1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 4 2014 05 29 Revised See Summary of revisions A. Reaume, NA 2012 08 28 Revised Amended para 3.8, 3.9 V.Cerato, EU 2007 02 20 Revised Inserted 3.22, Pressure cycling A. Reaume, NA Controlled document at www.MATS Copyright 2014, Ford Globa
2、l Technologies, LLC Page 1 of 8 HOSE, EPDM RUBBER, PARA-ARAMID FIBERS WSE-M96D34-A1 REINFORCED, ENGINE COOLANT AND ELECTRO- CHEMICAL DEGRADATION RESISTANT, HIGH ELONGATION, LOW MODULUS HOSE, EPDM RUBBER, META-ARAMID FIBERS WSE-M96D34-A2 REINFORCED, ENGINE COOLANT AND ELECTRO- CHEMICAL DEGRADATION RE
3、SISTANT, HIGH ELONGATION, LOW MODULUS HOSE, EPDM RUBBER, RAYON OR PET FIBER REINFORCED, WSE-M96D34-A3 ENGINE COOLANT AND ELECTROCHEMICAL DEGRADATION RESISTANT, HIGH ELONGATION, LOW MODULUS, OR A COPOLYMER PARA-ARAMID HOSE, EPDM RUBBER, MODIFIED PARA-ARAMID FIBERS WSE-M96D34-A4 REINFORCED, ENGINE COO
4、LANT AND ELECTRO- CHEMICAL DEGRADATION RESISTANT, HIGH ELONGATION, LOW MODULUS HOSE, EPDM RUBBER, META-ARAMID OR MODIFIED WSS-M96D34-A5 PARA-ARAMID FIBERS REINFORCED, ENGINE COOLANT AND ELECTRO-CHEMICAL DEGRADATION RESISTANT, HIGH ELONGATION, LOW MODULUS, HIGH PRESSURE RESISTANCE 1. SCOPE These spec
5、ifications define long life, high pressure EPDM rubber coolant hoses internally reinforced with a variety of synthetic fibers. All these hoses are resistant to electrochemical (striations) degradation. 2. APPLICATION These specifications address electrochemical degradation which is the root cause of
6、 coolant hose cracks and striations and the sealing requirements of the hoses at high and low temperatures. They characterize hoses which are resistant to electrochemical damage, air, coolant, and ozone up to 120 C continuous with short term exposures up to 140 C. When used with the proper fittings
7、and constant tension clamps, they also have excellent sealability down to -40 C. These materials may be used in branched hose applications. This document does not address special design considerations such as excessive pressures, impulse cycles, or bend radii, See coolant hose design guide for desig
8、n considerations. “A1“ hoses have para-aramid (Kevlar) fiber reinforcement which is sufficient for all applications that do not have excessive impulse and/or flex conditions. This specification is used mostly for upper and lower radiator hoses. This specification is not recommended for new applicati
9、ons. ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Global Technologies, LLC Page 2 of 8 “A2“ hoses have meta-aramid (Nomex) fiber reinforcement which should be specified only where excessive impulse and/or flex resistance are required. This specification is
10、used for heater and bypass hoses. “A3“ hoses have rayon or polyethylene terephthalate fiber reinforcement and should be used only in applications where the temperature does not exceed 120 C. This hose is made primarily for lower radiator hose applications. The compound properties of “A3“ hoses are e
11、quivalent to “A1“ and “A2“ hoses. This specification is not recommended for new applications in North America. “A4“ hoses have a modified para-aramid (K 119) (or a copolymer para-aramid (Technora) fiber reinforcement which should be specified where excessive impulse and/or flex resistance are requir
12、ed such as heater and bypass hoses. “A5“ hoses have either a meta-aramid (see A2) or a modified para-aramid (see A4) fiber reinforcement with a construction that will withstand higher system pressures. This specification should be used on applications where an even greater resistance to pressure is
13、required. 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). 3.1 COMPOSITION Compounds formulated to these specifications shall not contain thiuram and
14、no more than 0.04 wt % thiocarbamates. 3.2 DYNAMIC MECHANICAL ANALYSIS (ASTM D 4065) Ford Motor Company, at its option, may establish a shear modulus/damping vs. temperature curves plotted for -40 to +135 C temperature range for material/parts supplied to this specification. The shear modulus and da
