1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 09 11 Revised Named a different replacement, WSK-M4D673-A G. Kowalski 2006 05 03 N-STATUS Replaced by WSK-M4D648-A A. Reaume/M. Masserant 1971 07 16 Released (Was XF-M4DX93), F6A-174 Printed copies are uncontrolled Copyright 2007, Ford Gl
2、obal Technologies, LLC Page 1 of 2 NYLON (TYPE 66), 43% GLASS FIBER REINFORCED ESF-M4D335-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a type 66 nylon, reinforced with short glass fibers. 2. APPLICATION This specification was released originally for material
3、 used for the distributor breaker plate link and other applications where strength, stiffness, toughness, fatigue endurance, and creep resistance are required at high temperatures. NOTICE: This material absorbs and retains moisture. Part design and tolerances must accommodate changes in part dimensi
4、ons and physical properties due to moisture absorption or loss in the 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 M
5、aterial suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MOLDING COMPOUND 3.2.1 Melting Point 250 - 265 C (ASTM D 789) 3.2.2 Moisture Content, max 0.3% (ASTM D 789) 3.2.3 Glass Fiber Content, by weight 40 - 45% (ASTM D 258
6、4) 3.3 MOLDED 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. 3.3.3 Specific Gravity, min 1.46 (ASTM D 792) 3.3.4 Tensile Strength, min 28,000 psi (193
7、MPa) (ASTM D 638, 0.2 in (5 mm)/min) Elongation, min 2.0% ENGINEERING MATERIAL SPECIFICATIONESF-M4D335-APrinted copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 2 3.3.5 Flexural Modulus, min 1.5 x 106psi (10.3 GPa) (ASTM D 790) 3.3.6 Flexural Strength, min 38,000 psi (
8、262 MPa) (ASTM D 790) 3.3.7 Impact Strength, Izod, min 2.2 ft lb/in (117 J/m) (ASTM D 256, 1/4 x 1/2 in (6.4 x 12.7 mm) sample) 3.3.8 Deflection Temperature, min 250 C (ASTM D 648, 264 psi (1820 kPa), annealed specimens) 3.4 MOLDED PART 3.4.1 Color Natural or as specified on engineering drawing. 3.4
9、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. 3.4.3 Regrind and/or Blended Material Must meet Q101 Appendix D, or limits as specified on
10、 the engineering drawing. 3.4.5 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. . Specific Gravity, min 1.46 (ASTM D 792) . Melting Point 250 - 265 C (ASTM D 789) 5. GENERAL INFORMATION The in
11、formation given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 HARDNESS, ROCKWELL “M“ 120 5.2 SHEAR STRENGTH 13,500 psi (93 MPa) 5.3 COMPRESSIVE STRENGTH 35,000 psi (245 MPa) 5.4 COEFFICIENT OF LINEAR THERMAL EXPANSION 2.2 x 10-5/ C 5.5 IMPACT STRENGTH, IZOD, min (ASTM D 256, 1/4 in (6.4 mm) sample) At 23 C 2.7 ft lb/in (144 J/m) At -40 C 2.5 ft lb/in (133 J/m
