1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 13 N-STATUS Replaced by WSS-M4D638-B R. Lord 2005 05 27 Revised Inserted 3.0; Deleted 3.2.10, 3.3 & 4 1977 07 06 Released CBG2-766983-C5 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 2 POLYPRO
2、PYLENE MOLDING COMPOUND ESA-M4D371-A ULTRAVIOLET STABILIZED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a precolored, medium flow, medium impact, ultraviolet stabilized grade of polypropylene. 2. APPLICATION This specification was released originally for mate
3、rial used for steering wheels. 3. REQUIREMENTS 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 APPEARANCE The color, pattern, grain and finish of parts shall be
4、specified on the engineering drawing. 3.2 MOLDED TEST SPECIMENS 3.2.1 Specific Gravity, min 0.90 (ASTM D 792) 3.2.2 Flow Rate 2 - 6 g/10 min (ASTM D 1238, Condition “L“) 3.2.3 Tensile Strength, min 23.5 MPa (ASTM D 638, 50 mm/min) Elongation at Break, min 100% 3.2.4 Flex Modulus, min 965 MPa (ASTM D
5、 790) 3.2.5 Impact Strength, Izod, min 53 J/m (ASTM D 256, notched) ENGINEERING MATERIAL SPECIFICATION ESA-M4D371-A Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 2 3.2.6 Deflection Temperature, min (ASTM D 648) At 455 kPa 82 C At 1820 kPa 52 C 3.2.7 Hardness
6、 - Rockwell “R“, min 50 (ASTM D 785) 3.2.8 Water Absorption, max 0.1% (ASTM D 570, 24 h) 3.2.9 Melting Point, min 160 C (FLTM BO 021-01) 3.2.11 Fade (SAE J 1885) The material shall not stain, exhibit color tone change or change in hue, in accordance with rating 5 of the AATCC chart for measuring transference of color after 120 SFH exposure.
