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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2004 09 16 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6, 3.7 & 4 deleted 1989 03 09 Released NE01-E-10000474-037E. J. Duda Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 4 FLUOROELASTOMER (FKM),
2、OIL SEAL VALVE STEM WSE-M2D392-A 1. SCOPE The material defined by this specification is a heavy duty fluoroelastomer with excellent oil resistance and compression set suitable for long-term, high temperature service conditions. 2. APPLICATION This specification was released originally for material u
3、sed for valve stem seals where stability at high oil temperature is required. 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 MATERIAL TESTING 3.
4、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 same material and with equivalent cure to molded parts are recommended. The test sheets shall have the foll
5、owing dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2 Density 2.05 - 2.11 g/cm3 (ASTM D 297) 3.4.3 Hardness, International 64 - 75 (ASTM D 1415) 3.4.4 Hardness, Durometer A 67 - 77 (ASTM D 2240, instantaneous, plied-up specimen) 3.4.5 Tensile Strength, min 9 MPa (ASTM D 412, Die C) 3.4.6 Elonga
6、tion at Break, min 200% (Test Method according to para 3.4.5) 3.4.7 Modulus at 100% Elongation 4.0 - 8.5 MPa (Test Method according to para 3.4.5) 3.4.8 Tear Strength, min 14.5 kN/m (ASTM D 624, Die C) -,-,- ENGINEERING MATERIAL SPECIFICATION WSE-M2D392-A Printed copies are uncontrolled Copyright 20
7、04, Ford Global Technologies, LLC Page 2 of 4 3.4.9 Brittleness Point, max -8 C (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 30% (ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 150 +/- 2 C) 3.4.12 H
8、eat Aged (ASTM D 573, 168 h at 175 +/- 2 C) Hardness Change -1 to +5 Tensile Strength Change -5 to +20% Elongation Change -40 to 0% Modulus at 100% Elongation Change, max +50% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.13 Heat Aged (ASTM D 573, 1,000 h at 1
9、50 +/- 2 C) Hardness Change -5 to +9 Tensile Strength Change, max -40% Elongation Change, max -38% Modulus at 100% Elongation Change, max -25% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.14 Immersion in ASTM Oil No.1 (ASTM D 471, 168 h at 150 +/- 2 C) Hardne
10、ss, Durometer A Change -3 to +2 Tensile Strength Change -5 to +25% Elongation Change -40 to 0% Modulus at 100% Elongation Change, max -35% Volume Change -2 to +3% ENGINEERING MATERIAL SPECIFICATION WSE-M2D392-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4
11、 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.15 Immersion in ASTM oil No.3 (ASTM D 471, 168 h at 150 +/- 2 C) Hardness, Durometer A Change -7 to 0 Tensile Strength Change -15 to +15% Elongation Change -40 to 0% Modulus at 100% Elongation Change, max -28% Vol
12、ume Change 0 to +8% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.16 Immersion in ASTM oil No.3 (ASTM D 471, 1,000 h at 150 +/- 2 C) Hardness Change -7 to 0 Tensile Strength Change -32% Elongation Change -37% Modulus at 100% Elongation Change, max -20% Volume
13、Change +2 to +15% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5 FINISHED PART 3.5.1 Density 2.05 - 2.11 g/cm3 (ASTM D 297) 3.5.2 Hardness, International 64 - 75 (ASTM D 1415) 3.5.3 Ozone Resistance, max Rating 0 (FLTM BP 101-1, Procedure A) 3.5.4 Heat Aged (AS
14、TM D 573, 168 h at 150 +/- 2 C) Hardness Change -2 to +5 -,-,- ENGINEERING MATERIAL SPECIFICATION WSE-M2D392-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.5 Immersion i
15、n ASTM Oil No.1 (ASTM D 471, 168 h at 150 +/- 2 C) Volume Change 0 to +8% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.5.6 Immersion in ASTM oil No.3 (ASTM D 471, 168 h at 150 +/- 2 C) Volume Change +2 to +12% Visual Evaluation No surface tackiness or cracks when folded flat against itself. -,-,-