15、mping curves established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce shear modulus and damping curves that correspond to the reference standard when tested under the same conditions. 3.3 HOSE
16、CONSTRUCTION The hose shall consist of an EPDM rubber tube and cover internally reinforced with para-aramid (Kelvar) fibers (WSE-M96D34-A1) or meta-aramid (Nomex) fibers (WSE-M96D34-A2), rayon or polyethylene terephthalate fibers (WSE-M96D34-A3) or modified para-aramid (K-119) or copolymer para-aram
17、id (Technora) fibers (WSE-M96D34-A4). 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 ar
18、e thinner then recommended by an applicable Industry Standard/Test Method. ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Global Technologies, LLC Page 3 of 8 3.4 ORIGINAL PROPERTIES Tube Cover 3.4.1 Hardness, Durometer A 58 - 70 60 - 72 (ISO 868/ASTM D 2240,
19、 instantaneous, plied-up specimen) 3.4.2 Tensile Strength 10.0 MPa min 9.0 MPa min (ISO 37/ASTM D 412, Die C) 3.4.3 Elongation (ISO 37/ASTM D 412, Die C) . Sulfur Cured 420 % min 350 % min . Peroxide Cured 250 % min 250 % min 3.4.4 Modulus at 100% Elongation, 2.0 - 4.0 % 2.0 - 4.0 % MPa, min (ISO 37
20、/ASTM D 412, Die C) 3.4.5 Ozone Resistance, Cover - Rating 0 max (FLTM BP 101-01, Procedure A or B) 3.5 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h 135 C 150 C Hardness Change +14 max +17 max Tensile Strength Change -18 % max -32 % max Elongation Change . Sulfur Cured -65 % max -7
21、5 % max . Peroxide Cured -20 % max -25 % max Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h) 120 C 135 C Hardness Change +18 max +22 max (Actual Hardness not to exceed 90) Tensile Strength Change -
22、25 % max -38 % max ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Global Technologies, LLC Page 4 of 8 120 C 135 C Elongation Change -75 % max -88 % max . Sulfur Cured -75 % max -88 % max . Peroxide Cured -30 % max -42 % max Visual Evaluation No surface tacki
23、ness or cracks when folded flat against itself. 3.7 IMMERSION IN CURRENTLY RELEASED ENGINE COOLANT, 50/50% v/v MIXTURE WITH WATER, TUBE ONLY (FLTM BO 130-01, Method B, 168 h at 125 +/- 2 C) Hardness Change +/- 6 max Tensile Strength Change -18 % max Elongation Change -40 % max Volume Change +4.4 % m
24、ax 3.8 IMMERSION IN CURRENTLY RELEASED ENGINE COOLANT, 50/50% v/v MIXTURE WITH WATER, TUBE ONLY (FLTM BO 130-01, Method B, 1000 h at 125 +/- 2 C) Hardness Change +/- 6 max Tensile Strength Change -18 % max Elongation Change -45 % max Volume Change +6 % max 3.9 BURST PRESSURE, MPa, min (ASTM D 380, e
25、xcept for molded hose test on full hose, for straight hose use 250 mm length) Hose I.D. A1 A2 A3 A4 A5 19mm and smaller 1.9 1.7 1.2 2.1 3.4 20 25 1.4 1.5 1.1 2.0 10 times max peak operating pressures 26 32 1.3 1.4 1.1 1.8 33 38 1.3 1.3 0.9 1.6 39 45 1.1 1.1 0.9 1.4 45 and larger As shown on Engineer
26、ing drawing ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Global Technologies, LLC Page 5 of 8 3.10 BURST PRESSURE AFTER WET HEAT AGING (ASTM D 380, fill hose with 50/50% coolant and water. Heat to 104 +/- 2 C for 2000 h) A1 A2 A3 A4/A5 % Change, max -28 -10
27、 -45 -28 (All hose diameters) 3.11 CIRCUMFERENTIAL SWELL 12% max (For 25 mm I.D. and larger) Test Method: Assemble a straight 250 mm length of hose in a test fixture and pressurize with a mixture consisting of 50% by volume coolant concentrate (see para 4) and 50% water at 23 +/- 2 C and 6.9 kPa pre
28、ssure and measure the circumference of the hose. Increase the coolant temperature to 140 +/- 2 C and pressurize to 240 kPa. After 8 +/- 0.25 h re-measure the circumference. Calculate the percentage increase in diameter. 3.12 RESISTANCE TO KINKING (For 25 mm I.D. and smaller) Applies to straight hose
29、s containing straight lengths equal to or greater than the test length shown below. Test Method: The hose sample shall be stabilized at 23 +/- 2 C before start of test. The test fixture shall consist of 25 mm flat plate with 2 holes for each size hose. Diameters and center distances between holes ar
