1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 09 13 Revised Format Revision 2003 01 27 Activated L. Hess Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 HOSE, REINFORCED RUBBER, DIESEL FUEL WSS-M96D33-B2 RESISTANT, CONDUCTIVE 1. SCOPE This s
2、pecification defines a reinforced elastomeric hose with a non-barrier layer construction and having a conductive tube that is resistant to diesel fuel. The cover is heat and ozone resistant and manufactured using a “no lead“ cure system. 2. APPLICATION This specification was released originally for
3、diesel fuel filler hose and vent lines. The maximum working pressure should not exceed 104 kPa. Long term continuous operating temperature should not exceed 100 C and maximum intermittent temperature excursions should not exceed 125 C. This construction is not recommended for bio-diesel applications
4、. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 TUBE CONSTRUCTION The hose consists of an inner tube of diesel fuel resistant elastomer such as
5、 nitrile rubber (NBR), one ply of braided, knit, or spiral woven fabric, and a cover of heat and ozone resistant elastomer such as chlorinated polyethylene or chlorosulphonated polyethylene (CPE/CSM). Deviations from the above suggested elastomers must be agreed upon between supplier and Ford Motor
6、Company Materials Engineering. 3.3 ORIGINAL PROPERTIES Tube Cover 3.3.1 Hardness, IRHD, +/-5 70 70 (ISO 48/ASTM D 1415) 3.3.2 Hardness, Type A, points, +/-5 70 70 (ISO 868, ASTM D 2240) 3.3.3 Tensile Strength, MPa, min 12.5 11.5 (ISO 37/ASTM D 412, Die C) 3.3.4 Elongation, %, min 350 130 3.3.5 Modul
7、us at 100% Elongation, 3.0 6.5 Mpa, min 3.3.6 Compression Set, % 50 75 (ISO 815/ASTM D 395, Method B, button specimens, 22 h at 125 C) ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-B2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 Tube Cover 3.4 HEAT AGED,
8、cover only (ISO 188/ASTM D 573 1000 h at 100 C) 3.4.1 Tensile Strength change, % - -10 3.4.2 Elongation Change, % - -55 3.4.3 Hardness Change, points max - +20 3.5 HEAT AGED, cover only (ISO 188/ASTM D 573, 168 h at 125 C) 3.5.1 Tensile Strength Change, % max - -30 3.5.2 Elongation Change, % max - -
9、50 3.5.3 Hardness Change, points, max - +20 3.6 IMMERSION IN ASTM FUEL C, tube only (ISO 1887/ASTM D 471, 360 h at 40 C) 3.6.1 Hardness Change, points -40 - 3.6.2 Tensile Strength Change, % -40 - 3.6.3 Elongation Change, % -45 - 3.6.4 Volume Change, % 35 - 3.6.4.1 Dry Out (24 h at 70 C) Hardness Cha
10、nge, pts +16 - Volume Change, % -20 - 3.7 IMMERSION IN DIESEL FUEL, tube only (ISO 1887/ASTM D 471, 360 h at 40 C) 3.7.1 Hardness Change, points -30 - 3.7.2 Tensile Strength Change, % -15 - 3.7.3 Elongation Change, % -10 - 3.7.4 Volume Change, % 25 - 3.7.4.1 Dry Out (24 h at 70 C) Hardness Change, p
11、ts 10 - Volume Change, % -10 - ENGINEERING MATERIAL SPECIFICATION WSS-M96D33-B2 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.8 OZONE RESISTANCE, Cover only 0 (ASTM D 1149, 50 pphm ozone, 568 h 40 C) 3.9 BURST PRESSURE, finished hose, MPa 1.0 (ASTM D 380
12、) 3.10 VACUUM COLLAPSE, % -20 3.11 COLD FLEXIBILITY No cracks or crazing (SAE J30R11) 3.12 OVALITY, % 75 minimum (ASTM D 380) 3.13 FIRE RESISTANCE, cover Pass (ISO 3795, 60 sec max) 3.14 ADHESION (ASTM D 413, strip method, type A) Tube to Ply kN/mm 1.0 minimum Cover to Ply kN/mm 1.0 minimum 3.15 INS
13、TALLATION EFFORTS, N, max As defined on the Engineering Drawing (Use mating production fittings for testing, lube with P80) 3.16 ELECTRICAL RESISTANCE Less than or equal to 106 ohms (FLTM BP 108-10) 3.17 IDENTIFICATION MARKINGS Hose shall be identified with: . The size of inside diameter in mm, and
14、hose manufacturers and/or coupling manufacturers code marking, and/or . Hose manufacturers construction number. Hose shall also be identified with an adequate date code to maintain lot traceability. It is the hose manufacturers responsibility to keep complete records against this date code showing t
15、he date of manufacturer of hose materials and test results. Markings shall not be soluble in water or automatic transmission fluid or power steering fluid. These markings shall appear on the outer cover of the hose in contrasting color, at intervals of not greater than 250 mm. Each coupled hose asse
16、mbly shall have a date code of coupling, the Ford Motor Company part number, and the coupling manufacturers identification mark stamped on either end fitting or the center connection. Additional manufacturers markings on the hose and/or coupling for more positive control is permissible. 3.18 HOSE CONSTRUCTION - ELASTOMERS Tube/Cover Nitrile Rubber/Chlorosulfonated Polyethylene (CSM) or /Chlorinated Polyethylene (CPE), or NBR/CSM or CPE with Polyester (PET OR PBT) reinforcement.
