1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 24 N-STATUS No replacement named C. Mracna, NA 2006 08 24 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.10 & 4 1989 06 13 Released 369070-C2 (RD) K. Gribble F. Swanson JG Printed copies are uncontrolled Copyright 2010, Ford Global Tec
2、hnologies, LLC Page 1 of 6 HOSE, REINFORCED RUBBER, AUTOMATIC WSA-M96D26-A TRANSMISSION FLUID RESISTANT NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines a straight or formed synthetic rubber hose reinforced with a single ply of braided textile, with good resistance to automatic tran
3、smission fluid. 2. APPLICATION This specification was released originally for an automatic transmission oil cooler hose. The hose is resistant to long term exposure to automatic transmission fluid up to 150 C and air temperatures up to 125 C. For applications requiring air temperatures above 125 C,
4、consider WSD-M96D13-A. 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 a smooth bore synthetic rubber
5、 tube and high temperature and oil resistant synthetic rubber cover (see para 5.2). The tube shall be covered with a single ply of suitable braided reinforced textile. The hose may be coupled with a crimped metal end-fittings. 3.5 MATERIAL TESTING The following tests shall be performed on finished h
6、oses and/or test specimens cut from them. The test specimens shall be die-cut from the finished parts and buffed or slit to the required thickness where necessary. When not feasible, specimens cut from molded test slabs manufactured from the same material with an equivalent state of cure shall be us
7、ed. The test slabs shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.6 ORIGINAL PROPERTIES Tube Cover 3.6.1 Hardness, International 65 - 80 65 - 80 (ISO 1183, Method A/ASTM D 1415) 3.6.2 Hardness, Durometer A 65 - 80 65 - 80 (ISO 868/ASTM D 2240, instantaneous, plied-up speci
8、men) 3.6.3 Tensile Strength, MPa, min 9 9 (ISO 37/ASTM D 412, Die C) ENGINEERING MATERIAL SPECIFICATIONWSA-M96D26-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 6 3.6.4 Elongation, %, min 110 200 (ASTM D 412, Die C) 3.6.5 Ozone Resistance, Rating, max 0 0 (F
9、LTM BP 101-01, Procedure A or B) 3.6.6 Compression Set, %, max 60 65 (ISO 815/ASTM D 395, Method B, 70 h at 125 +/- 2 C) 3.7 AGED PROPERTIES 3.7.1 Heat Aged, Cover Only (ISO 188/ASTM D 573, 168 h at 150 +/- 2 C) Hardness Change 0 to +10 IRHD Tensile Strength Change, max -10% Elongation at Break Chan
10、ge, max -40% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7.2 Heat Aged, Cover Only (ISO 188/ASTM D 573, 1000 h at 125 +/- 2 C) Hardness Change 0 to 25 IRHD Tensile Strength Change, max -20 Elongation at Break Change, max -65 Visual Evaluation No surface tackin
11、ess or cracks when folded flat against itself. 3.7.3 Immersion in Currently Released Production Automatic Transmission Fluid, Tube Only (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) Hardness Change, max -15 IRHD Tensile Strength Change, max -50% Elongation at Break Change, max -65% Volum
12、e Change 0 to +35% Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATIONWSA-M96D26-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 6 3.7.4 Immersion in Currently Released Production Automatic Tran
13、smission Fluid, Tube Only (ISO 1817/ASTM D 471, 1000 h at 135 +/- 2C, see para 5.1) Hardness Change, max -15 IRHD Tensile Strength Change, max -60% Elongation at Break Change, max -85% Volume Change 0 to 35% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7.5 Imme
14、rsion in Oil IRM 903 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change, max -25 IRHD Tensile Strength Change, max -40% Elongation at Break Change, max -55% Volume Change, max 0 to +65% Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.8 FINISHED PART 3.8.1
15、 Burst Pressure, min 6.9 MPa (ASTM D 380) 3.8.2 Adhesion, min 1.4 N/mm (ASTM D 413, Strip Method, Type A) 3.8.3 Tensile Strength (ASTM D 380, 25 mm/minute) This requirement applies only when couplings are used with the hose. Assemblies must withstand a minimum pull of 1.1 kN without the couplings se
16、parating from the hose, leakage at coupling connection or rupture of the hose. 3.8.4 Low Temperature Flexibility, No breaks or Oil Aging/Cold Soak cracks Test Method: Hose assembly shall be filled with current production approved automatic transmission fluid (see Para 5.1), closed at both ends and h
