1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 21 N-STATUS No Replacement Named C. Mracna, NA 2007 10 09 Revised Revised 3.5.1, 3.5.4, 3.5.6, 3.8 and 5.1 L. Schmalz 1993 02 27 Released NB00I10043054225 L. A. Graham Printed copies are uncontrolled Copyright 2009, Ford Global Technol
2、ogies, LLC Page 1 of 3 SILICONE ELASTOMER (VMQ), NONLUBRICATED WSB-M2D280-A7 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a nonlubricated silicone elastomer having both methyl and vinyl substituent groups. 2. APPLICATION This specification was released origina
3、lly for material used for a connector seal. The recommended service temperature is between -65 and +200 C. The material shall not be used for interior applications and must not be exposed to brake fluid. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part p
4、roducers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-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 man
5、ufactured from the same material and with equivalent cure to molded parts are recommended. The 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,1.08 - 1.14 g/cm3(ISO 1183, Method A/ASTM D 297) 3.5.3 Hardness, Durometer A 33 43
6、(ISO 868/ASTM D 2240, instantaneous, plied up specimen. Hand held durometers shall not be used) 3.5.4 Tensile Strength, min 7.0 MPa (ISO 37/ASTM D412, Die C) 3.5.5 Elongation at Break, min 450% (Test Method according to para 3.5.4) ENGINEERING MATERIAL SPECIFICATIONWSB-M2D280-A7 Printed copies are u
7、ncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.5.6 Modulus at 100% Elongation 0.5 - 1.1 MPa (Test Method according to para 3.5.4) 3.5.7 Tear Strength, min 9.0 kN/m (ISO 34, Method B, Procedure (a)/ASTM d 624, Die C) 3.5.8 Brittleness Point, max -65 C (ISO 812, Type B specime
8、n/ASTM D 2137, Method A 3.5.9 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.10 Compression Set, max 18% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 70 h at 150 +/- 2 C) 3.5.11 Dielectric Strength, min 14 kV/mm (IEC 243/ASTM D 149 in insulating oil) 3
9、.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h 168 h at 150 +/- 2 C) 3.6.1 Hardness Change -5 to +10 3.6.2 Tensile Strength Change, max -20% 3.6.3 Elongation Change, max -20% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 HEAT AGED (ISO 188/AS
10、TM D 573, 150 +/- 50 air changes/h, 1,000 h at 150 +/- 2 C) 3.7.1 Hardness Change -5 to +10 3.7.2 Tensile Strength Change, max -20% 3.7.3 Elongation Change, max -20% 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSB-M2D280-A
11、7 Printed copies are uncontrolled Copyright 2009, 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 Change 0 to -12 3.8.2 Tensile Strength Change, max -30% 3.8.3 Elongation Change, max -30% 3.8.4 Volume Change 0 to +15 3.9
12、 IMMERSION IN METHANOL (ISO 1817/ASTM D 471, 168 h at 23 +/- 2 C 3.9.1 Hardness Change -5 to +10 3.9.2 Tensile Strength Change, max -20% 3.9.3 Elongation Change, max -20% 3.9.4 Modulus at 100 T Elongation Change, max -30% 3.9.5 Volume Change -10 to +20% 3.9.6 Visual Evaluation No surface tackiness o
13、r cracks when folded flat against itself. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved services fluids and other material requires for use in this specifica
14、tion contact: Material Laboratory 13/100 Material Engineering Research and Engineering Centre Ford Motor Company Ford Motor Company Ltd 15000 Century Dr. Laindon, Basildon Central Laboratory Essex SS15 6EE, England Dearborn, MI 48120-1267, USA Material Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia SILICONE VOLATILES, max 0.6% (As received at Ford Motor Company) (FLTM AV 102-01) RECYCLING CODE VMQ
