1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 24 N-STATUS No replacement named C. Mracna, NA 2006 08 25 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.14 Corrected numbering 3.12 1989 11 17 Released SM/ER 7149 TC B. Hennessey Printed copies are uncontrolled Copyright 2010, Ford Gl
2、obal Technologies, LLC Page 1 of 3 TUBE, CHLOROSULPHONATED POLYETHYLENE (CSM) WSD-M96D27-A RUBBER, MODERATE OIL RESISTANCE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a chlorosulphonated polyethylene rubber tube with good resistance to ozone, vacuum collapse
3、and tearing. It is capable of continuous operation at temperatures up to 110 C and withstanding peak temperatures up to 130 C. The material remains serviceable at -30 C and is moderately resistant to hot oil but has poor resistance to highly aromatic and oxygenated fuels. 2. APPLICATION The material
4、 was released originally for use as engine compartment tubing for emission control, vacuum and crankcase ventilation systems where exposure to fuel vapors and hot oil will be minimal or where the resultant dimensional changes and softening are not detrimental. If prolonged resistance to fuel vapors
5、and/or hot oil at temperatures exceeding 110 C is required then WSD-M96D9-A/A2 should be considered. 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).
6、3.4 TUBE CONSTRUCTION The tube shall consist of a single extrusion or molding of chlorosulphonated polyethylene rubber without internal or external fabric reinforcement. 3.5 MATERIAL TESTING 3.5.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished
7、parts. When not feasible, specimens cut from 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 3.6 ORIGINAL PROPERTIES 3.6.1 Hardness, International
8、65 - 75 IRHD (ASTM D 1415, macro) ENGINEERING MATERIAL SPECIFICATIONWSD-M96D27-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 3 3.6.2 Hardness, Durometer A (ISO 868/ASTM D 2240, instantaneous, 65 - 75 plied-up specimen. Hand held durometers shall not be used
9、) 3.6.3 Tensile Strength, min 10.0 MPa (ISO 37/ASTM D 412, Die C) 3.6.4 Elongation at Break, min 200% (Test Method according to 3.6.3) 3.6.5 Modulus at 100% Elongation, 3.5 5.5 MPa (Test Method according to 3.6.3) 3.6.6 Tear Strength, min 20 kN/m (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C)
10、3.6.7 Compression Set, max 60% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 100 +/- 2 C) 3.6.8 Ozone Resistance, max Rating 0 (FLTM BP 101-01) 3.6.9 Extractables, max (ASTM D 297) 3.6.9.1 Total Extract 15% 3.6.9.2 Waxy Hydrocarbons 0.75% 3.7 HEAT AGED (ISO 188/A
11、STM D 573, 150 +/- 50 air changes/h, 1000 h at 110 +/- 2 C) Hardness, International, Change, max +15 IRHD Tensile Strength Change, max -10% Elongation at Break Change, max -50% 3.8 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 130 +/- 2 C) Hardness, International, Change, max +15
12、 IRHD Tensile Strength Change, max -10% Elongation at Break Change, max -50% ENGINEERING MATERIAL SPECIFICATIONWSD-M96D27-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 3.9 IMMERSION IN ASTM OIL No.3 (ISO 1817/ASTM D 471, 168 h at 130 +/- 2 C) Hardness, In
13、ternational, Change, max -35 IRHD (35 IRHD, min) Tensile Strength Change, max -60% Elongation at Break Change, max -55% Volume Change, max +70% 3.10 IMMERSION IN ASTM FUEL C (ISO 1817/ASTM D 471, 70 h at 23 +/- 2 C) Hardness, International, Change, min -35 IRHD (35 IRHD, min) Tensile Strength Change
14、 max -70% Elongation at Break Change, max -60% Volume Change, max +100% 3.11 IMMERSION IN ASTM FUEL C +15% METHANOL (ISO 1817/ASTM D 471, 70 h at 23 +/- 2 C) Hardness, International, Change, min -35 IRHD (35 IRHD, min) Tensile Strength Change, max -75% Elongation at Break Change, max -65% Volume Ch
15、ange, max +100% 3.12 FLEXIBILITY AT -30 C No breaks or cracks Test Method: Condition a 300 mm straight length of tube for 24 h at - 30 +/- 1 C then bend around a similarly conditioned mandrel 10X the nominal OD of the tube. Bending shall be completed within 1 s. Test after the following exposures: 3
16、12.1 Original 3.12.2 Heat Aged according to para. 3.7 3.12.3 Heat Aged according to para. 3.8 3.13 VACUUM COLLAPSE RESISTANCE, max 10% Test Method: Take a 300 mm length of tube, plug one end and apply a vacuum of 80 kPa for 5 minutes. Measure any collapse of the outside diameter and quantify as a percentage of original outside diameter.
