1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 23 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.26 & 4 2001 06 25 Revised Updated A. Cockman 1988 09 15 Released 107002-185CF4S Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 6 HOSE, REINFORC
2、ED FLUOROELASTOMER (FKM) RUBBER, ESF-M96D22-A OXYGENATED AND OXIDIZED FUEL RESISTANT, IN-TANK HIGH PRESSURE FUEL LINE 1. SCOPE This specification defines a reinforced fluoroelastomer (FKM) rubber hose with good resistance to oxygenated (alcohol modified) and oxidized (sour) fuels. 2. APPLICATION Thi
3、s specification was released originally for in-tank fuel lines. The hose is for use where oxygenated and/or low oxidative stability fuels may be encountered. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODU
4、CTION MATERIALS Material suppliers and part producers must conform to the Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 HOSE CONSTRUCTION The hose shall consist of a smooth bore tube of a suitable fluoroelastomer terpolymer reinforced with one ply of braided, knit, spiral or w
5、oven aramid fabric, and covered with a suitable fluoroelastomer rubber. The following tests where possible, shall be performed on finished hoses and/or test specimens cut from them in accordance with ASTM D 3183 (cutting knife procedure preferred). Greater variation in test values can be anticipated
6、 when evaluating materials that are thinner then recommended by an applicable Industry Standard/Test Method. Tube Cover 3.5 ORIGINAL PROPERTIES Tensile Strength, MPa, min 6.9 6.9 (ASTM D 412, Die C) Ultimate Elongation, % min 100 100 (ASTM D 412, Die C) Modulus at 100% Elongation, MPa, min 2.4 2.4 (
7、ASTM D 412, Die C) ENGINEERING MATERIAL SPECIFICATION ESF-M96D22-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 6 Tube Cover 3.6 HEAT AGED (ASTM D 573, 70 h at 125 +/- 2 C) Tensile Strength, MPa, min 6.9 6.9 Ultimate Elongation, % min 110 110 Visual Evaluat
8、ion No surface tackiness or cracks when folded flat against itself. 3.7 IMMERSION IN ASTM FUEL C (ASTM D 471, 48 h at 23 +/- 2 C) Tensile Strength, MPa, min 6.9 6.9 Ultimate Elongation, % min 170 170 Volume Change, % max +15 +15 3.8 IMMERSION IN INITIAL FILL UNLEADED GASOLINE (ESE-M4C89-) (ASTM D 47
9、1, 48 h at 23 +/- 2 C) Tensile Strength, MPa, min 4.7 4.7 Ultimate Elongation, % min 125 125 Volume Change, % max +10 +10 3.9 IMMERSION IN 90% ASTM FUEL C +10% ETHANOL (ASTM D 471, 48 h at 23 +/- 2 C) Tensile Strength, MPa, min 6.9 6.9 Ultimate Elongation, % min 200 200 Volume Change, % max +20 +20
10、3.10 IMMERSION IN 80% ASTM FUEL C +20% ETHANOL (ASTM D 471, 48 h at 23 +/- 2 C) Tensile Strength, MPa, min 6.9 6.9 Ultimate Elongation, % min 200 200 Volume Change, % max +20 + 20 3.11 IMMERSION IN 95% ASTM FUEL C +5% METHANOL (ASTM D 471, 48 h at 23 +/- 2 C) Tensile Strength, MPa, min 4.8 4.8 Ultim
11、ate Elongation, % min 175 175 Volume Change, % max +30 +30 ENGINEERING MATERIAL SPECIFICATION ESF-M96D22-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 6 Tube Cover 3.12 IMMERSION IN 80% ASTM FUEL C +20% METHANOL (ASTM D 471, 48 h at 23 +/- 2 C) Tensile Str
12、ength, MPa, min 4.8 4.8 Ultimate Elongation, % min 170 170 Volume Change, % max +30 +30 3.13 IMMERSION IN OXIDIZED FUEL (SOUR GAS) (FLTM AZ 105-01, PN 90, 168 h at 60 +/- 2 C) Tensile Strength, MPa, min 5.5 5.5 Ultimate Elongation, % min 195 195 Volume Change, % max +25 +25 3.14 BURST PRESSURE, min
13、6.9 MPa (ASTM D 380) 3.15 AGED BURST PRESSURE, min 5.5 MPa (ASTM D 380 and D 471) Test Method: Immerse a 250 mm length of hose in a test tube for 48 h at 23 +/- 2 C. Immediately after removal from fuel test for Burst Pressure. Use separate hose sample in each of the following test fuels: ASTM Fuel C
14、 80% Fuel C +20% Ethanol 50% Fuel C +50% Ethanol 100% Ethanol 80% Fuel C +20% Methanol 50% Fuel C +50% Methanol 100% Methanol Oxidized Fuel according to para 3.13 3.16 COPPER CORROSION, max 1b (FLTM BP 115-01 and AZ 105-01) 3.17 OZONE RESISTANCE, Tube and Cover Rating 0 (FLTM BP 101-01) 3.18 COLD FL
