GMNA-GMP.PE.011-2003.pdf
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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.PE.011 Polyethylene High Density, Homopolymer Copyright 2003 General Motors Corporation All Rights Reserved October 2003 Page 1 of 2 1 Scope This specification covers the properties of a high density polyethylene homopolymer. 1.1 Symbol. The
2、 material abbreviation accord- ing to ISO 11469 is PE-HD 1.2 Typical Applications. Typical applications include the following: Seat slides. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D638 ASTM D648 ASTM
3、 D790 ASTM D792 ASTM D1928 ASTM D3763 ISO 11469 2.2 GM Standards/Specifications. GM9036P GMW3001 GMW3059 GMW3221 3 Requirements 3.1 Requirements on Delivery. 3.1.1Requirements for Test Specimens. Tests shall be conducted using the latest issue of the test methods indicated. Suitable precautions shou
4、ld 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. Test specimens shall be compression molded according to ASTM D1928, Procedure C. Test specimens shall be 1.9 0.2 mm thick unles
5、s otherwise specified in this GMP specification. All test specimens shall be brought to equilib- rium in standard conditions for temperature and moisture and tested in that state as defined in GMW3221 Code A, unless the test method indi- cates that standard conditioning is not required. Condition sp
6、ecimens for a minimum of 24 h prior to testing or until moisture equilibrium is reached. If specimens are tested outside the conditioned environment, they shall be tested within 10 minutes of removal. Tests shall be conducted on dry-as-molded, unannealed test specimens. The minimum values specified
7、in the property tables must be met by test specimens in natural, black, or in a standard sampled color if natural or black are not available. 3.1.2 Chemical Requirements. All parts manu- factured from molding compounds shall be re- sistant to the media they contact, such as ali- phatic and aromatic
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- GMNA GMP PE 011 2003
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