1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 5 2015 08 14 Revised, A1 to N Status See Summary of revisions A. Reaume, NA 2014 05 29 Revised See Summary of revisions A. Reaume, NA 2007 02 20 Revised Inserted 3.22, Pressure cycling A. Reaume, NA Controlled document at www.MATS Copyri
2、ght 2015, Ford Global 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 NOT TO BE USED FOR NEW DESIGN HOSE, EPDM RUBBER, META-ARAMID FIBERS WSE-M96D34-A2 REINFORCED, E
3、NGINE COOLANT AND ELECTRO- CHEMICAL DEGRADATION RESISTANT, 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-
4、ARAMID FIBERS WSE-M96D34-A4 REINFORCED, ENGINE COOLANT 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 MOD
5、ULUS, HIGH PRESSURE RESISTANCE 1. SCOPE These specifications 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 elec
6、trochemical degradation which is the root cause of 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 exposure
7、s up to 140 C. When used with the proper fittings 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 b
8、end radii, See coolant hose design guide for design 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
9、specification is not recommended for new applications. ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2015, 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 fl
10、ex resistance are required. This specification is 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 applica
11、tions. The compound properties of “A3“ hoses are equivalent 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 e
12、xcessive impulse and/or flex resistance are required 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 application
13、s where an even greater resistance to pressure is required. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when this specification is listed on the drawing, CAD file, or othe
14、r documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and
15、 50 +/- 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.3 COMPOSITION Compounds formulated to these specifications shall not contain thiuram and no more than 0.04 wt % thiocarbamates in the inner layer (tube) of the construction. 3.
16、4 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 damping curves established for initial appr
17、oval 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. 3.5 HOSE CONSTRUCTION The hose shall consist of an
18、 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-aramid (Technora) fibers (WSE-M96D34-A4). The
19、 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 ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2015, Ford Global Technologies, LLC Page
20、3 of 8 variation in test values can be anticipated when evaluating materials that are thinner then recommended by an applicable Industry Standard/Test Method. 3.6 ORIGINAL PROPERTIES Tube Cover 3.6.1 Hardness, Durometer A 58 - 70 60 - 72 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen) 3.6.2
21、Tensile Strength 10.0 MPa min 9.0 MPa min (ISO 37/ASTM D 412, Die C) 3.6.3 Elongation (ISO 37/ASTM D 412, Die C) . Sulfur Cured 420 % min 350 % min . Peroxide Cured 250 % min 250 % min 3.6.4 Modulus at 100% Elongation, 2.0 - 4.0 % 2.0 - 4.0 % MPa, min (ISO 37/ASTM D 412, Die C) 3.6.5 Ozone Resistanc
22、e, Cover - Rating 0 max (FLTM BP 101-01, Procedure A or B) 3.7 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 -75 % max . Peroxide Cured -20 % max -25 %
23、max Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.8 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 -25 % max -38 % max ENGINEERING MATERIAL S
24、PECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2015, 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 tackiness or cracks when folded flat against i
25、tself. 3.9 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 % max 3.10 IMMERSION IN CURRENTLY RELEASED E
26、NGINE 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 3.11 BURST PRESSURE, MPa, min (ASTM D 380, except for molded hose test on full hose
27、, 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 Engineering drawing ENGINEERING MATERIAL SPECIF
28、ICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2015, Ford Global Technologies, LLC Page 5 of 8 3.12 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 -45 -28 (All hose diameters) 3.13 CIRC
29、UMFERENTIAL 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 pressure and measure the circumference of
30、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. 3.14 RESISTANCE TO KINKING (For 25 mm I.D. and smaller) Applies to straight hoses containing straight lengths equal to
31、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 are tabulated below. Bend hose through 18
32、0 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 Distance, mm Hole Diameter, mm Ball Diameter
33、, 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 3.15 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 3.16 FLEXIBILITY AT -40 C No cracks in (FLTM BN 102-01, except use mandrel 10 x tube or
34、 cover nominal I.D., for 25 mm I.D. and smaller) ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WSS-M96D34-A5 Copyright 2015, Ford Global Technologies, LLC Page 6 of 8 3.17 COMPRESSION SET (FLTM BP 108-06, 70 h at 70 +/- 2 C, except thickness change after 30 minutes) 25 mm I.D. and smaller 62
35、% max Larger than 25 mm I.D. 56 % max 3.18 IMPULSE STRENGTH Shall not burst, (For 25 mm I.D. and smaller) leak or show any visible defects 3.18.1 Test Sample A minimum of 4 samples of each hose design, selected at random from production as shipped to Ford, shall be tested to prove compliance with th
36、is 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). 3.18.2 Test Procedure The samples sha
37、ll 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 mixture maintained at 100 +/- 5 C shall b
38、e 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 3.18.3 Burst Pressure Change -10% max (Test according to para 3.11) 3.18.4 Cover Adhesion Change -10% max (Test according to para 3.15) 3.19 BRABOLYZER
39、TEST No striations (SAE J1684, 500 h at 100 +/- or cracks 2 C at 12 volts) 3.20 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 materials engineering.) 3.20.1 Color Stabili
40、ty, 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 2015, Ford Global Technologies, LLC Page 7 of 8 3.21 H
41、OSE 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 specification. No space between letters. Ma
42、ndatory 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 reduced to 3 mm. The following code format i
43、s recommended, but not mandatory: G 2 01 Where: G = Plant Designation 2 = Year (single digit) 01 = Week (2-digit number) 3.22 SOURCE IDENTIFICATION (FNA 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.S. assign
44、ed color thread in the knit or braid reinforcement. The polymer stripe may be used with either above permanent identifications. 3.23 PRESSURE CYCLING TEST No burst, visible leak, (Test per ES-E7EE-8286-AA, paragraph F (Pressure Cycling), or deformation 200,000 cycles minimum. Run a minimum of 4 hose
45、s per test, 100% of hoses must pass. This test applies to water pump outlet hoses only) 3.24 COVER RESISTIVITY (SAEJ2790) Initial, 400 k Min After heat aging, Per Para. 3.7 250 k Min 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requir
46、ements of these specifications. Contact GMFS for any questions regarding currently approved engine coolants for use in this specification. 4.1 APPROVAL OF MATERIALS Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Developm
47、ent, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must b
48、e available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effects Analysis, Control Plans, Certification testing) with Ford. ENGINEERING MATERIAL SPECIFICATION WSE-M96D34-A1/A4, WS
49、S-M96D34-A5 Copyright 2015, Ford Global Technologies, LLC Page 8 of 8 4.2 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability t
