1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 27 N-STATUS No Replacement Named C. Mracna, NA 2004 09 16 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.5, 3.6 & 4 deleted 1989 04 26 Released NE01E10000474040 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies
2、 LLC Page 1 of 3 SILICONE RUBBER (VMQ), HIGH DUROMETER WSE-M2D394-A HARDNESS, HIGH TEMPERATURE, GASKET NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high durometer, good compression set and oil resistance gasket with the ability to service at temperatures be
3、tween -60 to +200 C. 2. APPLICATION This specification was released originally for material used as oil filter adaptor gasket. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Ma
4、terials (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 manufactured from the same material and with equivalent cure to molded parts are
5、 recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2 Density 1.33 - 1.39 g/cm3(ISO 1183, Method A/ASTM D 297) 3.4.3 Hardness, International 75 - 85 (ISO 48/ASTM D 1415) 3.4.4 Hardness, Durometer A 70 - 80 (ISO 868/ASTM D 2240, instantaneous, pli
6、ed-up specimen) 3.4.5 Tensile Strength, min 6.8 MPa (ISO 37/ASTM D 412, Die B) 3.4.6 Elongation at Break, min 120% (Test Method according to para 3.4.5) 3.4.7 Modulus at 100% Elongation 4.2 - 6.4 MPa (Test Method according to para 3.4.5) ENGINEERING MATERIAL SPECIFICATIONWSE-M2D394-APrinted copies a
7、re uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.4.8 Tear Strength, min 6.7 kN/m (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.4.9 Brittleness Point, max -60 C (ISO 812, Type B specimen/ASTM D 2137, Method A) 3.4.10 Ozone Resistance, max Rating 0 (FLTM BP 101-01,
8、Procedure A) 3.4.11 Compression Set, max 32% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 168 h at 175 +/- 2 C) 3.4.12 Heat Aged (ISO 188/ASTM D 573, 168 h at 175 +/- 2 C) Hardness, Durometer A Change 0 to + 7 Tensile Strength Change, max -25% Elongation Change, max -20
9、 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.13 Heat Aged (ISO 188/ASTM D 573, 1,000 h at 150 +/- 2 C) Hardness, Durometer A Change 0 to +10 Tensile Strength Change, max -16% Elongation Change, max -22% Visual Evaluation No surface tackiness or cracks when
10、folded flat against itself. 3.4.14 Immersion in ASTM Oil No.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness, Durometer A Change -8 to +4 Tensile Strength Change, max -15% Elongation Change, max -20% Volume Change 0 to +6% Visual Evaluation No surface tackiness or cracks when folded flat again
11、st itself. ENGINEERING MATERIAL SPECIFICATIONWSE-M2D394-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.4.15 Immersion in ASTM Oil No.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness, Durometer A Change -22 to 0 Tensile Strength Change, max -44% Elo
12、ngation Change, max -42% Volume Change +35% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.4.16 Silicone Volatiles, max 1.0% (FLTM AV 102-01, as received at Ford Motor Company) 5. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. Original hardness testing according to ASTM D 2240 (durometer A) will be no longer acceptable in Ford specifications after January 1991. International hardness according to ASTM D 1415 will be the only acceptable test/requirement.
