1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2012 06 08 N Status Replaced by WSK-M4D645-A N. Benipal, NA 2008 02 26 Revised Returned back to A status, South America still uses 1980 05 14 CAJ2-878110-C5 Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC
2、Page 1 of 2 POLYETHYLENE, COPOLYMER, MOLDING COMPOUND ESA-M4D197-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a rigid high density polyethylene copolymer molding compound. 2. APPLICATION This specification was released originally for material used in bearing
3、s for applications such as tie rod linkage where low friction and resistance to stress cracking are desired. 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-M99P1
4、111-A). 3.1 COMPRESSION MOLDED TEST SPECIMEN (ASTM D 1928 - Procedure “C“ Cooling Rate) 3.1.1 All test values indicated herein are based on materials conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/ 5% relative humidity for 24 h prior to testing and tested under the same controlled con
5、ditions. 3.1.2 Specific Gravity 0.944 - 0.955 (ASTM D 792) 3.1.3 Flow Rate, max 0.4 g/10 min (ASTM D 1238, Condition “E“) 3.1.4 Melting Point, min 121 C (FLTM BO 021-02) 3.1.5 Tensile Strength at Yield, min 3200 psi (22.1 MPa) (ASTM D 638, Speed “C“, sample shall conform to dimensions of Die “C“ of
6、ASTM D 412.) Elongation at Break, min 150% 3.1.6 Flexural Modulus, min 150,000 psi (1.1 GPa) (ASTM D 790, Procedure “B“) ENGINEERING MATERIAL SPECIFICATION ESA-M4D197-A Copyright 2012, Ford Global Technologies, LLC Page 2 of 2 3.1.7 Impact Strength, Izod, min 2.0 ft lb/in (107 J/m) (ASTM D 256, notc
7、hed) 3.1.8 Brittleness Temperature, max -55 C (ASTM D 746, Procedure “C“) 3.1.9 Deflection Temperature, min 68 C (ASTM D 648, 66 psi (455 kPa), 1/8 x 1/2 in (3.2 x 12.7 mm) sample) 3.1.10 Environmental Stress, Crack Resistance, min 150 h (ASTM D 1693, F50) 3.2 MOLDED PARTS (Quality Conformance) 3.2.
8、1 Specific Gravity 0.940 - 0.952 (ASTM D 792) 3.2.2 Flow Rate, max 0.42 g/10 min (ASTM D 1238, Condition “E“) 3.2.3 Melting Point, min 121 C (FLTM BO 021-02) 3.3 PHYSICAL PROPERTIES Additional physical properties of the molded part may be specified on engineering performance specification when required. 3.4 COLOR As specified on engineering drawing
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