiness or cracks when
9、 folded flat against itself. 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 150 +/- 2 C) 3.6.1 Hardness Change +7 to +15 3.6.2 Tensile Strength Change, max +20% 3.6.3 Elongation Change, max -45% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against
10、itself. 3.7 IMMERSION IN OIL No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.7.1 Hardness Change 0 to +8 3.7.2 Tensile Strength Change, max +15% 3.7.3 Elongation Change, max -31% 3.7.4 Volume Change -2.4 to -2.0% ENGINEERING MATERIAL SPECIFICATIONWSK-M2D422-APrinted copies are uncontrolled Copyri
11、ght 2009, Ford Global Technologies, LLC Page 3 of 5 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 -12 to -4 3.8.2 Tensile Strength Change, max -20% 3.8.3 Elongation C
12、hange, max -25% 3.8.4 Volume Change +10 to +12% 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, 1,000 h at 150 +/- 2 C, see para 5.1) 3.9.1 Hardness Change 0 to +8 3.9.2
13、Tensile Strength Change, max +30% 3.9.3 Elongation Change, max -60% 3.9.4 Volume Change +1.7 to +4.1% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself) 3.10 IMMERSION IN APPROVED REAR AXLE OIL OF AFFECTED MODEL YEAR (ISO 1817/ASTM D 471, 1,000 h at 150 +/- 2 C,
14、see para 5.1) 3.10.1 Hardness Change +3 to +11 3.10.2 Tensile Strength Change, max +35% 3.10.3 Elongation Change, max -35% 3.10.4 Volume Change 0 to +2% 3.10.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself) 3.11 ASH CONTENT 22 - 26% (ASTM D 297 or TGA) 3.12 FINISHE
15、D PARTS 3.12.1 Hardness 68 - 78 (ISO 48, micro/ASTM D 1415, micro) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D422-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 5 Test Method: Prepare and mount specimens according to FLTM BP 106-04. The hardness shall be measu
16、red 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 shal
17、l be taken on each half part and be reported. The original and the changed hardness shall be measured on one and the same part. 3.12.2 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change -6 to +10 Visual Evaluation No surface tackiness or cracks when folded
18、 flat against itself. 3.12.3 Immersion in Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change +2 to +10 Volume Change -6 to -1% Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.12.4 Imm
19、ersion in Oil No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -24 to -6 Volume Change +4 to +13% Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.12.5 Immersion in Approved Transmission
20、 Fluid of Affected Model Year (ISO 1817/ASTM D 471, 1,000 h at 150 +/- 2 C, see para 5.1) Hardness Change -4 to +7 Volume Change -1 to +3% Test Method: 0.5 g minimum weight, multiple specimens allowed. ENGINEERING MATERIAL SPECIFICATIONWSK-M2D422-APrinted copies are uncontrolled Copyright 2009, Ford
21、 Global Technologies, LLC Page 5 of 5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.12.6 Immersion in Approved Rear Axle Oil of Affected Model Year (ISO 1817/ASTM D 471, 1,000 h at 150 +/- 2 C, see para 5.1) Hardness Change -2 to + 9 Volume Change -3 to +2% Test
22、 Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.12.7 Density 1.44 - 1.48 g/cm3(ISO 1183, Method A/ASTM D 297) 3.12.8 Ash Content 22 - 26% (ASTM D 297 or TGA) 3.12.9 Tensile Permanent Set, max 18% (FLTM BP
23、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. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirem
24、ents of this specification. 5.1 For information on currently approved service fluids and other materials required for use in this specification contact: Materials Laboratory GB-13/100 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, England Livonia, MI 48151, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214 Australia
