1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 26 N-STATUS No known use. No Replacement Named C. Mracna, NA 2004 07 29 Revised Para 3.0 inserted; paras 3.1, 3.2, 3.3, 3.6, 3.7 and 4 deleted 1988 04 29 Released CZR1-DR214119 Printed copies are uncontrolled Copyright 2009, Ford Globa
2、l Technologies, LLC Page 1 of 2 POLYURETHANE ELASTOMER, REACTION INJECTION ESB-M2D348-A3 MOLDED (RIM) - HIGH FLEXURAL MODULUS NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a reaction injection molded (RIM) thermosetting polyurethane with a higher flexural modul
3、us. 2. APPLICATION This specification was released originally for material used in the manufacture of Mustang and Aerostar modular window assemblies. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Require
4、ments For Production Materials (WSS-M99P1111-A). 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens All test specimens shall be cut from 3.2 mm nominal thickness slab stock prepared from production compound. 3.4.2 Density 0.96 - 1.04 g/cm3(ASTM D 1622) 3.4.3 Hardness, Durometer D 35 - 45 (
5、ASTM D 2240) 3.4.4 Tensile Strength, min 10 MPa (ASTM D 412, Die A) 3.4.4.1 Elongation at Break, min 150% 3.4.5 Tear Strength, min 20 kN/m (ASTM D 624, Die C) 3.4.6 Flexural Modulus (ASTM D 790, Method I, Procedure B, 25 x 10 mm specimen size, 50 mm span, 13 mm test speed) 3.4.6.1 At -29 +/- 2 C, ma
6、x 480 MPa 3.4.6.2 At 23 +/- 2 C, min 50 MPa 3.4.6.3 At 70 +/- 2 C, min 35 Mpa ENGINEERING MATERIAL SPECIFICATIONESB-M2D348-A3 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.4.7 Brittleness Point, max -29 C (ASTM D 2137, Method A) 3.4.8 Water Immersion Dim
7、ensional Stability, +0.014 Expansion, max (FLTM BO 129-01, after 240 h) 3.4.9 Water Absorption, By Weight, max (FLTM BO 129-02) 3.4.9.1 After 24 h 3.5% 3.4.9.2 After 240 h 7.0% 3.4.10 Heat Aging Performance (ASTM D 573, 168 h at 100 +/- 2 C) 3.4.10.1 Hardness Change +/- 3 3.4.10.2 Tensile Strength C
8、hange, max -25% 3.4.10.3 Elongation Change, max -5% 3.5 SPECIAL REQUIREMENTS The following requirements shall be used only for initial approval and when questions regarding material quality arise. 3.5.1 Heat Aging Performance (ASTM D 573, 1000 h at 100 +/- 2 C) 3.5.1.1 Hardness Change +/- 7 3.5.1.2
9、Tensile Strength Change, max -30% 3.5.1.3 Elongation Change, max -20% 3.5.2 Humidity Aging Performance (1000 h at 37 +/- 1 C & 99 +/- 1% R.H., conduct tests 2 +/- 0.25 h after removal from test chamber) 3.5.2.1 Hardness Change +/- 10 3.5.2.2 Tensile Strength Change, max -25% 3.5.2.3 Elongation Change, max -25%
