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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.E/P.119 Polyolefin Alloy UV Stabilized, 20% Mineral Filler, Scratch Resistant, Injection Molded 1 Scope 1.1 Material Description. This specification covers the properties of a UV stabilized, scratch resistant, pellet form, injection molded b
2、lend of polypropylene, EPDM, and mineral filler. 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 abbreviation
3、ac- cording to ISO 11469 is E/PMD20. 1.3 Typical Application. Typical applica- tions include the following: high heat trim with good scratch resistance e.g. instrument panel trim, instrument panel substrate, rear window trim, etc. 2 References Note: Only the latest approved standards are applicable
4、unless otherwise specified. 2.1 External Standards/Specifications. ASTM D3763 ISO 75 ISO 178 ISO 294 ISO 527 ISO 1183 ISO 3451/1 ISO 11469 SAE J1545 SAE J1885 2.2 GM Standards/Specifications. GM9538P GMW3001 GMN3943 GMW3059 3 Requirements 3.1 Requirements on Delivery. Important physical, mechanical
5、and thermal properties that characterize the material are summa- rized in charts. The color shall be specified on drawings, in material specifications and otherwise. Unless otherwise specified, injection mold- ing of test specimens shall be accomplished per ISO 294. Test shall be conducted 40 h mini
6、mum after molding and immediately following a condi- tioning period of 24 h minimum in a con- trolled 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. Suit- able precautions should b
7、e taken to ensure that applicable safe limits are not exceeded when conducting test procedures, proc- esses, and/or handling the materials re- quired by this specification. October 2003 Originating Department: North American Engineering Standards Page 1 of 3 Copyright General Motors North America Pr
8、ovided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 23:21:46 MDTNo reproduction or networking permitted without license from IHS -,-,- GMP.E/P.119 GM ENGINEERING STANDARDS Copyright 2003 General Motors Corporation All Rights Reserved Page
9、 2 of 3 October 2003 3.1.1 Compound Properties. See Table 1. Table 1: Compound Properties (Natural) Mechanical Properties Standard Unit Values Mineral Filler ISO 3451-1, Method A % by mass 17 to 24 Density ISO 1183, Method A g/cm 1.00 to 1.08 Flexural Modulus ISO 178, 80 x 10 x 4 mm specimen, 2 mm/m
10、in test speed, 64 mm support span MPa 1700 to 2400 Tensile Stress at Yield ISO 527-1/2, specimen A, 50 mm/min test speed MPa 18 min Scratch and Mar Resis- tance GMN3943, specimen Monticello grain and dark gray color 9780 N/A Rating 1 15N with 1mm stylus and Rating of 1 20N with 7mm stylus Multiaxial
11、 Impact Strength at 23 2C ASTM D3763, 6.6 m/s impact velocity J at max load 15 min All failures must be ductile Multiaxial Impact Strength at 0 2C ASTM D3763, 6.6 m/s impact velocity J at max load 15 min All failures must be ductile HDT 0.45 MPa ISO 75-1/2, flatwise, unannealed C 102 min 3.1.2 Compo
12、und Properties. See Table 2. Table 2 Compound Properties (Intergally Colored) Additional Performance Properties Standard Unit Value Multiaxial Impact Strength at 0 2C ASTM D3763, 6.6 m/s impact velocity J at max load 15 min All failures must be ductile Colorfastness to Light, Natural Weathering Colo
13、r Change Surface Defects GM9538P U/G-TSTL-105, 000 TNR Langleys at 102C E = 3.0 max No objectionable defects allowed Colorfastness to Light, Accelerated Color Change Surface Defects Xenon Arc per SAE J1885, 1240.8 kJ/m2 E = 3.0 max No objectionable defects allowed Note: For integrally colored compou
14、nds, the color of each test specimen shall be measured per SAE J1545, CIELAB color space, 10 degree 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 m
15、aking measurements and observations 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
16、 a firm action. 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 23:21:46 MDTNo reproduction or networking permitted without license from IHS -,-,- GM ENGINEERING STANDARDS GMP.E/P.119 Copyright
17、 2003 General Motors Corporation All Rights Reserved Page 3 of 3 October 2003 3.2 Performance Requirements. Performance Requirements e.g., flammability, fogging or re- sistance to odor shall be specified on part draw- ings or in component specifications. 4 Manufacturing Process Not applicable. 5 Rul
18、es and Regulations 5.1 All materials supplied to this specification must comply with the requirements of GMW3001, Rules and Regulations for Mate- rial Specifications. 5.2 All materials supplied to this specification must comply with the requirements of GMW3059, Restricted and Reportable Sub- stances
19、 for Parts. 6 Approved Sources Engineering qualification of an approved source is required for this specification. Only sources listed in the GM Materials File (i.e., MATSPC) under this specification number have been quali- fied by engineering as meeting the requirements of this specification. 7 Cod
20、ing System This material specification shall be referenced in other documents, drawings, VTS, CTS, etc. as follows: GMP.E/P.119 8 Release and Revisions 8.1 Release. This material specification origi- nated in April 2002 and was approved and pub- lished by GM Engineering in October 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 23:21:46 MDTNo reproduction or networking permitted without license from IHS -,-,-