1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 09 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.29 & 4 1996 03 26 Revised J. Spencer 1995 10 26 Activated J. Spencer Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 8 HOSE, REINFORCED RUBBER,
2、FUEL/ALCOHOL RESISTANT, WSS-M96D33-A6 CONDUCTIVE, LOW PERMEATING 1. SCOPE This specification defines a reinforced synthetic rubber hose with a conductive barrier layer on the inner diameter. The construction has low permeation rates and good resistance to fuel/alcohol blends. 2. APPLICATION This spe
3、cification was released originally for fuel tank filler and vent hoses. 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). 3.4 HOSE CONSTRUCTION The hos
4、e shall consist of a smooth bore THV (tetrafluoroethylene hexafluoropropylene vinylidenefluoride) inner veneer, acting as a fuel barrier, an outer tube layer of epichlorohydrin rubber, one ply of braided, knit, or spiral woven fabric, and an outer epichlorohydrin rubber cover. 3.5 PHYSICAL PROPERTIE
5、S 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 materials that are thinner than recommended by an app
6、licable Industry Standard/Test Method. 3.6 ORIGINAL PROPERTIES Veneer Tube Cover 3.6.1 Hardness, International 85 95 65 75 60 - 70 (ASTM D 1415, micro) 3.6.2 Hardness, Durometer D 51 61 N/A N/A (ASTM D 2240) 3.6.3 Hardness, Durometer A N/A 65 75 60 - 70 (ASTM D 2240) 3.6.4 Tensile Strength, MPa, min
7、 12.0 6.9 5.5 (ASTM D 412, Die C) ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 8 Veneer Tube Cover 3.6.5 Elongation at Break, %, min 300 200 200 (ASTM D 412, Die C) 3.6.6 Modulus at 100% Elongation, 6.0 1.9 1
8、.9 MPa, min (ASTM D 412, Die C) 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 125 +/- 2 C) 3.7.1 Hardness Change, max N/R +20 +25 3.7.2 Tensile Strength Change, N/R -10 -10 %, max 3.7.3 Elongation Change, %, max N/R -60 -70 3.8 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air ch
9、anges/h, 1000 h at 100 +/- 2 C) 3.8.1 Hardness Change, max N/R +20 +25 3.8.2 Tensile Strength Change, N/R -15 -15 %, max 3.8.3 Elongation Change, %, max N/R -65 -70 3.9 IMMERSION IN ASTM FUEL C, Veneer Only (ISO 1817/ASTM D 471, 504 h at 40 +/- 2 C) 3.9.1 Hardness Change, max -10 3.9.2 Tensile, Stre
10、ngth Change, -15 max 3.9.3 Elongation Change, %, max -20 3.9.4 Volume Change, %, max +10 3.9.4.1 Dry Out (24 h at 70 +/- 2 C) (Use specimens from para 3.7) . Hardness Change, +5 max . Volume Change, -5 max ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 200
11、6, Ford Global Technologies, LLC Page 3 of 8 3.10 IMMERSION IN ASTM FUEL C, Cover Only (ISO 1817/ASTM D 471, 24 h at 40 +/- 2 C) 3.10.1 Hardness Change, max -30 3.10.2 Tensile Strength Change, max -45 3.10.3 Elongation Change, %, max -50 3.10.4 Volume Change, %, max 40 3.10.4.1 Dry Out (24 h at 70 +
12、/- 2 C) (Use specimens from para 3.7) . Hardness Change, max 25 . Volume Change, max -20 3.11 IMMERSION IN 75% FUEL C + 25% METHANOL, Veneer Only (ISO 1817/ASTM D 471, 360 h at 40 +/- 2 C) Veneer Tube Cover 3.11.1 Hardness Change, max -10 3.11.2 Tensile Strength Change, max -15 3.11.3 Elongation Cha
13、nge, %, max -25 3.11.4 Volume Change, %, max +10 3.11.4.1 Dry Out (24 h at 70 +/- 2 C) (Use specimens from para 3.12.4) . Hardness Change, +5 max . Volume Change, -5 max 3.12 IMMERSION IN 75% FUEL C + 25% METHANOL, Cover Only (ISO 1817/ASTM D 471, 24 h at 40 +/- 2 C) 3.12.1 Hardness Change, max -35
14、3.12.2 Tensile Strength Change, max -65 ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 8 3.12.3 Elongation Change, %, max -70 3.12.4 Volume Change, %, max 85 3.12.4.1 Dry Out (24 h at 70 +/- 2 C) (Use specimens
15、 from para 3.12.4) . Hardness Change, max 25 . Volume Change, max -25 3.13 RESISTANCE TO OXIDIZED FUEL (SOUR GAS), Veneer Only (Fuel according to FLTM AZ 105-01, PN 180) IMMERSION TIME, AT 23 +2 C 168, H 500, H 1000, H Tensile Strength Change, max -30 -30 -30 Elongation Change, %, max -15 -15 -15 3.
16、14 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 3.15 VACUUM COLLAPSE, max 20% 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
17、 O.D. of the hose for a duration of 24 h at 100 +/- 2 C. The outside diameter shall not be less than 80% of the original. This requirement shall not apply to sizes larger than 15.87 nominal ID. 3.16 COLD FLEXIBILITY, Hose No cracks or breaks Test Method: A 450 mm length of hose filled with ASTM Fuel
18、 C shall be aged for 70 hours at 23 C. After aging, the hose shall be drained. Then, hose together with a mandrel having a diameter 10 times the nominal OD will be conditioned for 70 hours at 40 C. The conditioned hose shall show no signs of cracking or disintegration when bent 180 over the mandrel.
