1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 07 21 Revised Para 3.0 inserted; para 3.1, 3.16 & 4 deleted 1978 11 08 Metricated, Renumbered and Retyped Supp #15 CE3H-RD782440-E 1973 07 11 Released 2C372-E3C-218 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies,
2、 LLC Page 1 of 3 TUBING, EPICHLOROHYDRIN RUBBER - FUEL AND OIL ESE-M2D241-A RESISTANT 1. SCOPE The material defined by this specification is nonreinforced epichlorohydrin rubber. 2. APPLICATION This specification was released originally for material used in vacuum tubing in engines and where gasolin
3、e, ozone, heat and tear resistance are major requirements. 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 Standard Requirements For Production Materials (W
4、SS-M99P1111-A). 3.2 ORIGINAL PROPERTIES Hardness - Durometer “A“ 65 - 75 (ASTM D 2240) Tensile Strength, min 1,200 psi (ASTM D 412) (8.3 MPa) Elongation, min 200% 3.3 PROPERTIES AFTER HEAT AGING (ASTM D 865, 168 h at 149 +/- 1 C) Hardness - Durometer “A“ Change 0 to +10 Tensile Strength Change, max
5、-70% Elongation Change, max -65% 3.4 PROPERTIES AFTER IMMERSION IN ASTM NO. 3 OIL (ASTM D 471, 70 h at 149 +/- 1 C) Tensile Strength Change, max -15% Elongation Change, max -45% Hardness - Durometer “A“ Change -10 to +5 Volume Change -5 to +15% ENGINEERING MATERIAL SPECIFICATIONESE-M2D241-A Printed
6、copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.5 PROPERTIES AFTER IMMERSION IN ASTM FUEL “C“ (ASTM D 471, 70 h at 23 +/- 2 C) Tensile Strength Change, max -40% Elongation Change, max -35% Hardness - Durometer “A“ Change -20 to 0 Volume Change 0 to +35% Volume Cha
7、nge, same sampling after air drying -15 to +5% (24 h at 70 +/- 3 C) 3.6 OZONE RATING Must meet (FLTM BP 101-01) ESB-M9P1-A 3.6.1 Test Method on Part When Applicable The “as received“ part having a 1 in (25 mm) minimum length, shall have one nipple expanded to a minimum internal diameter of twice the
8、 nominal inside diameter for a length of 3/4 +/- 1/8 in (19 +/- 3 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 naphtha (M14J148) to remove any wax or othe
9、r foreign material 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 397, Method “B“, 22 h at 100 C) 3.8 EXTRACTABLES (ASTM D 297) 3.8.1 Tolue
10、ne Extract, max 10% 3.8.2 Waxy Hydrocarbons, max 0.5% 3.9 VISUAL BLOOM OR OTHER CONTAMINANTS None 3.9.1 Test 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
11、23 +/- 2 C. The sample shall then be removed, sectioned longitudinally and examined for visual bloom. Any visual exudation shall be cause for rejection. 3.10 TEAR RESISTANCE Must not tear Test Method: The part shall be expanded to a minimum internal diameter of 1-1/2 times the nominal inside diamete
12、r, by forcing over a 30 tapered clean lubricated (silicone parting agent) metal cone that has a maximum finish of RMS 20 m (0.51 m). ENGINEERING MATERIAL SPECIFICATIONESE-M2D241-A Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 3 3.11 TEAR STRENGTH, min 150 lb
13、/in (ASTM D 624, Die “C“) (26 kN/m) 3.12 VACUUM COLLAPSE, max 15% 3.12.1 Test 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 under an i
14、nternal vacuum is measured. 3.13 COLD FLEXIBILITY No cracks (FLTM BP 106-03, 70 h at -34 C) 3.14 QUALITY CONFORMANCE 3.14.1 Initial Qualifications Tests Each supplier to this specification must have its initial shipment completely tested to all the above requirements by a Ford Motor Company laborato
15、ry in accordance with Q101, and the results of such tests concurred by the affected product engineering office prior to shipment. 3.14.2 Production Shipments Tubing from each lot (a lot is 50,000 ft (15,000 m) of tubing maximum, or the tubing produced in an 8 h shift) shall be tested and certified b
16、y the supplier to the requirements of para. 3.2, 3.8.1 and 3.12. In addition, the supplier must maintain records of all in-plant control parameters necessary to insure quality and uniformity from batch to batch. 3.14.3 Periodic Qualification Tests Every 4 months each hose supplier is required to per
17、form complete qualification testing on each size of hose supplied to Ford Motor Company. The testing may be performed either by a Ford or supplier laboratory and records retained for review by the appropriate quality control activity. 3.15 SOURCE IDENTIFICATION Each tubing shall have the suppliers identification marks permanently affixed. The markings shall be identical to those shown in the Rubber Manufacturers Association Source Identification Book.
