1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 11 10 N-STATUS Replaced by WSS-M4D492-B2; Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.8 & 4 1987 11 23 Released CDR1-DR199254 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 THERMOPLASTIC POLYOLE
2、FIN ELASTOMER (TPO), ESB-M4D492-A4 MINERAL FILLER - COLOR PIGMENTED - HIGHER MOLD SHRINKAGE - PAINTED APPLICATIONS ONLY NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an injection molding grade of color pigmented thermoplastic polyolefin that has been modified t
3、o provide stiffness and dimensional stability. This material is non-UV stabilized and must be painted to achieve acceptable weatherability. 2. APPLICATION This specification was released originally for material used for bodyside fairings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATE
4、RIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Total Filler Content 8-11% (ASTM D 2584) 3.5 MOLDED TEST SPECIMENS 3.5.1 Preparation of Test Specimens All test specimens shall be inje
5、ction molded in accordance with ASTM D 1897. The values of this specification are based on unannealed injection molded specimens that shall not be cut from larger specimens unless otherwise specified. 3.5.2 Density 0.93-0.97 g/cm3 (ASTM D 792) 3.5.3 Tensile Strength at Max Load, min 16.0 MPa (ASTM D
6、 638, Type I specimen, 3.2 mm thick, 50 mm/min test speed) Elongation at Break, min 50% 3.5.4 Flexural Modulus 1.0-1.3 GPa (ASTM D 790, Method I, Procedure B, 6.4 x 12.7 x 127 mm specimen, 5 mm/min test speed) ENGINEERING MATERIAL SPECIFICATION ESB-M4D492-A4 Printed copies are uncontrolled Copyright
7、 2006, Ford Global Technologies, LLC Page 2 of 3 3.5.5 Heat Deflection Temperature, min (ASTM D 648, 6.4 x 12.7 x 127 mm specimen) 3.5.5.1 At 0.45 MPa 85 C 3.5.5.2 At 1.82 MPa 45 C 3.5.6 Impact Strength, Izod, min (ASTM D 256, Method A, 3.2 x 12.7 x 63.5 mm specimen) 3.5.6.1 At 23 +/- 2 C 320 J/m 3.
8、5.6.2 At -29 +/- 2 C 37 J/m 3.5.7 Heat Aging Performance (ASTM D 3045, 1000 h at 100 +/- 2 C) 3.5.7.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 3.5.7.2 Elongation Change +/- 15% (Test Method per para 3.5.3) 3.5.7.3 Impact Strength Izod Change +/- 15% (Test Method per para 3.5.6.1,
9、 specimen to be notched before heat aging) 3.5.8 Impact Strength, Falling Dart, min 3.5.8.1 At 23 +/- 2 C 18.1 J 3.5.8.2 At -29 +/- 2 C 18.1 J Test Method: An impact tester (Gardner Model IG-1120 or equivalent) equipped so that the impact head (13 mm diameter) and the base (51 mm diameter) conform t
10、o FLTM BO 117-02. A 1.8144 kg weight will be used unless otherwise specified. Test specimens (100 x 100 x 3.2 +/- 0.2 mm) will be conditioned at the specified temperature for 24 h min. Low temperature specimens will be impacted within 5 s after removal from the cold chamber. Any specimen that exhibi
11、ts no fracture or a punch through ductile tear within the 13 mm impact area will be defined as a pass. Any specimen that exhibits a brittle or shatter type crack beyond the 13 mm impact area will be defined as a failure. A minimum of 10 specimens must be impacted. 3.7 PAINTABILITY The material when
12、painted must meet the requirements of engineering performance specifications shown on the engineering drawing, using coating materials approved by the responsible product materials engineering office. ENGINEERING MATERIAL SPECIFICATION ESB-M4D492-A4 Printed copies are uncontrolled Copyright 2006, Fo
13、rd Global Technologies, LLC Page 3 of 3 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MOLD SHRINKAGE 1.0% (ASTM D 955, after 48 h, injection molded sample) 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.0-5/ C (ASTM D 696)