19、 This flexing shall be accomplished within four seconds. For straight hose over 17.28 mm ID and all preformed hoses, prepare strips from the Fuel C aged hose 13 mm wide with length to be equal to the developed length of the part. Condition the strips and a 130 +/- 3 mm mandrel for 70 hours at -40 C.
20、 Bend the strips over the mandrel and examine for cracking. ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 8 3.17 HIGH TEMPERATURE RESISTANCE No cracks Test Method: Prepare for oven aging a piece of hose bent i
21、nto a free loop (approximately 250 mm diameter) until the ends meet. For straight hose over 19.05 mm ID and all preformed hoses prepares strips of hose 13 mm wide with length to be equal to the developed length of the part. Age hose or test specimens in an air circulating oven for 70 at 124 +/- 2 C.
22、 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. 3.18 OZONE RESISTANCE, Cover Rating 0 Test Method: FLTM BP 101-01, Procedure B, after the following sequen
23、ce: . Expose hose inner diameter to ASTM Fuel C for 48 h at 23 +/- 2 C, . Air dry for 70 h at 23 +/- 2 C, . Elongate 20%, . Pressurize hose to 34.5 kPa. 3.19 OVALITY, min 75% (Not applicable to hoses with I.D. greater than 16.28 mm, unless otherwise specified on engineering drawing) I.D. minimum Ova
24、lity = - x 100 I.D. maximum 3.20 FIRE RESISTANCE, Cover Self extinguishing (ISO 3795) in 1 minute 3.21 FUEL PERMEABILITY RESISTANCE, 40 C, 13.8 kPa 40 g/m2/24 h 75% FUEL C/METHANOL 25% (SAE J1737, fuel permeation 60 C, 13.8 kPa 60 g/m2/24 h by recirculation) Veneer Tube Cover 3.22 COMPRESSION SET, %
25、, max N/R 85 85 (ISO 815/ASTM D 395, Method B, except 25% compression, piled-up specimens, 22 h at 120 +/- 2 C) 3.23 COMPRESSIVE SET, max 75 (FLTM BP 108-06, 70 h at 100 C 25% compression) 3.24 ADHESION, min (ASTM D 413, Strip Method, Type A) Veneer to Tube Rubber Tearing Tube to Cover 1.7 kN/m ENGI
26、NEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 8 3.25 RESISTANCE TO KINKING (Not applicable to hoses with I.D. greater than 16.28 mm, unless otherwise specified on engineering drawing) Test Method: Insert required
27、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 its free state curvature. Place fixture in an oven at 120 +/- 2 C for 1 h. Remove fixture from oven and within 5 minutes pass a steel ball of speci
28、fied diameter through hose installed on fixture. Ball must pass freely. Nominal I.D., I.D. Limits, Test Sample Ball Diameter Mm mm Length, max mm mm 4.8 3.58/4.34 200 1.68 +/- 0.05 6.4 4.88/6.76 225 2.39 +/- 0.05 7.9 6.91/8.33 300 3.20 +/- 0.05 9.5 8.51/9.91 350 3.95 +/- 0.05 12.7 11.55/13.08 475 5.
29、08 +/- 0.05 15.9 14.60/16.28 690 7.87 +/- 0.05 Sample Selection: Production hose selected 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
30、is on the test fixture. 3.26 INSTALLATION EFFORT, max 89 N Tests must be completed satisfactorily 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 o
31、ne 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 formed tube to an engagement of 19 mm. Test load application shall not exceed 1 minute. Installation not to exceed 89 N. ENGINEERING MATERIA
32、L SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 7 of 8 Nominal Diameter A Diameter B Diameter C (Reference) mm +/- 0.05 mm +/- 0.08 mm +/- 0.08 4.8 Ref. SAE 3.58 9.55 6.4 Ref. SAE 5.33 11.81 7.9 Ref. SAE 6.91 14.68 9.5 Ref. SAE 8.51 15
33、.67 19.1 22.5 18.3 26.2 31.8 35.5 32.0 40.9 38.1 42.2 38.0 47.1 44.5 48.9 44.0 53.3 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/minute. Remove from fixture and examine for cracks or breaks. None are allowe
34、d. Proof pressure test at 35 kPa of water or air under water may alternatively be used after 135% elongation to indicate pass or fail. Use production hose clamps and mandrels simulating production tube end form. 3.28 HOSE IDENTIFICATION The colored tracer cord in the reinforcement of the hose may be
35、 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 the hose in contrasting color and repeated at intervals of 60 mm or less. Formed hose may be coded once per part. EN
36、GINEERING MATERIAL SPECIFICATION WSS-M96D33-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 8 of 8 The following format is recommended: Example Date: January 8, 1987 XX 00 7 A 08 A Shift (A-first, B-second, C-third) optional Day (2 digit number) Month (letter I
37、not to be used) Year (single digit) Plant Designation (when necessary) Supplier Identification 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 Heat Aged, Hose (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at TBD +/- 2 C) Elongation Change, %, max -50%
