1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2008 02 06 N-STATUS No replacement named G. Kowalski 2005 01 28 Revised Inserted 3.0; Deleted 3.2.3, 3.3 & 4 1969 10 13 Released AZ1-970 Original/s/G.M. Wolf/E.P. DePalma Printed copies are uncontrolled Copyright 2008, Ford Global Technologies
2、 LLC Page 1 of 2 POLYETHYLENE, HIGH DENSITY - EXTRUSION GRADE- EXTERIOR ESB-M4D311-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high density, extrudable grade, precolored black polyethylene. 2. APPLICATION This specification was released originally for ma
3、terial used for exterior front airfoils or any other exterior part which will not be attached to the vehicle prior to paint repair operations and which will not be exposed to direct weathering and ultraviolet radiation. 3. REQUIREMENTS (Black extruded sheet stock) 3.0 STANDARD REQUIREMENTS FOR PRODU
4、CTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 DIE CUT TEST SPECIMENS 3.1.1 Color Black 3.1.2 Specific Gravity, min 0.945 (ASTM D 792) 3.1.3 Carbon Black Content, min 2.0% (ASTM D 1603) The resul
5、ts of this test are to be certified on each lot by the supplier. Quality Control will not conduct this test. 3.1.4 Flow Rate, max 0.35 g/10 min (ASTM D 1238, Condition “L“) 3.1.5 Tensile Properties (ASTM D 638, Speed “C“) Yield Strength, min 3,100 psi (21.4 MPa) Ultimate Elongation, min 100% ENGINEE
6、RING MATERIAL SPECIFICATIONESB-M4D311-A Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 2 of 2 3.1.6 Flexural Properties (ASTM D 790, 0.2 in (5 mm)/min) Yield Strength, min 3,000 psi (20.7 MPa) Modulus, min 100,000 psi (690 MPa) 3.1.7 Deflection Temperature, min (A
7、STM D 648) Stressed Perpendicular to Molecular 85 C Orientation at 66 psi (455 kPa) Stressed Parallel to Molecular 74 C Orientation at 66 psi (455 kPa) 3.1.8 Impact Strength, Izod, min (ASTM D 256, Method “A“) Notched Perpendicular to 8.0 ft lb/in Molecular Orientation (427 J/m) Notched Parallel to
8、1.9 ft lb/in Molecular Orientation (101 J/m) 3.1.9 Environmental Stress Cracking, min 8 h (ASTM D 1693) 3.1.10 Hardness - Rockwell “R“, min 45 (ASTM D 785) 3.1.11 Cold Impact Strength at -40 C, min 60 in-lb (6.8 J) Test Method: Place a Gardner Impact Tester (Model IG-1115) with a 1/2 in (13 mm) diam
9、eter steel impact head and 4 x 4 x 0.100 in (100 x 100 x 2.54 mm) extruded samples in a cold box operated at -40 C for 5 h. Remove impact tester and place on the floor or any suitable non-energy absorbing surface. Impact samples within 10 s after removal from cold box. No sample shall show any indication of cracking. 3.2 PARTS 3.2.1 Color Black 3.2.2 Physical Properties Specific requirements for physical properties of parts, when required, shall be specified on the engineering drawings.
