1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 04 27 N-STATUS Replaced by WSK-M4D648-A; Inserted 3.0; Deleted 3.1, 3.6 & 4 A. Reaume/M. Masserant 1985 09 07 CDP1-RD-533311 3.4.3, 3.4.6, Revised 1981 08 14 CE3K-RD63100-E Supp. 26 Released Printed copies are uncontrolled Copyright 2006,
2、 Ford Global Technologies, LLC Page 1 of 3 NYLON (TYPE 66) COPOLYMER, HEAT STABILIZED ESE-M4D428-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a type 66 nylon based copolymer molding compound which exhibits high flexibility, high impact and is heat stabilized
3、. 2. APPLICATION This specification was released originally for material used for the extrusion of vacuum tubing. 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 t
4、he service/assembly environment. Information on this material 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 S
5、tandard Requirements For Production Materials (WSS-M99P1111-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: Ash 1 g sample in a cover
6、ed porcelain crucible (size 17H is suitable) using a muffle furnace at a temperature of 500-520 C. Be certain temperature does not exceed 530 C. Overheating will volatilize the stabilizer. Allow the crucible to cool to room temperature and then add 1-2 cc of 5 molar hydrochloric acid, swishing to wa
7、sh sides of crucible with acid. Evaporate to dryness, preferably on a steam bath or by very gentle heating with a low flame. Do not overheat. Dissolve the stabilizer by warming in 3-4 drops of distilled water. Note: Greenish yellow color may occur at this point, which indicates the presence of a hea
8、t stabilizer. If the color does not occur. proceed as follows: Withdraw by means of a capillary tube and place on a piece of #40 Whatman filter paper. Add directly 2-3 drops of a 5% solution of benzoin oxime in absolute ethanol (color complexing agent). Hold the filter paper over concentrated ammoni
9、um hydroxide for 2 min. A faint greenish yellow color indicates the presence of a heat stabilizer. It is imperative to use controls of stabilized and non-stabilized nylons, because color is weak and can be interpreted incorrectly. It is also very important to avoid any possibility of contamination.
10、ENGINEERING MATERIAL SPECIFICATIONESE-M4D428-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.3 MOLDING COMPOUND 3.3.1 Melting Point 250 - 265 C (ASTM D789)3.3.2 Specific Gravity 1.06 - 1.10 (ASTM D792)3.3.3 Moisture Content, max 0.20% (ASTM D789) 3.4 MOLD
11、ED TEST SPECIMEN The following requirements are intended for initial source qualifications, and Initial Sample Inspection Report. These will be rechecked at intervals specified by Quality Assurance. 3.4.1 Conditioning All specimens are to be dry as molded. Dry as molded specimens are defined as spec
12、imens which immediately upon removal from mold are sealed in containers that are impermeable to water vapor (maximum specimen moisture content 0.30%). No moisture shall be intentionally added to reach this level. Condition specimens a minimum of 24 h in sealed containers at 23 +/- 2 C. 3.4.2 Test Co
13、nditions Conduct tests in the standard laboratory atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4.3 Tensile Strength, min 50 MPa (ASTM D 638, 50 mm/min) Elongation, Ultimate, min 25% (AST
14、M D 638, 50 mm/min) 3.4.4 Flexural Modulus, max 2.1 GPa (ASTM D790) 3.4.5 Impact Strength, Izod, min 100 J/m (ASTM D256) 3.4.6 Heat Deflection Temperature, min 65 C (ASTM D 648, 1.82 MPa) 3.4.7 Heat Stability (ASTM D 3045, 72 h at 204 +/- 2 C) Tensile Strength, min 90% of original (ASTM D 638, 50 mm
15、/min) ENGINEERING MATERIAL SPECIFICATIONESE-M4D428-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.5 MOLDED PART 3.5.1 Color Natural or as specified on engineering drawing 3.5.2 Appearance Shall be uniform in density, texture and finish, free of visible p
16、orosity, 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 Appendix D, or limits as specified on the engineering drawing. 3.5.4 Additional Requirements Specific requirements for physical properties of molded or extruded parts shall be specified on the engineering drawing and/or engineering part specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawing.
