1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS No Replacement Named C. Mracna, NA 2004 07 27 Revised Para 3.0 inserted; para 3.4, 3.5 & 4 deleted 1982 02 12 Released 3N2-301 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 ELASTO
2、MER, POLYESTER - BLOW MOLDING COMPOUND ESA-M2D230-A7 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyterephthalate ester blow molding compound with excellent heat resistance. 2. APPLICATION This specification was released originally for material used as boo
3、ts for shock absorbers. 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 MOLDING COMPOUND 3.1.1 Specific Gravity, 1.16 +/- 0.03 (ASTM D 792) 3.1.2
4、 Moisture Content, max 0.1% 3.1.3 Flow Rate 0.8 - 2.8 g/ (ASTM D 1238, 2160 g load, 230 C) 10 min 3.2 MOLDED TEST SPECIMEN 3.2.1 Hardness, Durometer “D“ 57 +/- 3 (ASTM D 2240) 3.2.2 Tensile Strength, min 5,400 psi (ASTM D 638, Die IV) (37.2 MPa) Elongation, min 375% 3.2.3 Compression Set, max 5% (AS
5、TM D 395, Method “A“, 22 h at 70 C) 3.2.4 Tear Strength, min 845 lb/in (ASTM D 1004, Die “C“) (148 kN/m) 3.2.5 Drop Weight Impact No Fracture (25 ft-lb (34 J) min at -40 C) ENGINEERING MATERIAL SPECIFICATIONESA-M2D230-A7 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC P
6、age 2 of 2 3.2.6 Modulus of Elasticity, 20,500 - 31,500 psi (ASTM D 790, Method I, (141 - 217 MPa) Procedure “B“) 3.2.7 Heat Aged (ASTM D 573, 21 days at 125 C) Hardness, Durometer “D“ Change -7 to +7 Tensile Strength Change -25 to +25% Elongation Change -25 to +25% 3.3 MOLDED PART 3.3.1 Specific Gravity 1.16 +/- 0.03 (ASTM D 792) 3.3.2 Flow Rate 0.8 - 2.8 g/ (ASTM D 1238, 2160 g load, 230 C) 10 min
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