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1、I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - Plastics I NYLOY 6 - 34% MINERAL FILLED, HEAT STABILIZED, IMPACT MODIFIED GMP.PA6.031 1 SCOPE. This specification covers theproperties of a 34% mineral filled, heat stabilized Nylon 6 injection molding compound. 1.1 PAINTABILITY. App
2、roved paint systems that can be used on this material are listed in the GM Approved Paint On Plastics Systems (GM APOPS) data base. 1.2 APPLICATIONS. Typical applications include the following: wheel covers. 2 REFERENCED STANDARDS. GMlOOOM ASTM D789 ASTM D2584 ASTM D256 ASTM D790 ASTM D3418 ASTM D63
3、8 ASTM D792 ASTM D4019 ASTM D648 ASTM D1897 3 TEST PROCEDURES. 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 conducting test procedures, processes, and/or handling the ma
4、terials required by this specification. 3.1 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 specimens shall be cut from the centers of the 127 x 12.7 x 3.2 mm bars. 3.2 Tests shall
5、 be conducted on dry-as-molded, unannealed test specimens. These specimens are to be sealed in water vapor impermeable containers immediately after molding and maintained in the sealed containers 22 f 3C until the time of testing, 24 h min after molding. Tests shall be made 22 f 3C unless otherwise
6、specified. 4 COMPOUND PROPERTIES. 4.1 RESTRICTED AND REPORTABLE CHEMICALS (GMlOOOM). By 1997 start of saleable vehicles, all materials supplied to this specification must comply with the require- ments listed in GMlOOOM, “Restricted and Reportable Chemicals.” 4.2 COMPOUND CERTIFICATION. Material sup
7、pliers must certify molding compound properties to the specific GM Test Sampling Plan approved for their material. 4.3 COMPOUND PROPERTIES (NATURAL AND BLACK). See Table 1. 5 SUGGESTED COMPOUND VERIFICATION. Inherent compound properties and test procedures that may be used to identify this material
8、are listed below. The test value and test procedure requirements are identical to those listed in Section 4, Compound Properties. Heat Stabilizer Content Filler Content Infrared Characterization Scan Melt Point Relative Viscosity Specific Gravity 6 COMPOUND AND SOURCE APPROVAL. Bach vehicle group an
9、d component division will have its own approved compound list derived from the corporate plastics file (MATSPC). No shipment shall be made by a new source until a sample of the compound manufactured at a production facility has been approved by the appropriate vehicle group and/or component division
10、. Shipment receipt and certification requirements will vary among receiving locations. 6.1 Completed copies of the Material Safety Data Sheet meeting GM information requirements must be submitted with any new submissions or whenever a composition change has occurred. 7 IDENTIFICATION. The molding co
11、mpound shall be identified by the specification code, the manufacturers identi- fication code and lot number, along with any additional vehicle group and component division requirements. 8 INSPECTION AND REJECTION. The purchaser reserves the right to sample incoming shipments even though it is the r
12、esponsibility of the supplier to meet the requirements stated without dependence upon the purchasers inspection. The supplier (whether prime contractor or subcontractor) will forfeit qualification if a change is made in material, processing methods, testing methods, or location of manufacture withou
13、t prior written request to and subsequent approval from the pur- chaser. 9 GENERAL INFORMATION. This standard was origi- nated by the Plastics Committee in March 1995 from a May 1990 preprint. 0 Copyright JUNE 1895 General MOWS Corpraton All Rights ReemeU JUNE 1995 PAGE 1 PA6.031 Copyright General M
14、otors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 19:59:13 MDTNo reproduction or networking permitted without license from IHS -,-,- E 9006379 0000427 867 I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Proc
15、esses - Plastics I NYLON 6 - 34% MINERAL FILLED, HEAT STABILIZED, IMPACT MODIFIED GMP.PA6.031 TABLE 1 - COMPOUND PROPERTIES (NATURAL AND BLACK) Properties Mineral Filler (exclusive of carbon black) Moisture Content as Received Specitlc Gravity Melt Point Flexural Modulus Test Values 32 - 36% Test Me
16、thods ASTM D2584 20% max 137 - 147 210 - 225C 3700 MPa min ASTM D789 or ASTM D4019 ASTM D792 ASTM D3418, 1o”C/minute ASTM D790, Method I, 1.3 mm/mm 50 mm span, tangent calculation. ASTM D638, Qpe I bar, 50 mm/minute ASTM D638, Type I bar, 50 mm.minute after48h 177C ASTM D648, 1820 kPa ASTM D256, Met
17、hod A Tensile Stress at Yield 62 MPa min Tensile Stress at Yield after Heat Aging 90% min retention of original Deflection Temperature Under Load Notched Izod Impact 44C mill 59 J/m min 0 CoWright JUNE 1695 General Motors COrpOratiOn All Rights Resecved PAGE 2 JUNE 1995 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 19:59:13 MDTNo reproduction or networking permitted without license from IHS -,-,-