17、eat aged at 150 +/- 2 C for 24 h. The aged assemblies, after cooling to 23 +/- 2 C, shall be conditioned at -40 +/- 1 C for 24 h. After conditioning and while in the cold box, the hose assembly shall be bent around a temperature conditioned mandrel, having a radius equal to the minimum bend radius o
18、f 10 times the I.D. Flexing shall be accomplished within 4 s. ENGINEERING MATERIAL SPECIFICATIONWSA-M96D26-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 6 3.8.5 Accelerated Impulse Test Test Method: Hose assemblies and/or uncoupled hose, where applicable sh
19、all be preconditioned by filling with current production approved automatic transmission fluid (see para 5.1), closed at both ends and heat aged at 150 +/- 2 C for 70 h prior to impulse testing. For initial qualification the aged hose assemblies must withstand 250,000 impulse cycles at maximum worki
20、ng pressure of 1.1 MPa without bursting or show any signs of failure. Hose assemblies removed from test stand and burst pressure tested shall not average more than 20% below the average of original results per para 3.8.1. Periodic certification testing thereafter shall require aged assemblies to wit
21、hstand 100,000 impulse cycles at maximum working pressure of 1.1 MPa without failure while maintaining temperatures of transmission fluid at 150 C and the ambient air chamber at 125 C. Burst strength values from hose assemblies after completion of 100,000 impulse cycles shall not average more than 1
22、5% below the average of original results (para 3.8.1 and 3.8.3). Impulse Test Conditions: Oil Temperature 150 +/- 3 C Ambient Temperature 125 +/- 5 C Cycle Rate 30 - 40/minute Cycle Data: Pressure Rise Time 0.20 +/- 0.02 s High Pressure Hold Time 0.65 +/- 0.02 s Pressure Drop 0.20 +/- 0.10 s Pressur
23、e Variation 0 - 1.10 MPa Hydraulic Fluid Currently Released Automatic Transmission Fluid (see para 5.1) 3.8.5.1 Oil and Heat Resistance After successful completion of 100,000 impulse cycles according to para 3.8.5, standardized ASTM specimens taken from the hose shall not exceed the following values
24、: Tube Cover Hardness Change, max -15 +15 Tensile Strength Change, % max -50 +35 Elongation at Break Change, % max -60 -65 ENGINEERING MATERIAL SPECIFICATIONWSA-M96D26-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 6 3.8.6 Resistance to Kinking Test Method:
25、Insert required length of hose on test fixture securing each end with metal clamps. When installing hose, it shall be bent within 5 s in the same plane and direction as its free state curvature. Place fixture in an oven at 120 +/- 2 C for 1 h. Remove fixture from oven and within 5 minutes pass a ste
26、el ball of specified diameter through hose installed on fixture. Ball must pass freely. I.D. Test Sample Length, Ball Diameter Typical Range min +/- 3.0 mm mm mm mm 7.1 - 8.7 300 3.20 +/- 0.05 8.8 - 10.1 350 3.95 +/- 0.05 12.1 - 13.3 450 5.5 +/- 0.05 Sample Selection: Production hose selected for th
27、e kink test should represent, as nearly as possible, minimum wall thickness. When recording results include wall thickness, ovality, and dimension “A“ (see above). This dimension is measured while sample is on the test fixture. 3.9 HOSE IDENTIFICATION The word transmission fluid and the coding descr
28、ibed below shall appear on the outer cover of the hose in contrasting color and repeated at intervals of 60 mm or less. Formed hose may be coded once per part. ENGINEERING MATERIAL SPECIFICATIONWSA-M96D26-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 6 Hose
29、 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. Mandatory on hoses longer then 80 mm only. c) Ford trademark on hoses longe
30、r then 150 mm. d) All of the above printing shall be clearly and legibly printed letters of 3.2 - 6 mm in height and proportionate width. When hose is less then 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 D
31、esignation 2 = Year (single digit) 01 = Week (2-digit number) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved transmission fluid for use in this specification
32、contact: Materials Laboratory 15/GM-DO1-D Transmission & Axle Engineering Research and Engineering Center Materials Engineering Ford Motor Company, Ltd Ford Motor Company Laindon, Basildon P.O. Box 2097 Essex SS15 6EE, England 36200 Plymouth Road Livonia, MI 48151, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia 5.2 HOSE CONSTRUCTION - ELASTOMERS Tube/Cover - Chlorosulfonated Polyethylene (CSM)/Chlorinated Poly-ethylene (CM) and/or CM/CSM.
