1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 24 N-STATUS No replacement named C. Mracna, NA 2003 08 29 Activated B Hennessey Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 1 of 5 HOSE, EPDM RUBBER, RAYON OR POLYESTER REINFORCED, WSS-M96D47-A1
2、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 heater hose with improved resistance to compression set and low extractable Zinc compounds content. 2. APP
3、LICATION 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-up of zinc-rich material in the radiator core and the de-gas bottle. The hose will withstand coolant and a
4、mbient 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 system, WSD-M96D14-A3 can be used. If resistance to ambient air or coolant temperatures above 120 C is required
5、, 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. However, this specification should not be used for vehicles manufactured for sale in North America. (Contact Materi
6、als Engineering for selection advice). 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 HOSE CONSTRUCTION The hose shall consist of an inner tube
7、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. 3.3 MATERIAL TESTING 3.3.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. Wh
8、en 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-M96D47-A1 Printed cop
9、ies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 2 of 5 3.4 ORIGINAL PROPERTIES - HOSE COVER AND TUBE 3.4.1 Hardness, International Tube 65 - 75 (ISO 48/ASTM D 1415) Cover 60 - 70 3.4.2 Tensile Strength, min 7 MPa (ISO 37/ASTM D 412, Die C) 3.4.3 Elongation at Break, min Tube
10、 225% (Test method according to 3.6.2) Cover 250% 3.4.4 Modulus at 100% Elongation, min 2.5 - 5.0 MPa (Test method according to 3.6.2) 3.4.5 Ozone Resistance, Cover, max Rating 0 (FLTM BP 101-01, Procedure A or B) 3.5 HEAT AGED (ISO 188/ASTM D 573, 150 +/- air changes/h, 1000 h at 120 +/- 2 C) Hardn
11、ess Change, max + 20 Tensile Strength Change, max - 15% Elongation at Break Change, max - 65% 3.6 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 Brea
12、k Change, max - 45% Volume Change - 10 to + 15% 3.7 EXTRACTABLE ZINC COMPOUNDS, max 0.1% (FLTM BP 108-09) ENGINEERING MATERIAL SPECIFICATIONWSS-M96D47-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 3 of 5 3.8 BURST PRESSURE, min (Unless otherwise shown on the
13、Engineering Drawing or Engineering Specification, ASTM D 380, except for molded hose test on full hose, for straight hose use 250 mm length) Hose I.D. Burst 41 mm 0.5 MPa 3.9 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
14、 filled 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 re-measure the circumference at 93 +/- 2 C and 172 kPa and calculate the percentage incre
15、ase in circumference. 3.10 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 Center Hole I.D. Length Distance
16、 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 3.11 COVER ADHESION, min 2.5 kN/m (ASTM D 413, strip specimen, type A) 3.12 FLEXIBILITY AT - 40 C No tube or (FLTM BN 102-01, except cover cracking use mandr
17、el 10X nominal I.D.) ENGINEERING MATERIAL SPECIFICATIONWSS-M96D47-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 4 of 5 3.13 COMPRESSION SET, max 70% (FLTM BP 108-06, 24 h at 120 +/- 2 C) 3.14 IMPULSE STRENGTH Shall not burst, leak (Unless otherwise shown on o
18、r show any visible the Engineering Drawing or defects Engineering Specification) (For 25 mm I.D. and smaller) 3.14.1 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 tota
19、l 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). 3.14.2 Test Procedure The samples shall be subjected to a total of 200 internal pressure pulses at a rate of 6 to 8 pressure cycles/
20、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 circulated through the hose during test. After running the test for 5 complete cycles test fo
21、r 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 3.14.3 Burst Pressure Change, max - 20% (Test according to 3.12) 3.14.4 Cover Adhesion, min 2.0 kN/m (Test according to 3.13) 3.15 HOSE IDENTIFICATION (Unless o
22、therwise 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 t
23、han 80 mm only. ENGINEERING MATERIAL SPECIFICATIONWSS-M96D47-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 5 of 5 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
24、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: G 2 01 Where: G = Plant Designation 2 = Year (single digit) 01 = Month (2-digit number) 4. GENERAL INFORMATION The information given below is provided f
25、or clarification and assistance in meeting the requirements of this specification. 4.1 For information on currently approved engine coolants for use in the specification contact: Materials Technology Centre, GB15/GM Powertrain Operations Research and Engineering Centre 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
