1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 03 N-STATUS Replaced by WSK-M4D673-A A. Reaume/M. Masserant 2005 01 20 Revised Inserted 3.0; Deleted 3.1, 3.4.1, 3.4.2, 3.5.4, 3.6 & 4 1972 04 20 Released E3B-426738 Printed copies are uncontrolled Copyright 2006, Ford Global Technolog
2、ies, LLC Page 1 of 2 NYLON (TYPE 66), 33% GLASS FIBER REINFORCED - ESE-M4D287-B HEAT STABILIZED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a virgin heat stabilized type 66 nylon, reinforced with glass fibers. 2. APPLICATION This specification was released or
3、iginally for material used as an oil seal on valve stems. NOTICE: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. Information on this mat
4、erial with respect to moisture should be obtained from the responsible PEO Materials Engineering Department. 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
5、111-A). 3.2 HEAT STABILIZER ADDITIVE Ford Motor Company, at its option, may conduct following heat stabilizer additive test on material/parts supplied to this specification. The stabilizer must be present. Test Method: Boil 10 g of molded specimen in 50 mL of distilled water for 30 min. Decant and a
6、dd while stirring, one drop of nitric acid to the filtrate, followed by 3 drops of 10% silver nitrate. The formation of a precipitate indicates the presence of heat stabilizer. An optional method may be used if agreed upon by the supplier and the affected product engineering office. 3.3 MOLDING COMP
7、OUND 3.3.1 Melting Point 250 - 265 C (ASTM D 789) 3.3.2 Moisture Content, max 0.20% (ASTM D 789) 3.3.3 Glass Fiber Content, by weight 30.0 - 35.0% (ASTM D 2584) 3.4 MOLDED TEST SPECIMEN The following requirements are intended for initial source qualifications, and Initial Sample Inspection Report. T
8、hese will be rechecked at intervals specified by Quality Assurance. ENGINEERING MATERIAL SPECIFICATIONESE-M4D287-BPrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 2 3.4.3 Specific Gravity 1.38 - 1.42 (ASTM D 792) 3.4.4 Tensile Strength, min 170 MPa (ASTM D 638,
9、 5 mm/min) 3.4.5 Flexural Modulus, min 7.5 GPa (ASTM D 790) 3.4.6 Impact Strength, Izod, min (ASTM D 256, 12.7 mm sample width x 12.7 mm sample thickness) Natural 100 J/m Pigmented 85 J/m 3.4.7 Deflection Temperature, min 240 C (ASTM D 648, 1820 kPa) 3.5 MOLDED PART 3.5.1 Color Natural or as specifi
10、ed on engineering drawing. 3.5.2 Appearance Shall be uniform in density, texture and finish, free of visible porosity, warpage, heat scorch, checks, cracks, chipped edges and uneven surfaces. They shall also be free of other contamination. 3.5.3 Regrind and/or Blended Material Must meet Q101 Appendi
11、x D, or limits as specified on the engineering drawing. 3.5.5 The following requirements will be used as acceptance criteria for molded parts. The tests indicated will be conducted by Ford Motor Company at its option. . Moisture Content, as received 1.25 - 2.50% or as (ASTM D 789) specified on engin
12、eering drawing 3.5.6 Valve Stem Seals Only 3.5.6.1 Impact Resistance As specified on (FLTM 021-04, dry 1 h at engineering drawing 177 +/- 3 C cool to room temperature in a moisture free container before testing) 3.5.6.2 Hot Strength, travel max As specified on engineering drawing Test Method: Put a
13、seal on a clean rod with a surface finish of 18 RMS maximum and a diameter as specified on engineering drawing, place a weight equal to 500 times the of the seal on top. Heat the assembly for 1 h at 177 +/- 3 C in an air circulating oven and then cool for 1 h at room temperature. Repeat for 3 cycles. Measure travel of seal on the rod.
