1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 16 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.4, 3.18, 3.19 & 4 1991 05 01 Released C10134396 B. Hennessey Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 HOSE, EPDM RUBBER - RAYON OR POLYESTER
2、 WSD-M96D14-A3 REINFORCED, ENGINE COOLANT RESISTANT LOW COMPRESSION SET 1. SCOPE This specification defines an internally rayon or polyester fabric reinforced, engine coolant hose. 2. APPLICATION This specification was released originally for a hose connection between the radiator and engine block w
3、here good resistance to compressive creep under securing clamps is required. The hose will withstand coolant and ambient air temperatures up to 120 C but has limited resistance to excessive oil contamination and poor resistance to fuel contamination. If resistance to ambient air or coolant temperatu
4、res above 120 C is required, then the hoses described in WSE-M96D14-A1/A2 or WSD-M96D23-A1 should be considered. Consider using WSE-M96D34-A1, A2 or A3 where resistance to electrochemical degradation is required. (Contact Materials Engineering for selection advice). 3. REQUIREMENTS 3.0 STANDARD REQU
5、IREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 DYNAMIC MECHANICAL ANALYSIS (ASTM D 4065) Ford Motor Company, at its option, may establish a shear modulus/damping vs. temperature
6、 curves plotted for -50 to +150 C temperature range for material/parts supplied to this specification. The shear modulus and damping curves established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall prod
7、uce 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 inner tube and outer cover of ethylene/propylene rubber (EPDM) with an internal reinforcing layer of a suitable knitted or braided
8、high tenacity rayon or polyester fabric. 3.6 MATERIAL TESTING 3.6.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens cut from molded test sheets manufactured from the same material and with equivalent cure to m
9、olded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm ENGINEERING MATERIAL SPECIFICATION WSD-M96D14-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.7 ORIGINAL PROPERTIES - HOSE COVER AND TUB
10、E 3.7.1 Hardness, International 60 - 70 (ISO 48/ASTM D 1415) 3.7.2 Tensile Strength, min 7 MPa (ISO 37/ASTM D 412, Die C) 3.7.3 Elongation at Break, min 250% (Test method according to 3.7.2) 3.7.4 Modulus at 100% Elongation, min 2.5 - 5.0 MPa (Test method according to 3.7.2) 3.7.5 Ozone Resistance,
11、Cover, max Rating 0 (FLTM BP 101-01, Procedure A or B) 3.8 HEAT AGED (ISO 188/ASTM D 573, 150 +/- air changes/h, 1000 h at 120 +/- 2 C) Hardness Change, max +20 Tensile Strength Change, max -15% Elongation at Break Change, max -65% 3.9 IMMERSION IN CURRENTLY RELEASED PRODUCTION ENGINE COOLANT, TUBE
12、ONLY (FLTM BO 130-01, 1000 h at 120 +/- 2 C, see Para 5.1) Hardness Change, max -10 Tensile Strength Change, max -20% Elongation at Break Change, max -45% Volume Change -10 to +15% 3.10 BURST PRESSURE, min (Unless otherwise shown on the Engineering Drawing or Engineering Specification, ASTM D 380, e
13、xcept for molded hose test on full hose, for straight hose use 250 mm length) Hose I.D. Burst 41 mm 0.5 MPa ENGINEERING MATERIAL SPECIFICATION WSD-M96D14-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.11 CIRCUMFERENTIAL SWELL, max 8% (For 25 mm I.D. an
14、d larger) Test Method: Pressurise to 6.9 kPa a straight 250 mm length of hose filled with coolant mixture as per paragraph 3.10. Measure the hose circumference at 23 +/- 2 C and 6.9 kPa pressure. Increase the coolant temperature to 93 +/- 2 C and pressurise to 172 kPa. After 8 +/- 0.25 h remeasure t
15、he circumference at 93 +/- 2 C and 172 kPa and calculate the percentage increase in circumference. 3.12 RESISTANCE TO KINKING, Collapse Allowed, max 25% (SAE J20 Part IV, except use test parameters tabulated below.) Applies to formed and straight hoses containing straight lengths equal to or greater
16、 than the test length shown below. Hose Test Centre Hole I.D., Length, Distance, Diameter, mm mm mm mm 10 250 75 O.D. + 1.5 mm 12.5 250 100 O.D. + 1.5 mm 15 300 150 O.D. + 1.5 mm 20 450 180 O.D. + 1.5 mm 25 610 250 O.D. + 1.5 mm 3.13 COVER ADHESION, min 2.5 kN/m (ASTM D 413, strip specimen, type A)
17、3.14 FLEXIBILITY AT -40 C No tube or (FLTM BN 102-01, except cover cracking use mandrel 10X nominal I.D.) 3.15 COMPRESSION SET, max 70% (FLTM BP 108-06, 24 h at 120 +/- 2 C) 3.16 IMPULSE STRENGTH Shall not burst, leak or show (Unless otherwise shown on any visible defects the Engineering Drawing or
18、Engineering Specification) (For 25 mm I.D. and smaller) 3.16.1 Test Sample A minimum 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 tha
19、n 300 mm may be cut to 300 mm for test purposes (test sample to include the most extreme bend if hose is formed). ENGINEERING MATERIAL SPECIFICATION WSD-M96D14-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.16.2 Test Procedure The samples shall be subj
20、ected 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 be circulat
21、ed through the hose during test. After running the test for 5 complete cycles test for change in Burst and Cover Adhesion. Hose I.D. Peak Pressure 16 mm 1034 +/- 34 kPa 16.5 - 19 mm 758 +/- 34 kPa 19.5 - 25 mm 518 +/- 34 kPa 3.16.3 Burst Pressure Change, max -20% (Test according to 3.12) 3.16.4 Cove
22、r Adhesion, min 2.0 kN/m (Test according to 3.13) 3.17 HOSE IDENTIFICATION (Unless otherwise specified on engineering drawing) Hose shall be identified as follows: a) Supplier identification code. b) Date of manufacture (month, year) and plant designation if supplier has more than one plant producin
23、g 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
24、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 = Month (2-digit number) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirem
25、ents of this specification. ENGINEERING MATERIAL SPECIFICATION WSD-M96D14-A3 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5 5.1 For information on currently approved engine oils for use in this specification contact: Materials Laboratory 15/GM-DO1-D Fluids
26、Materials Section Research and Engineering Center Coolants/Greases Ford Motor Company Ltd Engine Engineering Laindon, Basildon P.O. 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 Hardness, Durometer A 60 - 70 (ISO 868/ASTM D 2240)
