1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 24 N-STATUS Replaced by WSE-M96D34-A1/A5 C. Mracna, FNA2006 08 16 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.18, 3.19 & 4 2000 02 15 Activated ESK-M2D192-A2 Re-numbered B. Hennessey Printed copies are uncontrolled Copyright 2010, F
2、ord Global Technologies, LLC Page 1 of 5 HOSE, EPDM RUBBER - RAYON OR POLYESTER WSS-M96D14-A4 REINFORCED, ENGINE COOLANT RESISTANT LOW COMPRESSION SET NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a long life, reinforced, high pressure, EPDM engine coolant and
3、heater hose with improved resistance to compression set and low extractable Zinc compounds content. 2. APPLICATION This specification was released originally for a hose connection between the radiator and engine block where the amount of extractable Zinc compounds has to be limited to prevent build-
4、up of zinc-rich material in the radiator core and the de-gas bottle. 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 extractable Zinc can be tolerated in the cooling syste
5、m, WSD-M96D14-A3 can be used. If resistance to ambient air or coolant temperatures 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
6、Materials Engineering for selection advice). 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). 3.4 HOSE CONSTRUCTION The hose shall consist of an inner
7、 tube and outer cover of Ethylene/Propylene Rubber (EPDM) with an internal reinforcing layer of a suitable knitted or braided high tenacity Rayon or Polyester fabric. 3.5 MATERIAL TESTING 3.5.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished par
8、ts. When not feasible, specimens cut from the molded test sheets manufactured from the same material and with equivalent cure to molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm ENGINEERING MATERIAL SPECIFICATIONWSS-M96D14-A4Printe
9、d copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 3.6 ORIGINAL PROPERTIES - HOSE COVER AND TUBE 3.6.1 Hardness, International Tube 65 - 75 (ISO 48/ASTM D 1415) Cover 60 - 70 3.6.2 Tensile Strength, min 7 MPa (ISO 37/ASTM D 412, Die C) 3.6.3 Elongation at Break, min
10、Tube 225% (Test method according to 3.6.2) Cover 250% 3.6.4 Modulus at 100% Elongation, min 2.5 - 5.0 MPa (Test method according to 3.6.2) 3.6.5 Ozone Resistance, Cover, max Rating 0 (FLTM BP 101-01, Procedure A or B) 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- air changes/h, 1000 h at 120 +/- 2 C) H
11、ardness Change, max +20 Tensile Strength Change, max -15% Elongation at Break Change, max -65% 3.8 IMMERSION IN CURRENTLY RELEASED PRODUCTION ENGINE COOLANT, TUBE 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
12、 Change, max -45% Volume Change -10 to +15% 3.9 EXTRACTABLE ZINC COMPOUNDS, max 0.1% (FLTM BP 108-09) 3.10 BURST PRESSURE, min (Unless otherwise shown on the Engineering Drawing or Engineering Specification,ASTM D 380, except for molded hose test on full hose, for straight hose use 250 mm length) EN
13、GINEERING MATERIAL SPECIFICATIONWSS-M96D14-A4Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 Hose I.D. Burst 41 mm 0.5 MPa 3.11 CIRCUMFERENTIAL SWELL, max 8% (For 25 mm I.D. and larger) Test Method: Pressurize to 6.9 kPa a straight 250 mm length of hose fill
14、ed with coolant mixture as per paragraph 3.8. Measure the hose circumference at 23 +/- 2 C and 6.9 kPa pressure. Increase the coolant temperature to 93 +/- 2 C and pressurize to 172 kPa. After 8 +/- 0.25 h remeasure the circumference at 93 +/- 2 C and 172 kPa and calculate the percentage increase in
15、 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 than the test length shown below. Hose Test Centre Hole I.D., Length, Distance, Di
16、ameter, Mm mm mm mm 10 250 75 O.D.+ 1.5 mm 12.5 250 100 O.D.+ 1.5 mm15 300 150 O.D.+ 1.5 mm 20 450 180 O.D.+ 1.5 mm25 610 250 O.D.+ 1.5 mm 3.13 COVER ADHESION, min 2.5 kN/m (ASTM D 413, strip specimen, type A) 3.14 FLEXIBILITY AT -40 C No tube or (FLTM BN 102-01, except cover cracking use mandrel 10
17、X 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 (Unless otherwise shown on burst, leak or the Engineering Drawing or show any Engineering Specification) visible defects (For 25 mm I.D. and smaller) ENGINEERING MATERIAL SPECIFICATION
18、WSS-M96D14-A4Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 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 lengt
19、h 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). 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 wit
20、h 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 circulated through the hose during test. After running the test for 5 complete cycles test for chang
21、e 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 Cover Adhesion, min 2.0 kN/m (Test according to 3.13) 3.17 HOSE IDENTIFICATION (Unless otherwise
22、 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 producing hoses to this specification. No space between letters. Mandatory on hoses longer than 80 m
23、m 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 letters may be reduced to 3 mm. The following code format is recommended, but not mandatory:
24、 G 2 01 Wher: G = Plant Designation 2 = Year (single digit) 01 = Month (2-digit number) ENGINEERING MATERIAL SPECIFICATIONWSS-M96D14-A4Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5 5. GENERAL INFORMATION The information given below is provided for clarific
25、ation and assistance in meeting the requirements of this specification. 5.1 For information on currently approved engine coolants for use in the specification contact: Materials Technology Center, 15/GM-DO1-D Powertrain Operations Research and Engineering Center Engine Engineering Bldg Ford Motor Company Ltd P.O. Box 2053 Laindon, Basildon 21500 Oakwood Boulevard Essex SS15 6EE, England Dearborn MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