30、e tabulated below. Bend hose through 180 and insert in the fixture, with each end of the test length flush with the opposite side. Requirement: The sample shall show no visible evidence of buckling and shall pass a steel ball freely through the sample hose. Hose I.D., mm Test Length, mm Center Dista
31、nce, mm Hole Diameter, mm Ball Diameter, mm 25 450 8 x I.D. O.D. + 1.5 mm 0.5 x I.D. nominal 25 300 8 x I.D. O.D. + 1.5 mm 0.5 x I.D. nominal 3.13 COVER ADHESION (ASTM D 413, strip specimen, type B) Tube to Ply 1.75 kN/m min Cover to Ply 1.75 kN/m min 3.14 FLEXIBILITY AT -40 C No cracks in (FLTM BN
32、102-01, except use mandrel 10 x tube or cover nominal I.D., for 25 mm I.D. and smaller) ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Global Technologies, LLC Page 6 of 8 3.15 COMPRESSION SET (FLTM BP 108-06, 70 h at 70 +/- 2 C, except thickness change after
33、 30 minutes) 25 mm I.D. and smaller 62 % max Larger than 25 mm I.D. 56 % max 3.16 IMPULSE STRENGTH Shall not burst, (For 25 mm I.D. and smaller) leak or show any visible defects 3.16.1 Test Sample A minimum of 4 samples of each hose design, selected at random from production as shipped to Ford, shal
34、l 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 purposes (test sample to include the most extreme bend if hose is formed, and must include any crimped/coupled fittings)
35、. 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/min with initial pressure between 0 and 276 kPa then increased over a period of 3 to 6 s to the peak pressure tabulated below for each hose size. Specified coolant mi
36、xture maintained at 100 +/- 5 C shall be circulated through the hose during test. Hose I.D. (mm), Peak Pressure (kPa), A1/A2/A3/A4/A5 16 1034 +/- 34 16.5-19 758 +/- 34 19.5-25 518 +/- 34 3.16.3 Burst Pressure Change -10% max (Test according to para 3.9) 3.16.4 Cover Adhesion Change -10% max (Test ac
37、cording to para 3.13) 3.17 BRABOLYZER TEST No striations (SAE J1684, 500 h at 100 +/- or cracks 2 C at 12 volts) 3.18 STAINING POTENTIALOF DEPOSITS FROM COOLANT/HOSE INTERACTION (FLTM BP 108-09, 500 h at lowest possible reflux. Engine coolant(s) and degas bottle material(s) as defined by Ford materi
38、als engineering.) 3.18.1 Color Stability, CIElab, exposure to liquid 21 delta E max (150 min x 10 x 4.0 +/- 0.2 mm) Note: Degas bottle material cannot be stained such that coolant level would not be visible ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Globa
39、l Technologies, LLC Page 7 of 8 3.19 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 producing hoses to this speci
40、fication. No space between letters. Mandatory on hoses longer than 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 than 80 mm long, width of letters may be reduce
41、d 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) 3.20 SOURCE IDENTIFICATION (FNA requirement only) Each part shall have the suppliers identification which may be either the R.M.A. plateau an
42、d pyramid symbols or the R.M.S. assigned color thread in the knit or braid reinforcement. The polymer stripe may be used with either above permanent identifications. 3.21 PRESSURE CYCLING TEST No burst, visable leak, (Test per ES-E7EE-8286-AA, paragraph F (Pressure Cycling), or deformation 200,000 c
43、ycles minimum. Run a minimum of 4 hoses per test, 100% of hoses must pass. This test applies to water pump outlet hoses only) 3.22 COVER RESISTIVITY (SAEJ2790) Initial, 400 k Min After heat aging, Per Para. 3.5 250 k Min 4. GENERAL INFORMATION The information given below is provided for clarificatio
44、n and assistance in meeting the requirements of these specifications. Contact GMFS for any questions regarding currently approved engine coolants for use in this specification. 5. SUMMARY OF REVISIONS 2014 05 29 Modified para. 3.1 to clarify no thiuram allowed. 2012 08 28 Amended para 3.8 volume cha
45、nge from 4.9% max to 6% max Amended para 3.9 A3 burst pressure 2011 11 02 Added 3.18 Staining potential. ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2014, Ford Global Technologies, LLC Page 8 of 8 2011 06 13 Added Requirements in 3.1 and Renumber. Removed mailing addresses. Revised Tube requirements in 3.5 and 3.6. Revised burst requirement for A5 in 3.9. Added 3.18 Coolant Staining Test
