1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 12 N-STATUS Replaced by ESB-M4D308-A R. Lord 2005 01 14 Revised Inserted 3.0; Deleted 3.4 & 4 1969 01 08 Released CAX2-917090 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 2 POLYPROPYLENE, GEN
2、ERAL PURPOSE - EXTRUSION GRADE ESA-M4D281-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polypropylene polymer or copolymer molding compound suitable for extrusion. 2. APPLICATION This specification was released originally for materials used for extruded ite
3、ms such as jacketing in cable assemblies. 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 MOLDED TEST SPECIMENS - BASE MATERIAL (Specimens prepar
4、ed per ASTM D 2146) 3.1.1 Specific Gravity 0.890 - 0.920 (ASTM D 792) 3.1.2 Flow Rate, max 2.5 g/10 min (ASTM D 1238, Condition “L“) 3.1.3 Melting Point, min 160 C (FLTM BO 021-02) 3.1.4 Tensile Strength, at yield, min 3,500 psi (24.2 MPa) (ASTM D 638, Speed “C“) Elongation, at max load, min 8.0% 3.
5、1.5 Flexural Modulus, min 110,000 psi (760 MPa) (ASTM D 790, Procedure “B“) 3.1.6 Impact Strength, Izod, min (ASTM D 256, specimen to be 2 in (50 mm) center section of Type I or III tensile bar) Notched 1.0 ft lb/in (53 J/m) Unnotched 20 ft lb/in (1070 J/m) ENGINEERING MATERIAL SPECIFICATION ESA-M4D
6、281-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 2 3.1.7 Deflection Temperature, min (ASTM D 648, 1/2 x 1/8 in (12.7 x 3.2 mm) specimen) At 66 psi (455 kPa) 77 C At 264 psi (1820 kPa) 44 C 3.2 MOLDED PARTS 3.2.1 Specific Gravity 0.890 - 0.920 (ASTM D 792)
7、 3.2.2 Flow Rate, max 2.5 g/10 min (ASTM D 1238, Condition “L“) 3.2.3 Melting Point, min 160 C (FLTM BO 021-02) 3.3 PHYSICAL PROPERTIES Additional physical properties of the molded parts such as below may be specified on engineering drawing or in engineering performance specification when required.
8、3.3.1 Color As specified on engineering drawing 3.3.2 Water Absorption, max 0.05% (ASTM D 570 - 24 h immersion) 3.3.3 Cold Flexibility at -40 C No cracking Test Method: Cut from the part 3 specimens 0.5 in (13 mm) wide at least 4 in (100 mm) long, and 0.100 - 0.140 in (2.5 - 3.5 mm) thick. If it is
9、not feasible to obtain samples from the part type I or III tensile bars may be used. Condition the specimen to -40 +/- 1 C for 4 h in cold chamber. Without removing from chamber, bend the specimens 180 over a temperature conditioned mandrel having a 3/4 in (19 mm) diameter. The bending shall be accomplished within 5 s.
