1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 03 N-STATUS Replaced by WSK-M4D742-A A. Reaume/M. Masserant 2005 02 03 Revised Inserted 3.0; Deleted 3.1, 3.4.1, 3.4.2, 3.5.3, 3.6 & 4 1971 08 24 Released COA1-CSA2-969285-4 Printed copies are uncontrolled Copyright 2006, Ford Global T
2、echnologies, LLC Page 1 of 3 NYLON (TYPE 6), HEAT STABILIZED - FLEXIBLE - ESA-M4D331-A EXTRUSION GRADE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat stabilized flexible type 6 nylon, suitable for extrusion applications. 2. APPLICATION This specification
3、was released originally for material used as an outer jacket for transmission shift cables. 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 en
4、vironment. 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 Requirements F
5、or 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 as determined by one of the following tests: Test Method A: T
6、o 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 water into anoth
7、er 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 and 50 g of distil
8、led 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 mL of carbon tetr
9、achloride. 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 SPECIFICATIONESA-M4D331-APrinted copie
10、s are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.3.2 Moisture Content, max 0.20% (FLTM BO 024-02) 3.3.3 Relative Viscosity, min 45 (ASTM D 789) 3.3.4 Extractables 8.0 - 13.0% Test Method: Dry pellets in vacuum (approximately 91 kPa) at 82 +/- 3 C for 24 h. Weigh sample
11、and reflux with water for 7 days. Again vacuum dry as above and reweigh sample. % Extractables = Initial Weight - Final Weight x 100 Initial Weight 3.4 MOLDED TEST SPECIMEN The following requirements are intended for initial source qualifications, and Initial Sample Inspection Report. These will be
12、rechecked at intervals specified by Quality Assurance. 3.4.3 Melting Point 210 - 225 C (ASTM D 789 or FLTM BO 021-02) 3.4.4 Specific Gravity 110 - 1.18 (ASTM D 792) 3.4.5 Moisture Content, as molded, max 0.20% (FLTM BO 024-02) 3.4.6 Relative Viscosity, min 40 (ASTM D 789) 3.4.7 Tensile Strength at Y
13、ield, min 48 MPa (ASTM D 638, 50 mm/min) Elongation at Yield, min 28% 3.4.8 Flexural Modulus, max 1.3 GPa (ASTM D 790, 6.4 x 12.7 mm specimen) 3.4.9 Flexural Strength, min 41.4 MPa (ASTM D 790, 6.4 x 12.7 mm specimen) 3.4.10 Impact Strength, Izod, min 75 J/m (ASTM D 256, 6.4 mm specimen width) 3.4.1
14、1 Deflection Temperature, min (ASTM D 648, 12.7 x 3.2 mm specimen) At 0.45 MPa 143 C At 1.82 MPa 46 C ENGINEERING MATERIAL SPECIFICATIONESA-M4D331-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 enginee
15、ring 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. 3.5.4 The following requirements will be used as acceptance criteria for molde
16、d parts. The tests indicated will be conducted by Ford Motor Company at its option. . Specific Gravity 1.10 - 1.18 (ASTM D 792) . Melting Point 210 - 225 C (ASTM D 789 or FLTM BO 021-02) . Relative Viscosity, min 40 (ASTM D 789) . Heat Stabilizer Additive Must be present (Same test and procedure as in para 3.2)
