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, 3.3, 3.6, 3.7 & 4 deleted 1985 05 07 Released CHP1DR533880 Printed copies are uncontrolled Copyright 2009, Ford Global Te
2、chnologies, LLC Page 1 of 2 SILICONE ELASTOMER, COLOR PIGMENTED - ESB-M2D357-A WEATHERABLE - EXTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high strength, color pigmented, UV stabilized silicone elastomer. 2. APPLICATION This material was released ori
3、ginally for the medium truck hold latch arm. 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 MOLDED TEST SPECIMEN 3.4.1 All test specimens shall
4、be cut from compression molded test slabs having a nominal thickness of 2.5 mm. 3.4.2 Color As specified on the engineering drawing Note: Each color requires prior approval for weather-ability and shall be shown on the Corporate “Engineering Materials Approved Source List“. 3.4.3 Density 1.24-1.32 g
5、/cm3 (ASTM D 792) 3.4.4 Hardness, Durometer A 80 - 87 (ASTM D 2240) 3.4.5 Tensile Strength, min 5.5 MPa (ASTM D 412, Die C, 508 mm/min test speed) 3.4.5.1 Elongation, min 150% 3.4.6 Tear Strength, min 20 kN/m (ASTM D 624, Die B) 3.4.7 Low Temperature Brittleness at -75 C Must pass (ASTM D 2137) 3.4.
6、8 Ozone Rating, max 0 (FLTM BP 101-01 at 100% elongation) 3.4.9 Compression Set, max 65% (ASTM D 395, Method B, plied, 22 h at 175 C) 3.4.10 Paint Staining No migration or (ESB-M9P4-A) contact stain ENGINEERING MATERIAL SPECIFICATIONPrinted copies are uncontrolled Copyright 2009, Ford Global Technol
7、ogies, LLC Page 2 of 2 3.5 QUALIFICATION TESTS Qualification tests shall be used for initial approval and when questions regarding material quality arise. 3.5.1 Heat Aging Performance (ASTM D 573, 1,000 h at 200 C) 3.5.1.1 Hardness Change, max +/- 10 3.5.1.2 Tensile Strength Change, max -45% 3.5.1.3
8、 Elongation Change, max -75% 3.5.2 Weathering Resistance After exposure in accordance with 3.5.2.1, 3.5.2.2 and 3.5.2.3, the material shall show no color change in excess of the specified rating of AATCC Gray Scale for Evaluating Change in Color (10 Step). In addition, there shall be no cracking, cr
9、azing or other deterioration than that exhibited by the material originally approved and on file in the affected materials engineering activity. 3.5.2.1 Accelerated Weather Rating 4-5 Resistance (FLTM BO 101-01, 1, 600 h) 3.5.2.2 One-Year Florida Rating 4-5 Exposure (5 south, direct weathering inland) 3.5.2.3 Two-Year Florida Rating 4 Exposure (5 south, direct weathering inland)
