1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 28 N-STATUS No known use. No Replacement Named C. Mracna, NA 2004 09 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1990 04 12 Released NE01-E10000474-069 E. J. Duda Printed copies are uncontrolled Copyright 2009, Ford Gl
2、obal Technologies, LLC Page 1 of 5 FLUOROELASTOMER (FKM), ARAMID FIBERS REINFORCED WSE-M2D434-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a fluoroelastomer (FKM) with random dispersed aramid fibers as a reinforcement. This material has excellent heat, oil,
3、oxygenated and oxidized fuel resistance, and is also resistant to flex fuels. 2. APPLICATION This specification was released originally for material used as a air check valve diaphragm. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENT FOR PRODUCTION MATERIALS Material suppliers and part producers must confo
4、rm to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL TESTING 3.4.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens cut from molded test sheets manufactured from the
5、same material and with equivalent cure to molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 MOLDED SLABS 3.5.1 Density 1.81 - 1.87 g/cm3(ISO 1183, Method A/ASTM D 297) 3.5.2 Hardness, International 68 - 78 (ISO 48/ASTM D 1415) 3
6、5.3 Hardness, Durometer A 70 - 80 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.4 Tensile Strength, MPa, min 13.8 (ISO 37/ASTM D 412, Die C) 3.5.5 Elongation at Break, %, min 150 (Test Method according to para 3.5.4) ENGINEERING MATERIAL SPECIFI
7、CATIONWSE-M2D434-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 5 3.5.6 Modulus at 100% Elongation, MPa 9.6 - 11.7 (Test Method according to para 3.5.4) 3.5.7 Tear Strength, kN/m, min 13 (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.5.8 Brittleness
8、 Point, C, min -30 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.5.9 Ozone Resistance, Rating, max 0 (FLTM BP 101-01, Procedure A) 3.5.10 Compression Set, %, max 52 (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 225 +/- 2 C) 3.5.11 Heat Aged (ISO 188/ASTM D
9、573, 150 +/- 50 air changes/h, 168 h at 225 +/- 2 C) Hardness Change -10 Tensile Strength Change, max -10% Elongation Change, max -25% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.12 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 200 +/- 2
10、 C) Hardness Change -8 to +10 Tensile Strength Change, max -10% Elongation Change, max -10 % Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.13 Immersion in Oil No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -10 to +10 Tensile Strength Change,
11、max -24% ENGINEERING MATERIAL SPECIFICATIONWSE-M2D434-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 5 Elongation Change, max -30% Volume Change 0 to +12% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.14 Immersion in
12、85% Fuel C +15% Methanol (ISO 1817/ASTM D 471, 70 h at 23 +/- 2 C) Hardness Change -18 Tensile Strength change, max -55% Elongation Change, max -22% Volume Change 0 to +35% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.15 Immersion in Oxidized Fuel (Sour Gas)
13、ISO 1817/ASTM D 471, 120 h at 60 +/- 2 C, PN 180, fuel according to FLTM AZ 105-01) Test Method: Using reflux condensing equipment immerse the specimens in 180 PN (Peroxide Number) sour fuel at 60 +/- 2 C for 48 to 72 h. Dry out in the convection oven for 4 h at 100 +/- 2 C. Reimmerse the same spec
14、imens in the 180 PN sour fuel at 60 +/- 2 C for additional 48 to 72 h. The total time of both immersions shall equal 120 h. Dry specimens for 4 h at 100 +/- 2 C. Repeat above for 2 cycles and determine the following properties. Hardness Change -8 to +2 Tensile Strength Change, max -30 to +12% Elonga
15、tion Change, max +28% Volume change 0 to +7% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.6 FINISHED PART 3.6.1 Density 1.81 - 1.87 g/cm3(ISO 1183, Method A/ASTM D 297) 3.6.2 Hardness, International 68 - 78 (ISO 48/ASTM D 1415) ENGINEERING MATERIAL SPECIFICATIO
16、NWSE-M2D434-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 5 3.6.3 Hardness, durometer A 67 - 78 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.6.4 Tensile Strength, min 5.8 MPa (ISO 37/ASTM D 412, Die C) 3
17、6.5 Elongation at Break, min 180% (Test Method according to para 3.6.4) 3.6.6 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.6.7 Compression Set, max 45% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 225 +/- 2 C) 3.6.8 Heat Aged (ISO 188/ASTM D 5
18、73, 150 +/- 50 air changes/h, 168 h at 225 +/- 2 C) Hardness Change -8 Tensile Strength Change, max -10% Elongation Change, max -25% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.6.9 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 200 +/- 2 C)
19、 Hardness Change -8 to +10 Tensile Strength Change, max -10% Elongation Change, max -10% Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSE-M2D434-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page
20、 5 of 5 3.6.10 Immersion in Oil No. 3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -10 to +10 Tensile Strength Change, max -24% Elongation Change, max -22% Volume Change 0 to +10% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 5. GENERAL INFORMATION
21、The information below is provided for clarification and assistance in meeting the requirements to the specification. 5.1 For information on currently approved service fluids and other materials required for use in this specification contact: Materials Laboratory 13/100 Fluids Materials Section Resea
22、rch and Engineering Centre Coolants/Greases Ford Motor Company Ltd Engine Engineering Laindon, Basildon P.O. Box 2053 Essex SS15 6EE, England 21500 Oakwood Boulevard Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
