1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2016 08 31 N Status No usage or replacement L. Sinclair, NA 2004 09 13 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6, 3.7 & 4 deleted 1987 02 03 Released SM/ER 4452 TC B. Hennessey Copyright 2016, Ford Global Technologies, LLC Page 1 of
2、2 POLYACRYLIC (ACM) RUBBER, ENGINE OIL WSD-M2D369-A AND HIGH HEAT RESISTANT - LOW COMPRESSION SET - STATIC SEAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material described by this specification is an acrylic rubber material with good resistance to engine oils and temperatures up to 175 C. The mate
3、rial has a low compression set making it suitable for static seals between engine cover assemblies and the block or head, especially where oil is contained by the cover. 2. APPLICATION This specification was released originally for material used as a rocker cover gasket or as shown on an engineering
4、 drawing. 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 Whenever possible, all test specim
5、ens 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 test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2 Density N
6、ot Required (ASTM D 297) 3.4.3 Hardness, International 65 - 75 (ASTM D 1415) 3.4.4 Hardness, Durometer A 65 - 75 (ASTM D 2240, instantaneous, plied-up specimen) 3.4.5 Tensile Strength, min 12 MPa (ASTM D 412, Die C) 3.4.6 Elongation at Break, min 140% (ASTM D 412, Die C) ENGINEERING MATERIAL SPECIFI
7、CATION WSD-M2D369-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 3.4.7 Modulus at 100% Elongation 10.5 - 11.5 MPa (ASTM D 412, Die C) 3.4.8 Tear Strength, min 20 kN/m (ASTM D 624, Die B) 3.4.9 Compression Set, max 35% (ASTM D 395, Method B, 70 h at 150 +/
8、- 2 C) 3.4.10 Ozone Resistance, max Rating 0 (FLTM BP 101-01) 3.4.11 Heat Aged (ASTM D 573, 168 h at 175 +/- 2 C) Hardness Change 0 to +10 Tensile Strength Change, max -25% Elongation Change, max -50% 3.4.12 Immersion in ASTM Oil No.1 (ASTM D 471, 168 h at 175 +/- 2 C) Hardness Change +/- 10 Tensile
9、 Strength Change, max -20% Elongation Change, max -30% Volume Change +/- 10% 3.4.13 Immersion in ASTM oil No.3 (ASTM D 471, 168 h at 175 +/- 2 C) Hardness Change -15 to +10 Tensile Strength Change, max -15% Elongation Change, max -20% Volume Change 0 to +25% 3.5 FINISHED PART 3.5.1 Bend Test Test Method: Three sections cut from the finished part shall be bent completely flat against themselves. 3.5.1.1 Original No cracks 3.5.1.2 Heat aged as 3.4.11 No cracks 3.5.1.3 ASTM Oil No.1 aged as 3.4.12 No cracks 3.5.1.4 ASTM Oil No.3 aged as 3.4.13 No cracks
