1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2008 02 06 N-STATUS Replaced by WSS-M4D955-A; Inserted 3.0; Deleted 3.1, 3.12 & 4 G. Kowalski 1984 10 05 Revised Released UP2-106B-8 1980 09 10 Released TK2-031S-20 Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC
2、Page 1 of 2 POLYETHYLENE, HIGH DENSITY INJECTION MOLDING COMPOUND ESL-M4D414-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high density polyethylene with a narrow molecular weight distribution. 2. APPLICATION This specification was released originally for L
3、ight Truck fuel tank impact shields. 3. REQUIREMENTS All tests are to be performed on specimens prepared from molded parts only. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M
4、99P1111-A). 3.2 DENSITY, min 0.950 g/cm3(ASTM D 792) 3.3 MELT INDEX 2.5 - 4.0 g/10 min (ASTM D 1238, 190 C, 2.16 kg) 3.4 MELTING POINT, min 127 C (ASTM D 3417, Differential Scanning Calorimetry) 3.5 TENSILE STRENGTH, min 19.3 MPa (ASTM D 638, Type I specimen, 50 mm/min test speed) 3.6 ELONGATION, mi
5、n 650% (ASTM D 638, Type I specimen 50 mm/min test speed) 3.7 IMPACT STRENGTH, GARDNER, min (FLTM BO 117-02) 3.7.1 At 23 +/- 2 C 13.6 J 3.7.2 At -30 +/- 2 C 13.6 J ENGINEERING MATERIAL SPECIFICATIONESL-M4D414-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 2
6、 3.8 IMPACT STRENGTH, TENSILE, min (ASTM D 1822, Type S specimen) 3.8.1 At 23 +/- 2 C 73.5 kJ/m23.8.2 At -30 +/- 2 C 73.5 kJ/m23.9 HARDNESS, DUROMETER D 60 - 65 (ASTM D 2240) 3.10 ENVIRONMENTAL STRESS CRACK RESISTANCE, min 8 h (ASTM D 1693, Fx50, 3.2 mm thick specimen) 3.11 FLEXURAL MODULUS, min 1000 MPa (ASTM D 790)
