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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.E/P.113 Polyolefin Alloy UV Stabilized, 700 MPa Flexural Modulus, Low Temperature Impact, Injection Molded 1 Scope 1.1 Material Description. This specification covers the properties of a uv stabilized, low temperature, high impact, pellet fo
2、rm, injection molded blend of polypropylene and EPDM. Copyright 2003 General Motors Corporation All Rights Reserved 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 APOPS) database. 1.2 Symbol. The material abbrevia
3、tion according to ISO 11469 is E/P. 1.3 Typical Application. Typical applications include the following: low temperature/high impact e.g. garnish trim with ductile to 40C requirements. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Stand
4、ards/Specifications. ASTM D3763 ISO 1183 ISO 178 ISO 11469 ISO 294 SAE J1545 ISO 527 SAE J1885 2.2 GM Standards/Specifications. GM9538P GMW3059 GMW3001 3 Requirements 3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in
5、charts. The color shall be specified on drawings, in material specifications and otherwise. Unless otherwise specified, injection molding of test specimens shall be accomplished per ISO 294. Test shall be conducted 40 hours minimum after molding and immediately following a conditioning period of 24
6、hours minimum in a controlled atmosphere of 22 3C and 50 5% RH. All tests shall be performed on unannealed specimens. Tests 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 conduc
7、ting test procedures, processes, and/or handling the materials required by this specification. December 2003 Originating Department: North American Engineering Standards, Page 1 of 3 Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=
8、Japan, IHS Not for Resale, 06/23/2008 23:21:20 MDTNo reproduction or networking permitted without license from IHS -,-,- GMP.E/P.113 GM ENGINEERING STANDARDS Copyright 2003 General Motors Corporation All Rights Reserved Page 2 of 3 December 2003 3.1.1 Compound Properties. See table 1. Table 1: Compo
9、und Properties (Natural) Mechanical Properties Standard Unit Values Density ISO 1183, Method A g/cm 0.88 to 0.92 Flexural Modulus ISO 178, 80 x 10 x 4 mm specimem, 2 mm/min test speed, 64 mm support span MPa 500 to 800 Tensile Stress at Yield ISO 527-1/2, specimen A, 50 mm/min test speed MPa 10 mini
10、mum Multiaxial Impact Strength at 23 2C ASTM D3763, 6.6 m/s impact velocity J at max load 20 minimum All failures must be ductile Multiaxial Impact Strength at -40 2C ASTM D3763, 6.6 m/s impact velocity J at max load 20 minimum All failures must be ductile 3.1.2 Compound Properties. See table 2. Tab
11、le 2:Compound Properties (Intergally Colored) Additional Performance Properties Standard Unit Value Multiaxial Impact Strength at -40 2C ASTM D3763, 6.6 m/s impact velocity J at max load 20 minimum All failures must be ductile Colorfastness to Light, Natural Weathering Color Change Surface Defects G
12、M9538P U/G-TSTL-105,000 TNR Langleys at 102C E = 3.0 maximum No objectionable defects allowed Colorfastness to Light, Accelerated Color Change Surface Defects Xenon Arc per SAE J1885, 1240.8 kJ/m2 E = 3.0 maximum No objectionable defects allowed Note: For integrally colored compounds, the color of e
13、ach test specimen shall be measured per SAE J1545, CIELAB color space, 10 observer, illuminant D65, specular included, sphere geometry, before and after exposures. In case of conflict between accelerated and natural weathering, natural weathering takes precedent. Prior to making measurements and obs
14、ervations on weathered specimens, wash the specimens with a solution consisting of 2g No 7 Car Wash Concentrate (distributed by Armor All Products, Aliso Viejo, CA 92656) and 1 L deionized water 22 3C. Use a soft sponge saturated with the solution and scrub the samples with a firm action. Copyright
15、General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 23:21:20 MDTNo reproduction or networking permitted without license from IHS -,-,- GM ENGINEERING STANDARDS GMP.E/P.113 3.2 Performance Requirements. Flamm
16、ability, fogging or resistance to odor shall be specified on part drawings or in component 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
17、 Specifications. 5.2 All materials supplied to this specification must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Engineering qualification of an approved source is required for this specification. Only sources listed in the GM Materia
18、ls File (i.e., MATSPC) under this specification number have been qualified by engineering as meeting the requirements of this specification. 7 Coding System This material specification shall be referenced in other documents, drawings, VTS, CTS, etc. as follows: GMP.E/P.113 8 Release and Revisions 8.
19、1 Release. This material specification originated in December 2001 and was approved by GM Engineering in October 2003. It was first published in December 2003. Copyright 2003 General Motors Corporation All Rights Reserved Page 3 of 3 December 2003 Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 23:21:20 MDTNo reproduction or networking permitted without license from IHS -,-,-