1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 24 N-STATUS No replacement named C. Mracna, NA 2006 08 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.18 & 4 1988 06 15 Released PA-226132-C G. Evanoff Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Pa
2、ge 1 of 6 HOSE, REINFORCED RUBBER, FUEL RESISTANT ESA-M96D19-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines a reinforced synthetic rubber hose with good resistance to fuel. 2. APPLICATION This specification was released originally for fuel tank filler hoses. 3. REQUIREMENTS 3.0
3、STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 HOSE CONSTRUCTION The hose shall consist of a smooth bore, fuel resistant synthetic rubber tube reinforced with one o
4、r more plies of braided, knit, spiral or woven fabric covered with a suitable oil and ozone resistant synthetic rubber compound. 3.5 BURST PRESSURE, min (ASTM D 380) Hose Size, mm Burst Pressure, (Approximate ID) MPa Below 9.53 1.72 9.53 - 15.87 1.20 15.87 & Larger 0.34 3.6 VACUUM COLLAPSE, max 20%
5、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 for a duration of 24 h at 100 +/- 2 C. The outside diameter shall not be less then 80% of the original. This requirement shall not apply to sizes larger
6、 than 15.87 nominal ID. 3.7 COLD FLEXIBILITY, Tube & Cover No cracks or breaks Test Method: A 450 mm length of hose filled with ASTM Fuel C shall be conditioned for 70 h at -40 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, neith
7、er the tube, nor cover shall show signs of cracking or disintegration when bent 180 over a temperature conditioned mandrel. This flexing shall be accomplished within 4 s. For straight hose over 17.28 mm I.D. and all preformed hoses prepare strips of hose 13 mm wide with length to be equal to the dev
8、eloped length of the part. Place strips in the cold box for 70 h at -40 C, bend over 130 +/- 3 mm diameter cold conditioned mandrel and examine for cracking. ENGINEERING MATERIAL SPECIFICATIONESA-M96D19-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 6 3.8 H
9、IGH TEMPERATURE RESISTANCE No cracksTest Method: Prepare for oven aging a piece of hose bent into a free loop (approximately 250 mm diameter) until the ends meet. For straight hose over 19.05 mm I.D. and all preformed hoses prepare strips of hose 13 mm wide with length to be equal to the developed l
10、ength of the part. Age hose or test specimens in an air circulating oven for 70 h at 125 +/- 2 C. At the end of the aging period examine for cracks, re-straighten and/or re-loop and examine again noting all conditions. No signs of cracking are permitted when examined with a 7X power glass. 3.9 OZONE
11、 RESISTANCE, Cover Rating 0 Test Method: FLTM BP 101-01, Procedure B, after the following sequence: . Immerse in ASTM Fuel C for 48 h at 23 +/- 2 C, . Air dry for 70 h at 23 +/- 2 C, . Elongate 20 % 3.10 OVALITY, min 75% (Not applicable to hoses with I.D. greater then 16.28 mm, unless otherwise spec
12、ified on engineering drawing) I.D. minimum Ovality = _ x 100 I.D. maximum 3.11 FLAMMABILITY, Cover Self extinguishing in 60 s Test Method: Cut 6.4 mm wide strips longitudinally from the cover, which have been removed from the hose. A Bunsen burner shall be used to start burning of the strip until ap
13、proximately 13 mm of the strip is burning vigorously. Remove the burning strip from the flame and hold it horizontally with the outside facing upward. The flame shall be self-extinguishing within one minute. The average time of at least 6 determinations shall be used. The test shall be conducted in
14、a draft free atmosphere. 3.12 PHYSICAL PROPERTIES 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 when evaluating mater
15、ials that are thinner than recommended by an applicable Industry Standard/Test Method. 3.12.1 Original Properties Tube Cover Hardness, International 60 - 70 58 - 68 (ASTM D 1415, micro) Hardness, Durometer A 65 - 75 63 - 73 (ASTM D 2240) Tensile Strength, MPa, min 8.6 8.6 (ASTM D 412, Die C) ENGINEE
