1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.12, 3.13 & 4 1992 03 16 Revised para 3.7.1 NE01E10127076046 E. Duda1990 09 14 Released NE01E10000474082 E. DudaPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies,
2、LLC Page 1 of 4 HYDROGENATED NITRILE (HNBR) RUBBER WSE-M2D451-A 1. SCOPE The material defined by this specification is a hydrogenated acrylonitrile butadiene (HNBR) rubber for use where resistance to heat, coolant, water and low temperature flexibility are required. 2. APPLICATION This specification
3、 was released originally for material used for water pump seals. 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 MATERIAL TESTING 3.4.1 Preparati
4、on of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished 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 dimensi
5、ons: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORIGINAL PROPERTIES 3.5.1 Density 1.0 - 1.4 g/cm3(ISO 1183, Method A/ASTM D 297) 3.5.2 Hardness, International 65 - 75 (ISO 48/ASTM D 1415) 3.5.3 Hardness, Durometer A 67 - 77 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers sha
6、ll not be used) 3.5.4 Tensile Strength, min 16 MPa (ISO 37/ASTM D 412, Die C) 3.5.5 Elongation at Break, min 275% (Test Method according to para 3.5.4) 3.5.6 Modulus at 100% Elongation 3.5 - 7.6 MPa (Test Method according to para 3.5.4) ENGINEERING MATERIAL SPECIFICATIONWSE-M2D451-APrinted copies ar
7、e uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 4 3.5.7 Tear Strength, min 20 kN/m (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.5.8 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.5.9 Compression Set, max 38% (ISO 815/ASTM D 395, Method B, except 25% c
8、ompression, plied-up or button specimens, 70 h at 150 +/- 2 C) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) 3.6.1 Hardness Change, max +17 3.6.2 Tensile Strength Change, max -20% 3.6.3 Elongation Change, max -50% 3.6.4 Visual Evaluation No surface tackiness or c
9、racks when folded flat against itself. 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 135 +/- 2 C) 3.7.1 Hardness Change, max +12 3.7.2 Tensile Strength Change, max +/- 10% 3.7.3 Elongation Change, max -35% 3.7.4 Visual Evaluation No surface tackiness or cracks when folded fl
10、at against itself. 3.8 IMMERSION IN OIL NO.1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.1 Hardness Change, max -10 3.8.2 Tensile Strength Change, max +20% 3.8.3 Elongation Change, max -25% 3.8.4 Volume Change, max +10% 3.8.5 Visual Evaluation No surface tackiness or cracks when folded flat agai
11、nst itself. ENGINEERING MATERIAL SPECIFICATIONWSE-M2D451-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.9 IMMERSION IN OIL NO.3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.9.1 Hardness Change -24 3.9.2 Tensile Strength Change, max -25% 3.9.3 Elongation
12、 Change, max -25% 3.9.4 Volume Change +38% 3.9.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.10 IMMERSION IN CURRENTLY RELEASED ENGINE COOLANT 50/50% V/V MIXTURE WITH DISTILLED WATER, TUBE ONLY (ISO 1817/ASTM D 471, 168 h at 125 +/- 2 C, see para 5.1) 3.10.1 H
13、ardness Change +8 3.10.2 Tensile Strength Change, max -15% 3.10.3 Elongation Change, max +/- 15% 3.10.4 Volume Change +8% 3.10.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself) 3.11 COLD TEST (FLTM BP 106-03) Condition for 5 h at -40 +/- 2 C, then bend around a temp
14、erature conditioned 25 mm dia mandrel. 3.11.1 As received No cracks 3.11.2 After aging per para 3.6 No cracks ENGINEERING MATERIAL SPECIFICATIONWSE-M2D451-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION The information given below is
15、provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved service fluids and other materials required for use in this specification contact: Materials Laboratory 15/GM-D01-D Transmission & Axle Engineering Research and Engi
16、neering Centre Materials, Fasteners & Friction Ford Motor Company Ltd Ford Motor Company Laindon, Basildon P.O. Box 2097 Essex SS15 6EE, England 36200 Plymouth Road Dearborn, MI 48151, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
