1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS No Replacement Named C. Mracna, NA 2004 07 28 Revised Para 3.0 inserted; para 3.1, 3.12 & 4 deleted 1973 04 28 Released 2B3-20 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 3 EPICHL
2、OROHYDRIN, RUBBER - 70 DUROMETER “A“ HARDNESS ESE-M2D232-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is nonreinforced epichlorohydrin rubber. 2. APPLICATION This specification was released originally for material used where gasoline, ozone, heat and tear resis
3、tance are major requirements. Typical applications are exhaust and gasoline evaporative emission connectors. 3. REQUIREMENTS All tests shall be conducted on the part when applicable. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys
4、 Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 ORIGINAL PROPERTIES Hardness, Durometer “A“ 65 - 75 (ASTM D 2240) Tensile Strength, min 1,800 psi (12.4 MPa) (ASTM D 412) Elongation, min 350% (ASTM D 412) 3.3 HEAT AGED (ASTM D 865, 70 h at 149 +/- 1 C) Hardness, Durometer “A“ Ch
5、ange 0 to +10 Tensile Strength Change, max -40% Elongation Change, max -50% 3.4 IMMERSION IN ASTM #3 OIL (ASTM D 471, 70 h at 149 +/- 1 C) Tensile Strength Change, max -10% Elongation Change, max -50% ENGINEERING MATERIAL SPECIFICATIONESE-M2D232-A Printed copies are uncontrolled Copyright 2009, Ford
6、 Global Technologies, LLC Page 2 of 3 Hardness, Durometer “A“ Change -10 to 0 Volume Change 0 to +15% 3.5 IMMERSION IN ASTM FUEL “C“ (ASTM D 471, 70 h at 23 +/- 2 C) Tensile Strength Change, max -40% Elongation Change, max -50% Hardness, Durometer “A“ Change -15 to 0 Volume Change 0 to +40% Volume C
7、hange After Air Drying +/- 5% (Sample from above 24 h at 70 +/- 3 C) 3.6 OZONE RATING ESB-M9P1-A (FLTM BP 101-01) 3.6.1 Test Method on Part When Applicable The “as received“ part having 1 in (25 mm) minimum length, shall have one nipple expanded to a minimum internal diameter of twice the nominal in
8、side diameter for a length of 3/4* +/- 1/8 in (19.1 +/- 3.2 mm) by forcing the end of one fitting over the appropriate size metal mandrel lubricated with talc. The expanded outside surface of the fitting shall be wiped with a cotton gauze wetted with naptha to remove any wax or other foreign materia
9、l which may affect the ozone test. The clean expanded tubing shall then be tested per FLTM BP 101-01. *For parts less than 1 in (25 mm) long, expand for 1/2 of part length. 3.7 COMPRESSION SET, max 30% (ASTM D 395, Method“B“, 22 h at 100 +/- 1 C) 3.8 WAX OR OTHER BLOOM CONTAMINANTS 3.8.1 Waxy Hydroc
10、arbons By Weight, max 2.0% (ASTM D 297) 3.8.2 Visual Bloom or Other Contaminants: None Test Method on Part When Applicable A 1/2 in (13 mm) length (or maximum length available on smaller parts) of the fitting is to be cut, compressed flat and held in the compressed state for 24 +/- 1 h at 23 +/- 2 C
11、 The sample shall then be removed, sectioned longitudinally and examined for visual bloom. Any visual exudation shall be cause for rejection. ENGINEERING MATERIAL SPECIFICATIONESE-M2D232-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.9 TEAR RESISTANCE
12、Must not tear Test Method: The part shall be expanded to a minimum internal diameter of 2-1/2 times the nominal inside diameter, by forcing over a 30 tapered clean lubricated (silicon parting agent) metal cone that has a maximum finish of RMS 20 (0.5 m). 3.10 TEAR STRENGTH min 150 lb/in (26 kN/m) (A
13、STM D 624, Die “C“) 3.11 VACUUM COLLAPSE, max 30% Test Method on Part When Applicable Plug all openings except one which is to be attached to a vacuum system capable of maintaining 24 in Hg (81 kPa) for 5 min. The collapse of any unsupported outside diameter of the fitting shall not exceed above value.
