1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 13 N-STATUS Replaced by WSS-M4D638-B R. Lord 2005 02 03 Revised Inserted 3.0; Deleted 3.2.8, 3.3 & 4 1971 09 24 Released AB1-437 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 2 POLYPROPYLENE C
2、OPOLYMER, SELF-EXTINGUISHING ESB-M4D334-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polypropylene copolymer injection molding or extrusion grade resin formulated to achieve increased elongation, improved impact resistance, and self-extinguishing propertie
3、s. 2. APPLICATION This specification was released originally for material used in applications where fire resistance is required, such as wiring conduit scrolls and wiring shields. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform t
4、o the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 BASE MATERIAL, Pigmented molded specimens 3.1.1 Specific Gravity 0.96 - 1.15 (ASTM D 792) 3.1.2 Flow Rate 0.35 - 0.9 g/10 min (ASTM D 1238) 3.1.3 Tensile Strength at Max Load, min 3,000 psi (20.7 MPa) (ASTM D 638, Sp
5、eed “C“) Elongation, min 100% 3.1.4 Flexural Modulus, min 1.9 x 105 psi (ASTM D 790) (1.3 GPa) 3.1.5 Flexural Strength, min 3,800 psi (26.2 MPa) (ASTM D 790) 3.1.6 Impact Strength, Izod, min (ASTM D 256) Notched 0.7 ft lb/in (38 J/m) Unnotched 9.0 ft lb/in (481 J/m) ENGINEERING MATERIAL SPECIFICATIO
6、N ESB-M4D334-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 2 3.1.7 Deflection Temperature, min 55 C (ASTM D 648, 264 psi (1820 kPa) 3.2 MOLDED/EXTRUDED PART 3.2.1 Color Black or as specified on engineering drawing 3.2.2 Specific Gravity 0.96 - 1.15 (ASTM D
7、 792) 3.2.3 Hardness - Rockwell “R“ 75 - 85 (ASTM D 785) 3.2.4 Water Absorption, max 0.03% (ASTM D 570, 24 h immersion) 3.2.5 Melting Point, min 155 C (FLTM BO 021-02) 3.2.6 Heat Aging Must pass (100 days at 121 +/- 3 C) After aging, parts must pass flammability requirement per para. 3.2.7. 3.2.7 Fl
8、ammability, max SE/NBR (FLTM BN 024-02) Flame must extinguish itself prior to reaching the scribed line 1-1/2 in (38 mm) from the open end of the top or bottom of U-shaped frame. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MOLD SHRINKAGE 0.005-0.015 in/in (mm/mm) 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 3.3 - 5.5 x 10-5/F (5.9-9.9 x 10-5/C)
