GMNA-GMP.E-P.152-2006.pdf
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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.E/P.152 Polyolefin Alloy - 2500 MPa Flexural Modulus Copyright 2006 General Motors Corporation All Rights Reserved December 2006 Originating Department: North American Engineering Standards Page 1 of 2 1 Scope 1.1 Material Description. This
2、specification covers the properties of a 2500 MPa nominal flexural modulus polyolefin alloy, high flow, pellet form, injection molding compound. For the purpose of this specification, polyolefin alloy is defined as an alloy of polypropylene plastic and EP or EPDM rubber. 1.2 Symbols. The material ab
3、breviation according to ISO 11469 is E/P. 1.3 Typical Applications. Typical applications include the following: painted grilles. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D3763 ISO 1133 ASTM E228 ISO 1
4、183 ASTM E831 ISO 3451-1 ISO 178 ISO 11469 ISO 294 SAE J1545 ISO 527-1 SAE J1960 ISO 527-2 2.2 GM Standards/Specifications. GM9327P GMW3059 GMW3001 GMW3221 3 Requirements Important physical, mechanical and thermal properties that characterize the material are summarized in charts. The color shall be
5、 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 ISO 294. Test shall be conducted 40 h minimum after molding and immediately following a conditioning period of 24 ho
6、urs minimum at conditions per GMW3221, code A. All tests shall be performed on unannealed specimens. Test shall be 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 procedur
7、es, processes, and/or handling the materials required by this specification. 3.2 Requirements on Parts. 3.2.1 Compound Properties. See Table 1. 3.3 Performance Requirements. Performance requirements, e.g., flammability, fogging or resistance to odor shall be specified on part drawings or in componen
8、t specifications. 4 Manufacturing Process Not Applicable. 5 Rules and Regulations 5.1 All materials supplied to this specification must comply with the requirements of GMW3001, Rules and Regulations for Material Specifications. 5.2 All materials supplied to this specification must comply with the re
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