15、EXIBILITY, Tube and Cover No cracks or breaks Test Method: A 450 mm length of hose filled with 90% ASTM Fuel C +10% Ethanol shall be conditioned for 70 h at -34 C together with a mandrel having a diameter of 10 times the nominal O.D. of the hose. At the end of the aging period, neither the tube, nor
16、 cover shall show signs of cracking or disintegration when bent 180 over a temperature conditioned mandrel. This flexing shall be accomplished within 4 s. ENGINEERING MATERIAL SPECIFICATION ESF-M96D22-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 6 3.19 HI
17、GH TEMPERATURE RESISTANCE No cracks Test Method: A piece of hose bent into a free loop (approximately 50 mm diameter) until the ends meet shall be aged in an oven at 125 +/-2 C for 70 h. The cover shall be examined after exposure at 7 power for cracks. 3.20 ADHESION, Tube to Cover, min 1.0 kN/m widt
18、h (ASTM D 413, Strip Method, Type A) 3.21 VACUUM COLLAPSE, max 10% Test Method: The hose shall be subjected to a vacuum of 68 kPa while bent over a mandrel having a diameter of 10 times the nominal O.D. of the hose. After and during the 24 h at 125 +/- 2 C, the outside diameter shall not be less the
19、n 90% of the original. 3.22 OVALITY, min 75% I.D. minimum Ovality = - x 100 I.D. maximum 3.23 RESISTANCE TO KINKING Test Method: Insert required length of hose on test fixture securing each end with metal clamps. When installing hose, it shall be bent within 5 s in the same plane and direction as it
20、s free state curvature. Place fixture in an oven at 120 +/- 2 C for 1 h. Remove fixture from oven and within 5 min pass a steel ball of specified diameter through hose installed on fixture. Ball must pass freely. Nominal (Reference) I.D. Limits, mm Test Sample Length, min mm Ball Diameter mm 4.8 4.3
21、8/5.14 225 1.68 +/- 0.05 6.4 5.40/7.29 250 2.39 +/- 0.05 7.9 7.23/8.00 300 3.20 +/- 0.05 9.5 9.19/9.91 400 3.96 +/- 0.05 ENGINEERING MATERIAL SPECIFICATION ESF-M96D22-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 6 Sample Selection: Production hose selecte
22、d for the kink test should represent, as nearly as possible, minimum wall thickness. When recording results include wall thickness, ovality, and dimension “A“ (see above). This dimension is measured while sample is on the test fixture. 3.24 INSTALLATION EFFORT, max 89 N Tests must be completed satis
23、factorily with initial production parts for ISIR approval. Parts must be retested whenever any change is made which may affect part installation effort. Test Method: Cut hose to 41 +/- 2.5 mm length and immerse one end in 20W oil (ESE-M2C101-C) to approximately 6.4 mm depth. Immediately install hose
24、 on the test fixture with lubricated end inserted over SAE J962 Style A (tolerance on outside diameter A +/- 0.0002) formed tube to an engagement of 19 mm. Test load application shall not exceed 1 minute. Nominal (Reference) Diameter B mm +/- 0.08 Diameter C mm +/- 0.08 4.8 3.58 9.55 6.4 5.33 11.81
25、7.9 6.91 14.68 9.5 8.51 15.67 3.25 HOSE IDENTIFICATION A colored tracer cord in the reinforcement of the hose may be used for source identification. The color shall be determined between Purchasing and the supplier. The word gas/fuel and the coding described below shall appear on the outer cover of
26、the hose in contrasting color and repeated at intervals of 60 mm or less. Mandrel cured hose may be coded once per part. Hose shall be identified as follows: a) Supplier identification code. b) Date of manufacture (week, year) and plant designation if supplier has more then one plant producing hoses
27、 to this specification. No space between letters. Mandatory on hoses longer then 80 mm only. c) Ford trademark on hoses longer then 150 mm. d) All of the above printing shall be clearly and legibly printed letters of 4.5 - 6 mm in height and width. When hose is less then 80 mm long, width of letters
28、 may be reduced to 3 mm. ENGINEERING MATERIAL SPECIFICATION ESF-M96D22-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 6 The following code format is recommended, but not mandatory: G 2 01 Where: G = Plant Designation 2 = Year (single digit) 01 = Week (2-digit number)
