1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 21 N-STATUS No Replacement Named, No known use C. Mracna, NA 2004 10 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10, 3.11 Corrected numbering 5 1992 11 03 Released NE01E10127076071 E. J. Duda Printed copies are uncontrolled Copyr
2、ight 2009, Ford Global Technologies, LLC Page 1 of 3 SILICONE (VMQ) RUBBER, MEDIUM DUROMETER, WSE-M2D472-A/A2 LOW VOLATILES, LONG LIFE GASKET NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is a low modulus, silicone rubber with low silicone volatiles, good compre
3、ssion set, suitable for high temperature service conditions. 2. APPLICATION These specifications were released originally for material used as the best-in-class gasket the intake manifold to cylinder block where a low volatile silicone rubber is needed to prevent silica contamination of emission com
4、ponents. 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 3.4.1 Preparation of Test Specimens Test specimens may be taken from ei
5、ther 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. . Tensile Strength per ISO 371/ASTM D 412, die C, full thickness. If the
6、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. . 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 singl
7、e thickness minus any skirt. Do not buff any sample including those with a bead, except for compression set. 3.5 ORIGINAL PROPERTIES 3.5.1 Density 1.45 - 1.65 g/cm3(ISO 1183, Method A/ASTM D 297) 3.5.2 Hardness, International 60 - 70 (ISO 48/ASTM D 1415) ENGINEERING MATERIAL SPECIFICATIONWSE-M2D472-
8、A/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.5.3 Hardness, Durometer A 60 - 70 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.4 Tensile Strength, min 4.6 MPa (ISO 37/ASTM D 412, Die C) 3.5.5 Elong
9、ation at Break, min 200% (Test Method according to para 3.5.4) 3.5.6 Modulus at 100% Elongation 1800 - 3500 kPa (Test Method according to para 3.5.4) 3.5.7 Tear Strength, min 8 kN/m (ISO 34, Method B, procedure (a)/ ASTM D 624, Die B) 3.5.8 Brittleness Point, max -60 C (ISO 812, Type B specimen/ AST
10、M D 2137, Method A) 3.5.9 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.10 Compression Set, max 35% (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 0.60% (FLTM AV 102-01) 3.6 HEAT AG
11、ED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 175 +/- 2 C) 3.6.1 Hardness Durometer A Change, max +10 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. ENGINEERING MATERIAL SP
12、ECIFICATIONWSE-M2D472-A/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 175 +/- 2 C) 3.7.1 Hardness Durometer A Change, max +10 3.7.2 Tensile Strength Change, max +/- 25% 3.7.3 Elongati
13、on Change, max -30% 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.8 IMMERSION IN OIL IRM 903 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.1 Hardness Durometer A Change, max -7 3.8.2 Tensile Strength Change, max -20% 3.8.3 Elongation Change, max -25% 3.8
14、.4 Volume Change +1 to +7% 3.8.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9 IMMERSION IN OIL IRM 903 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.9.1 Hardness Durometer A Change, max -25 3.9.2 Tensile Strength Change, max +10 to -20% 3.9.3 Elongation Change, max -25% 3.9.4 Volume Change +1 to +40% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 RECYCLING CODE VMQ
