1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 26 N-STATUS Use industry standard C. Mracna, NA 2004 08 24 Revised Para 3.0 inserted; para 3.2, 3.3, 3.4, 3.5 & 4 deleted 1985 01 10 Released CE3PRD863100E141 E.J. Duda Printed copies are uncontrolled Copyright 2009, Ford Global Techno
2、logies, LLC Page 1 of 3 SILICONE RUBBER, HIGH TEMPERATURE - ESE-M2D347-A2 LOW DUROMETER - LONG LIFE GASKET SILICONE RUBBER, HIGH TEMPERATURE - ESE-M2D347-A4 LOW VOLATILE SILICONE, LOW DUROMETER, LONG LIFE GASKET NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are
3、 a low modulus, low durometer, high elongation silicone rubber with excellent tear resistance and compression set, suitable for long-term, high temperature service conditions. ESE-M2D347-A4 is a low volatile silicone material which must be used if contamination of emission components with silicone o
4、r silica is of concern. 2. APPLICATION These specifications were released originally for material used as the best in class gasket for intake manifold end seals. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Stan
5、dard Requirements For Production Materials (WSS-M99P1111-A). 3.1 SILICONE SLAB STOCK 3.1.1 Original Properties A2 A4 Specific Gravity 1.07 - 1.13 1.14 - 1.20 Hardness, International 32 - 44 (ISO 48/ASTM D 1415) Hardness, Durometer A 32 - 44 (ISO 868/ASTM D 2240, instantaneous plied-up specimen. Hard
6、 held durometer shall not be used) Tensile Strength, min 6.2 MPa (ISO 37/ASTM D 412, Die C) Elongation, min 700% (ISO 37/ASTM D 412, Die C) 100% Modulus 510 - 1135 kPa (ISO 37/ASTM D 412, Die C) ENGINEERING MATERIAL SPECIFICATIONESE-M2D347-A2/A4Printed copies are uncontrolled Copyright 2009, Ford Gl
7、obal Technologies, LLC Page 2 of 3 Tear Strength, min 18.0 kN/m (ISO 34, Method B, Procedure A/ ASTM D 624, Die B) 3.1.2 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 175 +/- 2 C) Hardness Change, max +12 Tensile Strength Change, max -15% Elongation Change, max -25% Visual Evalua
8、tion No surface tackiness or cracks when folded flat against itself 3.1.3 Immersion in Oil No. 1 (ISO 1817/ASTM D 471, 168 h, at 150 +/- 2 C) Hardness Change, max -8 Tensile Strength Change, max -32% Elongation Change, max -35% Volume Change 0 to +12% Visual Evaluation No surface tackiness or cracks
9、 when folded flat against itself 3.1.4 Immersion in Oil No. 2 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change, max -11 Tensile Strength Change, max -34% Elongation Change, max -36% Volume Change 0 to +16% Visual Evaluation No surface tackiness or cracks when folded flat against itself EN
10、GINEERING MATERIAL SPECIFICATIONESE-M2D347-A2/A4Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.1.5 Compression Set, max 28% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 175 +/- 2 C) 3.1.6 Cold Test No cracks After heat aging (para 3.1.2), place specimens in the cold box at -40 +/- 2 C for 24 h. Bend 180 over 12.7 mm diameter mandrel conditioned in the cold box. A2 A4 3.1.7 Silicone Volatiles, max - 0.65% (FLTM AV 102-01, as received)
