1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 09 12 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.17, 3.18 & 4 1994 10 20 Revised NE01E10127076145 E. Duda 1994 03 10 Released NE01E10127076120 E. Duda Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page
2、 1 of 4 HOSE, SILICONE (VMQ), HIGH TEMPERATURE, OIL RESISTANT WSE-M96D39-A 1. SCOPE The material defined by this specification is a long life, high temperature oil resistant, ozone resistant, moderate to low pressure silicone rubber hose with ability to service high temperature up to 275 C. 2. APPLI
3、CATION The specification was released originally for material used as components of the exhaust air supply hose. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Material (WSS-M9
4、9P1111-A). 3.4 CONSTRUCTION The hose shall consist of a silicone elastomeric tube and cover, reinforced with one or more plies of braided, knitted, spiral, or woven para aramid fabric or yarn. 3.5 MATERIAL TESTING 3.5.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die
5、-cut from the finished parts. When not feasible, specimens cut from molded test sheets manufactured from the same material and with equivalent state of 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 Tube Cover 3.6 ORIGINA
6、L PROPERTIES 3.6.1 Hardness, Durometer A 55 - 65 50 - 65 (ISO 868/ASTM D 2240 instantaneous, plied-up specimen Hand held durometers shall not be used) 3.6.2 Tensile Strength, MPa, min 7.0 7.0 (ISO 37/ASTM D 412, Die C) 3.6.3 Elongation at Break, min 250 2750 (Test Method according to para 3.6.2) ENG
7、INEERING MATERIAL SPECIFICATION WSE-M96D39-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 3.6.4 Modulus at 100% Elongation (Test Method according to para 3.6.2) Elongation, MPa, min 1.5 - 4.0 1.5 - 4.0 (ASTM D 412, Die C) 3.6.5 Silicone Volatiles, max 0.3
8、5% (FLTM AV 102-01, as received at Ford Motor Company) 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 275 +/- 2 C) 3.7.1 Hardness Change, max +15 +18 3.7.2 Tensile Strength Change, % max -52 -52 3.7.3 Elongation Change, % max -65 -60 3.7.4 Visual Evaluation No surface tackines
9、s or cracks when folded flat against itself. 3.8 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 218 +/- 2 C) 3.8.1 Hardness Change, max +20 +20 3.8.2 Tensile Strength Change, % max -35 -40 3.8.3 Elongation Change, % max -40 -55 3.8.4 Visual Evaluation No surface tackiness or crac
10、ks when folded flat against itself. 3.9 IMMERSION IN CURRENTLY RELEASED ASTM IRM 902 Oil, TUBE ONLY (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, see Para. 5.1) 3.9.1 Hardness Change, max -12 3.9.2 Tensile Strength Change, max -35% 3.9.3 Elongation Change, max -30% 3.9.4 Volume Change, max +16% No sur
11、face tackiness or cracks when folded flat against itself. ENGINEERING MATERIAL SPECIFICATION WSE-M96D39-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.10 OZONE RESISTANCE, COVER, max Rating 0 (FLTM BP 101-01, Procedure A or B) 3.11 BURST PRESSURE AFTER
12、1000 h at 218 C (ASTM D 380, except for molded hose test on full hose, for straight hose use 250 mm length) Hose I.D. Burst Pressure, min 41 mm 1.0 MPa 3.12 COMPRESSION SET, max 78% (FLTM BP 108-06, 168 h at 204 +/- 2 C) 3.13 ADHESION, min (ASTM D 413, strip specimen, type A) Cover to Tube 1.7 kN/m
13、3.14 FLEXIBILITY AT -40 C AFTER No cracking of tube or cover HEAT AGING 1000 h at 218 C (FLTM BN 102-01, except use mandrel 10x nominal I.D.) 3.15 RESISTANCE TO KINKING (For 25 mm I.D. and smaller) Applies to formed and straight hoses containing straight lengths equal to or greater then the test len
14、gth shown below. The hose sample shall be stabilized at room temperature (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. With hose bent through 180 and inserted in
15、 the fixture, with each end of the test length flush with the opposite side, the sample shall show no visible evidence of buckling and shall pass a steel ball freely through the sample hose. Hose Test Center Hole Ball I.D., Length, Distance, Diameter, Diameter, mm mm mm mm mm 25 450 8 x I.D. O.D.+1.
16、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 3.16 SOURCE IDENTIFICATION (NAAO 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. assigned color thread in the knit or braid reinforcemen
17、t. The polymer stripe may be used with either above permanent identifications. ENGINEERING MATERIAL SPECIFICATION WSE-M96D39-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The information given below is provided for clarification an
18、d assistance in meeting the requirements of this specification. 5.1 For information on currently approved engine coolants for use in this specification contact: Materials Laboratory 15/GM-DO1-D Fluids 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 41821 USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd. Princes Highway, Norlane Victoria 3214, Australia 5.2 RECYCLING CODE VMQ