1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 25 N-STATUS No Replacement Named C. Mracna, NA 2004 08 18 Revised Para 3.0 inserted; para 3.12, 3.13 & 4 deleted 1982 04 30 Released 3N2-450 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 RUBB
2、ER, POLYPROPYLENE OXIDE - CALCIUM ESA-M2D321-A CARBONATE AND TITANIUM DIOXIDE FILLED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a calcium carbonate-titanium dioxide filled polypropylene oxide elastomer. 2. APPLICATION This specification was released original
3、ly for a compounded polypropylene oxide used in steering column boots. 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 TENSILE STRENGTH, min 625
4、psi (ASTM D 412, Die C) (4.3 MPa) 3.2 ELONGATION, min 575% (ASTM D 412, Die C) 3.3 HARDNESS, DUROMETER “A“ 55 +/- 5 (ASTM D 2240) 3.4 COMPRESSION SET, max 85% (ASTM D 395, Method B, plied, 22 h at 125 C) 3.5 HEAT AGED (ASTM D 865, 70 h at 125 C) 3.5.1 Hardness, Durometer “A“ Change +/- 7 3.5.2 Tensi
5、le Strength Change +/- 15% 3.5.3 Elongation Change -50 to +15% 3.6 TEAR STRENGTH, min 90 lb/in (ASTM D 624, Die C) (15.7 kN/m) 3.7 LOW TEMPERATURE BRITTLENESS, min -40 C (ASTM D 746) 3.8 OZONE RATING Must pass ESB-M9P1-A ENGINEERING MATERIAL SPECIFICATIONESA-M2D321-A Printed copies are uncontrolled
6、Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.9 CaCO3CONTENT 25 +/- 2% (Thermalgravimetric Analysis) 3.10 TITANIUM OXIDE CONTENT 25 +/- 2% (Emission Spectroscopy and X-Ray Diffraction) 3.11 Parts and material must conform to ESA-M9P7-A, except para 3.2.1, optional Durometer “A“ (ASTM D 2240).
