GMNA-GMP.TPU.007-2003.pdf
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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.TPU.007 Thermoplastic Polyurethane Alloy 10% Glass Fiber Reinforced, 10% Mineral Filled, 1300 MPa Flexural Modulus 1 Scope 1.1 Material Description. This specification covers the properties of 10% nominal glass fiber reinforced, 10% nominal
2、mineral filled, 1300 Mpa nominal flexural modulus thermoplastic polyurethane alloy, pellet form, injection molding compound. The alloying polymer is an ABS compound. 1.1.1 Paintability. Approved paint systems that can be used on this material are listed in the GM Approved Paint on Parts Systems (GM
3、APOPS) database. 1.2 Symbol. The material abbreviation according to ISO 11469 is TPU. 1.3 Typical Application. Typical applications include the following: body side moldings, claddings, rocker panels and appliqus. 2 References Note: Only the latest approved standards are applicable unless otherwise
4、specified. 2.1 External Standards/Specifications. ASTM D256 ASTM D792 ASTM D638 ASTM D1897 ASTM D790 ASTM D2584 2.2 GM Standards/Specifications. GMW3001 GMW3059 3 Requirements Important physical, mechanical and thermal properties that characterize the material are summarized in charts. The color sha
5、ll be specified on drawings, in material specifications and otherwise. 3.1 Requirements on Test Specimens. Unless otherwise specified, test specimens shall be injection molded according to ASTM D1897. Test specimens shall be 3.2 0.2 mm thick unless otherwise specified in this GMP specification. Izod
6、 specimens shall be cut from the centers of the 127 x 12.7 x 3.2 mm bars. Test shall be conducted 40 hours minimum after molding and immediately following a conditioning period of 24 hours minimum at conditions per GMW 3221, Code A. All tests shall be performed on unannealed specimens. Tests shall b
7、e conducted using the latest issue of the test methods indicated. Suitable precautions should be taken to ensure that applicable safe limits are not exceeded when conducting test procedures, processes, and/or handling the materials required by this specification. Requirements on Parts Copyright 2003
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- GMNA GMP TPU 007 2003
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