1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 03 N-STATUS Replaced by WSK-M4D672-A A. Reaume/M. Masserant 2005 01 26 Revised Inserted 3.0; Deleted 3.1, 3.4.2, 3.5.3, 3.6 & 4 1969 06 18 Released (Was XF-M4DX75) F6Y-253 Printed copies are uncontrolled Copyright 2006, Ford Global Tec
2、hnologies, LLC Page 1 of 3 NYLON (TYPE 6) MOLDING COMPOUND, NUCLEATED HEAT ESF-M4D305-A STABILIZED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a type 6 nylon molding compound which is nucleated for faster molding cycles and is heat stabilized. 2. APPLICATION
3、This specification was released originally for material used for molded alternator stator end insulator. 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 servic
4、e/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 Standard R
5、equirements For Production Materials (WSS-M99P1111-A). 3.2 HEAT STABILIZER ADDITIVE Ford Motor Company, at its option, may conduct the following heat stabilizer additive test on material/parts supplied to this specification. The stabilizer must be present as determined by one of the following tests:
6、 Test Method A: To a 10 mL ground glass stoppered graduate add 0.5 mL glacial acetic acid, 1.5 mL of 3% hydrogen peroxide solution (fresh) and a 1 mL of carbon tetrachloride. Place 20 g of nylon pellets and 40 g of distilled water in a beaker. Allow the water to boil gently for 5 min. Decant off the
7、 water into another beaker. Add 7 mL of this decanted water to the previously prepared test solution and shake the mixture vigorously for about 15 s. If the carbon tetrachloride which settles on the bottom is purple, the heat stabilizer system is present. Test Method B: Place 20 g of nylon pellets a
8、nd 50 g of distilled water in a beaker. Allow the water to gently boil for five minutes. Decant the water into another beaker. Add 40 mL of this decanted water to a 50 mL ground glass stoppered graduate. Add while stirring 3 mL of nitric acid, two drops of 1 N potassium permanganate solution, and 7
9、mL of carbon tetrachloride. Shake the mixture vigorously for about 15 s. If the carbon tetrachloride, which settles to the bottom, is brown or purple, the heat stabilizer additive is present. 3.3 MOLDING COMPOUND 3.3.1 Melting Point 210 - 225 C (ASTM D 789) ENGINEERING MATERIAL SPECIFICATIONESF-M4D3
10、05-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.3.2 Specific Gravity 1.10 - 1.18 (ASTM D 792) 3.3.3 Moisture Content, max 0.3% (ASTM D 789) 3.3.4 Relative Viscosity, min 30 (ASTM D 789) 3.4 MOLDED TEST SPECIMEN The following requirements are intended f
11、or 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 specimens which immediately upon removal from mold are sealed
12、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. 3.4.3 Tensile Strength, min 69 MPa (ASTM D 638, 50 mm/min) Elongation,
13、ultimate, min 5.0% 3.4.4 Impact Strength, Izod, min 21.4 J/m (ASTM D 256) 3.4.5 Deflection Temperature, min (ASTM D 648) At 0.45 MPa 185 C At 1.82 MPa 68 C 3.4.6 Relative Viscosity, min 30 (ASTM D 789) 3.4.7 Heat Stability (ASTM D 3045, 24 h at 185 +/- 1 C) Tensile Strength, min 62 MPa (ASTM D 638,
14、50 mm/min) 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 porosity, warpage, heat scorch, checks, cracks, chipped edges and uneven surfaces. Shall also be free of other contamination. ENGIN
15、EERING MATERIAL SPECIFICATIONESF-M4D305-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.5.4 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. . Moist
16、ure Content, as received 1.00 - 3.00% (ASTM D 789 or FLTM BO 024-02) Processor may determine moisture added to dry parts by a weight gain method. . Melting Point 210 - 225 C (ASTM D 789) . Relative Viscosity, min 30 (ASTM D 789) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Moisture Content 0.3% 2.5% 5.1 FLEXURAL MODULUS, GPa 3 1.3 5.2 IMPACT STRENGTH, Izod, J/m 37 133 5.3 TENSILE STRENGTH, MPa 90 78
