1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 17 N-STATUS No Replacement Named, No known use. C. Mracna, NA 2005 01 27 Revised Removed Inactive WSE-M2D414-A2; Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 & 4 1990 01 19 Released NE01E10000474065 E. J. Duda Printed copies are unc
2、ontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 3 SILICONE (VMQ) RUBBER, HIGH TEMPERATURE WSE-M2D414-A RESISTANT, LOW VOLATILES, LONG LIFE GASKET NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are low modulus, high elongation silicone rubber with
3、 low silicone volatiles, excellent tear resistance and compression set, suitable for long-term, high temperature service conditions. 2. APPLICATION This specification was released originally for materials used as the best-in-class gaskets for the rocker arm cover and oil pan where a low volatile sil
4、icone rubber is needed to prevent silica contamination of emission components. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL TESTING 3.4.
5、1 Preparation of Test Specimens Test specimens may be taken from either test sheets or molded parts. To insure a proper cutting of specimens, backup all test sheets/parts with cardboard or a rubber sheet. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm. The te
6、st sheets must be cured for 10 minutes at 177 C. Part specimens must be cut as follows: . Tensile Strength per ISO 371/ASTM D 412, die C, full thickness. If the length between the compression limiters is not long enough to accommodate a die C, use a die exactly one-half the dimensions of the die C.
7、. Tear Strength per ISO 34/ASTM D 624, full thickness. . Volume Change - 25 mm x part width x part thickness. . Compression Set - 25 mm long x part width x single thickness minus any skirt. Do not buff any sample including those with a bead, except for compression set. ENGINEERING MATERIAL SPECIFICA
8、TIONWSE-M2D414-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.5 ORIGINAL PROPERTIES 3.5.1 Density, g/cm31.14 - 1.20 (ISO 1183, Method A/ASTM D 297) 3.5.2 Hardness, International 40 - 50 (ISO 48/ASTM D 1415) 3.5.3 Hardness, Durometer A 42 - 52 (ISO 868/AS
9、TM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.4 Tensile Strength, MPa, min 7.5 (ISO 37/ASTM D 412, Die C) 3.5.5 Elongation at Break, %, min 700 (Test Method according to para 3.5.4) 3.5.6 Modulus at 100% Elongation, kPa 0.8 - 1.4 (Test Method according to p
10、ara 3.5.4) 3.5.7 Tear Strength, min, kN/m 28 (ISO 34, Method B, procedure (a)/ ASTM D 624, Die B, the median or means of 3 specimens) 3.5.8 Brittleness Point, C, max -60 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.5.9 Ozone Resistance, max Rating 0 (FLTM BP 101-1, Procedure A) 3.5.10 Compres
11、sion Set, %, max 22 (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 175 +/- 2 C) 3.5.11 Silicone Volatiles, as received at Ford, %, max 0.65 (FLTM AV 102-01) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 175 +/- 2 C) 3.6.1 Hardness Durometer
12、 A Change +15 (WSE-M2D414-A: 62 Durometer A, max) ENGINEERING MATERIAL SPECIFICATIONWSE-M2D414-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.6.2 Tensile Strength Change, %, max -20% 3.6.3 Elongation Change, %, max -28% 3.6.4 Visual Evaluation No surface
13、 tackiness or cracks when folded flat against itself. 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 150 +/- 2 C) 3.7.1 Hardness Durometer A Change +15 3.7.2 Tensile Strength Change, %, max -30 3.7.3 Elongation Change, %, max -38 3.7.4 Visual Evaluation No surface tackiness o
14、r cracks when folded flat against itself. 3.8 IMMERSION IN OIL No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.1 Hardness Durometer A Change -8 3.8.2 Tensile Strength Change, %, max -20 3.8.3 Elongation Change, %, max -25 3.8.4 Volume Change, % +1 to +7 3.8.5 Visual Evaluation No surface tackin
15、ess or cracks when folded flat against itself. 3.9 IMMERSION IN OIL No.2 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.9.1 Hardness Durometer A Change -14 3.9.2 Tensile Strength Change, %, max +10 to -30 3.9.3 Elongation Change, %, max -22 3.9.4 Volume Change, %, max +1 to +15 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself.
