1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 01 25 Revised Inserted 3.0; Deleted 3.1, 3.3.1, 3.6 & 4 1980 12 08 Released H8L-22 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 2 POLYPROPYLENE, 20% TALC FILLED - HEAT STABILIZED ESH-M4D293-B 1.
2、SCOPE The material defined by this specification is a talc filled polypropylene heat stabilized to withstand 150 C for not less than 1000 h. 2. APPLICATION This specification was released originally for material used in injection molded heater and air conditioning ducts and similar components and ma
3、y be used in the passenger compartment or underhood. 3. REQUIREMENTS 3.0 STANDARD REQUIEREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MOLDING COMPOUND 3.2.1 Flow Rate 4 - 8 g/10
4、 min (ASTM D 1238, Condition “L“) 3.2.2 Talc Filler 17 - 23% (Ash at 450 C, 1 h) 3.2.3 Moisture Content, max 0.1% Test Method: Dry 10 g sample of pellets in a circulating air oven for 2 h at 105 C. Calculate % moisture from weight loss. 3.3 MOLDED TEST SPECIMEN 3.3.2 Specific Gravity 1.02 - 1.08 (AS
5、TM D 792) 3.3.3 Tensile Strength, min 4,200 psi (29 MPa) (ASTM D 638, Speed “C“) Elongation Ultimate, min 10% 3.3.4 Impact Strength, Izod, min 8.0 ft.lb/in (427 J/m) (ASTM D 256, unnotched) 3.3.5 Flexural Modulus, min 310,000 psi (2.2 GPa) (ASTM D 790) ENGINEERING MATERIAL SPECIFICATIONESH-M4D293-BP
6、rinted copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 2 3.3.6 Deflection Temperature, min (ASTM D 648) At 66 psi (455 kPa) 116 C (At 264 psi (1,820 kPa) 66 C 3.3.7 Heat Aging, Long Term (150 C, 1000 h) No whitening, crazing or loss in gloss permitted. There shall be
7、no more than 30% loss in tensile strength. 3.4 MOLDED PART 3.4.1 Talc Filler 17 - 23% (Ash at 450 C, 1 h) 3.4.2 Flow Rate 4 - 8 g/10 min (ASTM D 1238, Condition “L“) 3.5 FLAMMABILITY, max 4 in (101 mm)/min (FLTM BN 024-02, without the lot sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above maximum value.
