1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 26 N-STATUS No known use. No Replacement Named C. Mracna, NA 2004 08 27 Revised Para 3.0 inserted; para 3.1, 3.2, 3.5, 3.6 & 4 deleted 1985 06 14 Released CE3PRD863100E162 Printed copies are uncontrolled Copyright 2009, Ford Global Tec
2、hnologies, LLC Page 1 of 2 SILICONE RUBBER, HIGH TEMPERATURE ESE-M2D359-A RESISTANT - SPARK PLUG INSULATOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high temperature (288 C) resistant silicone rubber. 2. APPLICATION This specification was released origina
3、lly for material used to manufacture molded spark plug insulators for vehicles requiring high temperature material. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard requirements For Production Materials (WS
4、S-M99P1111-A). 3.3 MOLDED TEST SPECIMENS 3.3.1 All test specimens shall be cut from 150 x 150 mm molded test slabs having a nominal thickness of 1.9 mm. Molding conditions must be the same as those used for molded parts and must be submitted at the time of qualification testing. 3.3.2 Color Gray (un
5、less otherwise specified on the engineering drawing) 3.3.3 Hardness, Durometer A 57 +/- 5 (ASTM D 2240) 3.3.4 Tensile Strength, min 6.2 MPa (ASTM D 412, Die C) 3.3.5 Elongation, min 300% (ASTM D 412, Die C) 3.3.6 Tear Strength, min 13 kN/m (ASTM D 624, Die C) 3.3.7 Dielectric Strength, min 20 kV/mm
6、(ASTM D 149, short time) ENGINEERING MATERIAL SPECIFICATIONESE-M2D359-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.3.8 Heat Aging (ASTM D 573, 70 h at 288 C) Tensile Strength, min 3.45 MPa Elongation, min 150% Hardness, Durometer A Change, max +15 3.3.
7、9 Compression Set, max 35% (ASTM D 395, method B, 70 h at 177 +/- 2 C) 3.4 QUALIFICATION TESTS Qualification tests shall be used for initial approval and when questions regarding material quality arise. 3.4.1 Immersion in ASTM No. 3 Oil (ASTM D 471, 70 h at 150 +/- 2 C) Tensile Strength, min 3.45 MP
8、a Elongation, min 175% Hardness, Durometer A Change -30 to 0 Volume Change, max +50% 3.4.2 Low Temperature Resistance No cracking After conditioning the material for 70 h at -40 C, bend 180 over the low temperature conditioned 12.7 mm diameter mandrel. 3.4.3 Ozone Resistance (ASTM D 1171) No checking or cracking after 72 h at 38 +/- 1 C at an ozone concentration of 50 +/- 5 parts per 100 million parts of air.
