1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 13 N-STATUS Replaced by WSS-M4D938-A1 R. Lord 2005 01 25 Revised Inserted 3.0; Deleted 3.11 & 4 1969 06 05 Released (was XF-M4DX78), F6Y-249 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 2 POL
2、YPROPYLENE MOLDING COMPOUND, EXTRA HIGH IMPACT ESF-M4D298-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polypropylene molding compound. 2. APPLICATION This specification was released originally for material used for speedometer cable jacketing. 3. REQUIREME
3、NTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 SPECIFIC GRAVITY, min 0.900 (ASTM D 792) 3.2 TENSILE STRENGTH max load, min 3,000 psi (20.7 MPa) (ASTM D 638,
4、 Speed “C“) Elongation, max load, min 10% 3.3 FLEXURAL MODULUS 55,000 - 100,000 psi (ASTM D 790) (380 - 690 MPa) 3.4 IMPACT STRENGTH, Izod, min 16 ft lb/in (854 J/m) (ASTM D 256, notched) 3.5 HARDNESS - ROCKWELL “R“ 40 - 75 (ASTM D 785) 3.6 DEFLECTION TEMPERATURE, min At 66 psi (455 kPa) 85 C At 264
5、 psi (1820 kPa) 53 C 3.7 STIFFNESS IN FLEXURE 85,000 150,000 psi (ASTM D 747) (590 - 1040 MPa) ENGINEERING MATERIAL SPECIFICATION ESF-M4D298-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 2 3.8 MELTING POINT, min 160 C (FLTM BO 021-01) 3.9 FLOW RATE 0.5 - 0.8 g/10 min (ASTM D 1238, Condition “L“) 3.10 MOLDED OR EXTRUDED PARTS Specific requirements for physical properties of molded or extruded parts, when required, shall be specified on the engineering drawings.
