1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 11 10 RE-ACTIVATED Spec still in use in FoE C. Mracna, NA 2009 09 17 N-STATUS No Replacement Named, No known use C. Mracna, NA 1989 09 07 Released NE01E10000474051 E. J. Duda Printed copies are uncontrolled Copyright 2010, Ford Global Tec
2、hnologies, LLC Page 1 of 3 SILICONE (VMQ) RUBBER, 70 IRHD HARDNESS, WSE-M2D412-A LONG LIFE GASKET 1. SCOPE The material defined by this specification is a medium hardness silicone rubber with excellent tear resistance, suitable for long-term, high temperature service conditions. 2. APPLICATION This
3、specification was released originally for material used as the best-in-class gasket for the intake manifold. 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-M99P1
4、111-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 same material and with equivalent cure to molded parts are recommended. The
5、test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES 3.5.1 Density 1.4 - 1.8 g/cm3(ISO 1183, Method A/ASTM D 297) 3.5.2 Hardness, International 65 - 75 (ISO 48/ASTM D 1415) 3.5.3 Hardness, Durometer A 62 - 72 (ISO 868/ASTM D 2240, instantaneous,
6、 plied-up specimen. Hand held durometers shall not be used) 3.5.4 Tensile Strength, min 6.0 MPa (ISO 37/ASTM D 412, Die C) ENGINEERING MATERIAL SPECIFICATIONWSE-M2D412-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 3 3.5.5 Elongation at Break, min 130% (Test
7、 Method according to para 3.4.5) 3.5.6 Modulus at 100% Elongation 3.8 - 6.0 MPa (Test Method according to para 3.4.5) 3.5.7 Tear Strength, min 12 kN/m (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.5.8 Brittleness Point, max -60 C (ISO 812, Type B specimen/ASTM D 2137, Method A) 3.5.9 Ozone
8、Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.10 Compression Set, max 60% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 168 h at 175 +/- 2 C) 3.5.11 Silicone Volatiles, after 24 h 0.65% exposure at Ford, max (FLTM AV 102-01) 3.6 HEAT AGED (ISO 188/ASTM D 573
9、, 150 +/- 50 air changes/h, 168 h at 175 +/- 2 C) 3.6.1 Hardness Durometer A Change +7 3.6.2 Tensile Strength Change, max -12% 3.6.3 Elongation Change, max -32% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air c
10、hanges/h, 1,000 h at 150 +/- 2 C) 3.7.1 Hardness Durometer A Change +10 3.7.2 Tensile Strength Change, max -10% 3.7.3 Elongation Change, max -58% 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSE-M2D412-APrinted copies are u
11、ncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 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 -6 3.8.2 Tensile Strength Change, max -20% 3.8.3 Elongation Change, max -18% 3.8.4 Volume Change +1 to +8% 3.8.5 Visual Evalua
12、tion No surface tackiness or cracks when folded flat against itself. 3.9 IMMERSION IN OIL No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.9.1 Hardness Durometer A Change -24 3.9.2 Tensile Strength Change, max -35% 3.9.3 Elongation Change, max -18% 3.9.4 Volume Change, max +36% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself.
