1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS No replacement named J. Crist, NA 2005 02 17 Revised Inserted 3.0; Deleted 3.3 & 4 1973 04 04 Redrawn and revised COB10-719160-5 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 POLY
2、URETHANE MOLDING COMPOUND, ETHER BASED ESA-M4D347-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an ether based polyurethane compound that may be processed by either extrusion or injection molding. 2. APPLICATION This specification was released originally for
3、material used for rear spring insulator retainers. 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). 3.1 SLAB STOCK PROPERTIES 3.1.1 Specific Gravity,
4、min 1.19 (ASTM D 792) 3.1.2 Hardness - Durometer “D“ 59 - 65 (ASTM D 2240) 3.1.3 Tensile Properties (ASTM D 412, 2 in (50 mm)/min) 3.1.3.1 Tensile Stress, min At 100% Elongation 2,300 psi (15.9 MPa) At 300% Elongation 4,500 psi (31.0 MPa) 3.1.3.2 Tensile Strength, min 5,500 psi (37.9 MPa) 3.1.3.3 El
5、ongation at Break, min 320% 3.1.4 Tear Strength, min 600 lb/in (105 kN/m) (ASTM D 624, Die “C“) 3.1.5 Ozone Rating 0 (ASTM Rating, FLTM BP 101-01) 3.1.6 Low Temperature Brittleness, max -57 C (ASTM D 746) ENGINEERING MATERIAL SPECIFICATIONESA-M4D347-APrinted copies are uncontrolled Copyright 2009, F
6、ord Global Technologies, LLC Page 2 of 2 3.1.7 Properties After Oven Aging (ASTM D 573, 70 h at 102 +/- 3 C) Tensile Strength, decrease, max 15% Elongation, decrease, max 15% Hardness - Durometer “D“, change +/- 3 3.1.8 Properties After Liquid Immersion (ASTM D 471, 70 h at 100 +/-3 C, ASTM No. 1 oi
7、l) Tensile Strength, decrease, max 10% Elongation, decrease, max 10% Hardness - Durometer “D“, change +/- 3 Volume Change 0 - 3% 3.1.9 Properties After Liquid Immersion (ASTM D 471, 70 h at 100 +/- 3 C, ASTM No. 3 oil) Tensile Strength, decrease, max 10% Elongation, decrease, max 10% Hardness - Duro
8、meter “D“, change +/- 5 Volume Change 0 - 10% 3.1.10 Compression Set, max 45% (ASTM D 395, Method “B“ plyed, 22 h at 70 C) 3.2 MOLDED PARTS - QUALITY CONFORMANCE Material from parts shall be tested as follows: 3.2.1 Specific Gravity, min 1.19 (ASTM D 792) 3.2.2 Hardness - Durometer “D“ 57 - 63 (ASTM D 2240)