16、RING MATERIAL SPECIFICATIONESA-M96D19-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 6 Elongation at Break, %, min 250 200 (ASTM D 412, Die C) Modulus at 100% Elongation, MPa, min 1.9 1.3 (ASTM D 412, Die C) 3.12.2 Heat Aged (ASTM D 573, 70 h at 125 +/- 2 C
17、) Hardness Change, max +20 +15 Tensile Strength Change, %, max -25 -10 Elongation Change, %, max -65 -65 3.12.3 Immersion in ASTM Fuel C, Tube Only (ASTM D 471, 48 h at 23 +/- 2 C) Hardness Change, max -15 Tensile Strength Change, max -40% Elongation Change, max -40% Volume Change, max +35% 3.12.3.1
18、 Dry Out (24 h at 70 +/- 2 C) Hardness Change, max +25 Volume Change, max -25% (Use specimens from 3.12.3) 3.12.4 IMMERSION IN 85% FUEL C + 15% METHANOL, Tube Only (ASTM D 471, 70 h at 23 +/- 2 C) Hardness Change, max -20 Tensile Strength Change, max -40% Elongation Change, max -40% Volume Change, m
19、ax +50% 3.12.4.1 Dry Out (24 h at 70 +/- 2 C) Hardness Change, max +25 Volume Change, max -25% (Use specimens from 3.12.4) ENGINEERING MATERIAL SPECIFICATIONESA-M96D19-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 6 Tube Cover 3.12.5 Compression Set, %, ma
20、x 50 85 (ASTM D 395, Method B, plied specimens, 22 h at 120 +/- 2 C) 3.12.6 Adhesion, min 1.0 kN/m (ASTM D 413, Strip Method, Type A) 3.13 RESISTANCE TO KINKING (Not applicable to hoses with I.D. greater then 16.28 mm, unless otherwise specified on engineering drawing) Test Method: Insert required l
21、ength 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 its 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
22、diameter through hose installed on fixture. Ball must pass freely. Nominal I.D. Limits, Test Sample Ball Diameter (Reference) mm Length, max mm in mm 3/16 3.58/4.34 200 1.68 +/- 0.05 1/4 4.88/6.76 225 2.39 +/- 0.05 5/16 6.91/8.33 300 3.20 +/- 0.05 3/8 8.51/9.91 350 3.96 +/- 0.05 1/2 11.55/13.08 475
23、5.08 +/- 0.05 5/8 14.60/16.28 690 7.87 +/- 0.05 ENGINEERING MATERIAL SPECIFICATIONESA-M96D19-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 6 Sample Selection: Production hose selected for the kink test should represent, as nearly as possible, minimum wall
24、thickness. When recording results include wall thickness, ovality, and dimension “A“ (see above). This dimension is measured while sample is on the test fixture. 3.14 INSTALLATION EFFORT, max 89 N Tests must be completed satisfactorily with initial production parts for ISIR approval. Parts must be r
25、etested 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 on the test fixture with lubricated end inserted over SAE J962 Style A fo
26、rmed tube to an engagement of 19 mm. Test load application shall not exceed 1 minute. Nominal Diameter A, Diameter B, Diameter C, (Reference) mm +/- 0.05 mm +/- 0.08 mm +/- 0.08 3/16 Ref. SAE 3.58 9.55 1/4 Ref. SAE 5.33 11.81 5/16 Ref. SAE 6.91 14.68 3/8 Ref. SAE 8.51 15.67 3/4 22.5 18.3 26.2 1-1/4
27、35.5 32.0 40.9 1-1/2 42.2 38.0 47.1 1-3/4 48.9 44.0 53.3 3.15 FUEL PERMEABILITY RESISTANCE 500 g/m2/24 h (SAE J30, Reservoir Method) For hose 25 mm diameter and larger permeation shall not exceed 350 g/m2of inside surface area based on the nominal I.D. of the hose in a 24 h duration. 3.16 HOSE ELONG
28、ATION, min 135% Test Method: Elongate a minimum 150 mm length of hose marked with 25 mm gage length to 135% (59 mm between gage marks) at a rate of 500 mm/min. Remove from fixture and examine for cracks or breaks. None are allowed. Proof pressure test at 35 kPa of water or air under water may altern
29、atively be used after 135% elongation to indicate pass or fail. Use production hose clamps and mandrels simulating production tube end form. ENGINEERING MATERIAL SPECIFICATIONESA-M96D19-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 6 3.17 HOSE IDENTIFICATION The word gas/fuel and the coding described below shall appear on the outer cover of the hose in contrasting color and repeated at intervals of 60 mm or less. Formed hose may be coded once per part. The following format is recommended:
