1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 24 N-STATUS Replaced by WSE-M96D34-A1/A5 C. Mracna, FNA 2006 09 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.20, 3.21 & 4 1993 10 14 Released NE01E10127076103 E.J. Duda Printed copies are uncontrolled Copyright 2010, Ford Global T
2、echnologies, LLC Page 1 of 6 HOSE, COOLANT, STRAIGHT, FORMED, OR BRANCHED HOSE, EPDM RUBBER, PARA-ARAMID FIBER WSE-M96D38-A1 REINFORCED, ENGINE COOLANT AND ELECTROCHEMICAL DEGRADATION RESISTANT HOSE, EPDM RUBBER, META-ARAMID FIBER WSE-M96D38-A2 REINFORCED, ENGINE COOLANT AND ELECTROCHEMICAL DEGRADAT
3、ION RESISTANT HOSE, EPDM RUBBER, RAYON FIBER REINFORCED, WSE-M96D38-A3 ENGINE COOLANT AND ELECTROCHEMICAL DEGRADATION RESISTANT HOSE, EPDM RUBBER, PARA-ARAMID, COPOLYMER OR WSE-M96D38-A4 MODIFIED, FIBER REINFORCED, ENGINE COOLANT AND ELECTROCHEMICAL DEGRADATION RESISTANT NOT TO BE USED FOR NEW DESIG
4、N 1. SCOPE These specifications define long life, high pressure, impulse resistant EPDM rubber coolant hose internally reinforced with a variety of synthetic fibers. These hoses are resistant to electrochemical degradation (striations). 2. APPLICATION These specifications were released originally fo
5、r materials used for branched trunk hose applications where resistance to long term impulse is required at 120 C continuous use with short term exposures up to 140 C. When used with the proper fittings and constant tension clamps they also have excellent sealability down to -40 C. 3. REQUIREMENTS Ma
6、terial specification requirements are to be used for initial qualification of materials. 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 ho
7、ses shall have a smooth bore inner tube free of visible defects or debris. The EPDM tube is to be resistant to hot engine coolant and resistant to electrochemical deterioration. The reinforcement is to be one or more plies of synthetic fiber embedded in and bonded between tube and cover and free of
8、defects that adversely affect performance. The EPDM cover is to be resistant to hot air, ozone and abrasion. The cover shall be non-blooming and black in color. ENGINEERING MATERIAL SPECIFICATIONWSE-M96D38-A1/A2/A3/A4Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page
9、2 of 6 “A1“ hoses are reinforced with para-aramid fibers which is suitable for minimal levels of impulse and/or flex conditions such as in upper and lower radiator applications. “A2“ hoses are reinforced with meta-aramid fibers which should be specified where higher levels of impulse and/or flex res
10、istance are required. These hoses are primarily used for heater and bypass applications. “A3“ hoses are reinforced with rayon fibers and should be used only in applications where the temperature does not exceed 120 C. These hoses are primarily used for lower radiator applications. “A4“ hoses are rei
11、nforced with modified para-aramid fibers (higher elongation than standard para-aramid) or copolymer para-aramid fibers. These hoses should be specified where higher levels of impulse and/or flex resistance are required. (The degree of flex resistance is between that of the hoses described in the “A1
12、“ and “A2“ specifications.) These hoses are primarily used for heater and bypass applications. 3.5 SPECIMEN PREPARATION The following tests, wherever possible, shall be performed on finished hoses and/or test specimens cut from them in accordance with ASTM D 3183. For small diameter hoses, hoses wit
13、h thin cover or tube stocks, or hoses having insufficient length, it may not be possible to obtain test specimens that meet minimum dimensional requirements described in the applicable standard test method. In such cases, deviations from standard methodology not already addressed in this specificati
14、on are to be agreed upon between the manufacturer and Ford Motor Company and are to be stated in the test report. 3.6 ORIGINAL PROPERTIES Tube Cover 3.6.1 Hardness, International 68 +/- 6 68 +/- 6 (ISO 48/ASTM D 1415) 3.6.2 Hardness, Durometer A, points 62 - 74 62 - 74 (ISO 868/ASTM D 2240, plied-up
15、 specimen) 3.6.3 Tensile Strength, MPa, min 10.0 9.0 (ISO 37, Type 1/ASTM D 412, Die C) 3.6.4 Elongation, %, min 325 275 (ISO 37/ASTM D 412, Die C) 3.6.5 Modulus at 100% Elongation, 2.5 2.5 MPa, min (ISO 37/ASTM D 412, Die C) 3.7 HEAT AGED PROPERTIES, COVER ONLY - 120 C (ISO 188/ASTM D 573, 1000 h)
16、Hardness Change, max - +25 (Not to exceed 90) Tensile Strength Change, % max - -30 Elongation Change, %, max - -75 ENGINEERING MATERIAL SPECIFICATIONWSE-M96D38-A1/A2/A3/A4Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 6 3.8 CURRENTLY RELEASED ENGINE COOLANT A
17、GED PROPERTIES 50/50% v/v MIXTURE WITH WATER, TUBE ONLY (FLTM BO 130-01, 1000 h at 125 C) Hardness Change, max +/- 6 - Tensile Strength Change, % max -18 - Elongation Change, % max -38 - Volume Change, % max +5 - 3.9 BURST PRESSURE/LEAK CHECK ON FINISHED HOSE, min (ISO 1402/ASTM D 380 at 23 C) For f
18、ormed hoses, use the full length hose as the test piece. For straight hoses, use a 250 mm length. Use water as the pressurizing liquid. The rate of pressure increase shall be a constant 7.0 MPa/minute. Rupture or pin-hole leaks at pressures less than those listed below through the hose body are cons
19、idered as a failure, but blow-off or leaking between the fitting and hose wall, as well as any other leak related to the clamp pressure or the joint area are not. Retest any sample which does not fail through the hose body. Test one sample and record results. If the result does not meet the specific
20、ation requirement, test two additional samples. If either of the retests are below specification, this is considered as a failure. Record and report all results. Hose I.D. A1 A2 A3 A4 19 mm and smaller 1.9 MPa 1.5 MPa 1.5 MPa 1.9 MPa 19 - 25 1.4 MPa 1.4 MPa 1.4 MPa 1.4 MPa 25 32 1.3 MPa 1.2 MPa 1.2
21、MPa 1.3 MPa 32 38 1.3 MPa 0.9 MPa 0.9 MPa 1.3 MPa 38 - 25 300 8 x I.D. O.D. + 1.5 mm 0.5 x I.D. nominal 3.13 TUBE TO COVER ADHESION, min 1.75 kN/m (ISO 8033, Type 1 or 2/ASTM D 413, Strip Method) 3.14 FLEXIBILITY AT -40 C No cracks in (ISO 4081, Annex B/SAE J20e) tube or cover If it is not possible
22、to obtain a straight section of sufficient length, as is the case for some formed hoses, prepare a straight length specimen using hose of the same diameter, construction, and cure as the production article. 3.15 COMPRESSION SET, max (SAE J1638, 50% compression, 70 h at 70 C, measure thickness change
23、 after 30 minutes) 25 mm I.D. and smaller 58% Larger than 25 mm I.D. 55% 3.16 IMPULSE STRENGTH Shall not burst, leak or show any (For 25 mm I.D. and smaller) visible defects ENGINEERING MATERIAL SPECIFICATIONWSE-M96D38-A1/A2/A3/A4Printed copies are uncontrolled Copyright 2010, Ford Global Technologi
24、es, LLC Page 5 of 6 3.16.1 Test Sample A min of 4 samples of each hose design, selected at random from production, shall be tested to prove compliance with this requirement. All hoses 300 mm or less in total length shall be tested as received. Hoses longer than 300 mm may be cut to 300 mm for test p
25、urposes (test sample to include the most extreme bend if hose is formed). 3.16.2 Test Procedure The samples shall be subjected to a total of 200 internal pressure pulses at a rate of 6 to 8 pressure cycles/minute with initial pressure between 0 and 276 kPa then increased over a period of 3 to 6 s to
26、 the peak pressure tabulated below for each hose size. Specified coolant mixture maintained at 100 +/- 5 C shall be circulated through the hose during test. Hose I.D. Peak Pressure 16 mm 1034 +/- 34 kPa 16.0 - 19.5 mm 758 +/- 34 kPa 19.5 - 25.0 mm 518 +/- 34 kPa 3.16.3 Burst Pressure Change, max -10
27、% (Test according to para 3.10) 3.16.4 Cover Adhesion Change, max -10% (Test according to para 3.13) 3.17 ELECTROCHEMICAL CRACK RESISTANCE No striations or cracks SAE J1684, Method 1 (whole hose) except run the test for 500 h. Results from any one size hose shall be applicable to all other sizes of
28、hoses having the same tube, cover and reinforcement. 3.18 HOSE IDENTIFICATION Unless otherwise specified on Engineering Drawing, 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 produci
29、ng hoses to this specification. No space between letters. Mandatory on hoses longer than 80 mm only. c) Ford trademark on hoses longer than 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 than 80 mm long, width of
30、 letters may be reduced to 3 mm. 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) ENGINEERING MATERIAL SPECIFICATIONWSE-M96D38-A1/A2/A3/A4Printed copies are uncontrolled Copyright 2010, Ford Global Tec
31、hnologies, LLC Page 6 of 6 3.19 SOURCE IDENTIFICATION (NAAO requirement only) Each part shall have the suppliers identification which may be either the R.M.A. plateau and pyramid symbols or the R.M.A. assigned color thread in the knit or braid reinforcement. The polymer stripe may be used with eithe
32、r above permanent identifications. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 For information on currently approved engine coolants for use in this specification contact: Materials Laborator
33、y 13/100 Fluids Materials Section Research and Engineering Centre Coolants/Greases Ford Motor Company Ltd Engine Engineering Laindon, Basildon PO BOX 2053 Essex SS15 6EE, England 21500 Oakwood Boulevard Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia 5.2 RECYCLING INFORMATION Tube/Cover - Ethylene Propylene Diene Terpolymer (EPDM) or Ethylene Propylene Copolymer (EPM). Reinforcement - Aramid or Rayon fiber.
