1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16802 Polyamide 66, Glass Fiber Reinforced, Heat Stabilized, Non-Conductive for Electrical Components Copyright 2012 General Motors Company All Rights Reserved September 2012 Originating Department: North American Engineering Standards Page
2、1 of 4 1 Scope 1.1 Material Description. This specification describes glass fiber reinforced, heat stabilized, non-conductive polyamide 66 (nylon 66) which is used in injected form. This material is used for electrical components. Copper heat stabilizers are not allowed in this resin. 1.2 Symbols. T
3、he material abbreviations according to ISO 11469 are shown in Table 1. 1.3 Typical Applications. Electrical components. 1.4 Remarks. The classification into groups is according to the different ranges of glass fiber content. Additional glass ranges will be added as they become necessary. 2 Reference
4、s Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D6869 ISO 294 ISO 1874-2 ISO 11359-2 ASTM E831 ISO 294-3/4 ISO 3146 ISO 11469 ISO 75-2 ISO 527 ISO 3451 ISO 15512 ISO 179/1eA ISO 1183 ISO 11357-3 ISO 60243-1 ISO 188 2.2
5、 GM Standards/Specifications. GMW3013 GMW3059 GMW3221 GMW14335 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements Materials approved to this specification shall meet the requirements of GMW3013, General Requirements for Handling of Technic
6、al Terms of Delivery for Plastics. 3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in Table 1. The color shall be specified on drawings, in material specifications and otherwise. 3.2 Requirements on Test Specimens. Unl
7、ess otherwise specified, injection molding of test specimens shall be accomplished per ISO 294 with the conditions for injection molding from ISO 1874-2. Test methods and specimen dimensions are also to be in accordance with ISO 1874-2. All values indicated herein are based on material considered to
8、 be in the dry-as-molded state with moisture content of 0.2% maximum (ASTM D6869, ISO 15512, Method A or B, or GMW14335). Immediately after molding, per ISO 1874-2, specimens shall be sealed in moisture-proof containers and stored at 22 C 3 C for at least 24 h. All tests shall be performed on unanne
9、aled specimens immediately after their removal from the containers in a controlled atmosphere per GMW3221, Code A, unless otherwise specified. In addition, tests specified at temperatures below or above 22 C 3 C shall be conducted at the specified temperature using specimens conditioned at the speci
10、fied temperature for 4 h minimum. The values specified in Table 1 shall be met by test specimens in natural, black or in a standard sampled color if natural or black are not available. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduc
11、tion or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16802 Copyright 2012 General Motors Company All Rights Reserved September 2012 Page 2 of 4 3.3 Compound Properties. See Table 1. The following are also required for full standard approval. The minimum num
12、ber of lots per test required for the following properties is one in natural: Poissons Ratio, Coefficient of Linear Thermal Expansion (CLTE), Mold Shrinkage, Stress Strain Curve at multiple temperatures (for example -30 C, 23 C, 140 C). See GMW3013 for all test procedures and parameters. 3.4 Require
13、ments on Parts. Parts of this material type shall have a water content at delivery, when tested per GMW14335 or ISO 15512, Method A or B, of at least: 1.5% by mass for material types reinforced up to 20% by mass. 1.0% by mass for material types reinforced over 20% by mass. Deviations from this shall
14、 be specifically indicated on the part drawings. 3.5 Performance Requirements. Performance requirements shall be specified on part drawings or in component specifications. All parts manufactured from molding compounds shall be resistant to the media they contact, such as aliphatic and aromatic hydro
15、carbons, fuels, lubricants, oils, greases and alcohols, at their places of use. Table 1: Compound Properties (Natural and Black) Nominal Glass Content Property Standard Unit 35% Value ISO Symbol ISO 11469 PA66-GF35 Ash ISO 3451 % by mass 33 to 37 Density ISO 1183 g/cm3 Target Range 1.37 to 1.45 Mois
16、ture Content ISO 15512, Method A or B or GMW14335 % 0.2 Tensile Modulus ISO 527 MPa 10 000 to 13 000 Tensile Stress at Break ISO 527 MPa 180 Tensile Strain at Break ISO 527 MPa 2.0 Tensile Stress at Break after Heat Aging, 1000 h at 140 C ISO 527 ISO 188 % Retention 75 Notched Charpy Impact Strength
17、 at +22 C at -30 C ISO 179/1eA kJ/m2 8.0 6.0 Notched Charpy Impact Strength after Heat Aging, 1000 h at 140 C, Notch specimens prior to aging ISO 179/1eA ISO 188 % Retention 75 Melting Temperature ISO 3146 or ISO 11357-3 C Target Range 250 to 265 Heat Deflection Temperature Under Load, 1.8 MPa ISO 7
18、5-2 C 245 Dielectric Strength at +22 C at +80 C ISO 60243-1 KV/mm % Retention 35 to 40 90 of +23 C value Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERI
19、NG STANDARDS GMW16802 Copyright 2012 General Motors Company All Rights Reserved September 2012 Page 3 of 4 Nominal Glass Content Property Standard Unit 35% Value CLTE (Coefficient of Linear Thermal Expansion) Parallel to Flow Perpendicular to Flow ASTM E831 or ISO 11359-2, Thermomechanical Analysis
20、(TMA), Mean secant value over the temperature range -30 to +160 C 10-6 mm/mm/C 25 80 Mold Shrinkage (for reference only) after 48 h at 23 C Parallel to Flow Perpendicular to Flow ISO 294-3/4 % 0.10 to 0.25 0.80 to 0.95 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulat
21、ions. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. 5.2 Language. In the event of conflict between the English and domestic language, the English language shall take precedence. 5.3 Inspection and Rejection. Samples of components or
22、 materials released to a GM material specification shall be tested for conformity with the requirements of this material specification and approved by the responsible Engineering department prior to commencement of delivery of bulk supplies. A new approval must be received for any changes, e.g., pro
23、perties, manufacturing process, location of manufacture, etc. If not otherwise agreed, all testing and documentation normally required for initial release must be completed. It is the responsibility of the supplier to inform the customer in a timely manner, without solicitation, and to include docum
24、entation of all modifications of materials and/or processes and to apply for a new release. If not otherwise agreed, all release tests shall be repeated and documented by the supplier prior to commencement of delivery of non-conforming bulk supplies. In individual cases, a shorter test can be agreed
25、 to between the responsible Engineering department and the supplier. 5.4 Initial Source Approval. No shipments shall be made by any supplier until representative initial production samples have been approved by the appropriate Materials Engineering department(s) as meeting the requirements of this s
26、pecification. 5.5 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemical composition of an existing product has occurred, a complete copy of the Material Safety Data Sheet/Safety Data Sheet must be submitted in compliance with the Globall
27、y Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC003 Material Safety Data Sheet/Safety Data Sheet guidance docume
28、nts where available. 5.6 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitt
29、ed without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16802 Copyright 2012 General Motors Company All Rights Reserved September 2012 Page 4 of 4 6 Approved Sources Engineering qualifications of an approved source are required for this standard. Only sources listed in the GM Materials
30、 File (MATSPC) under this standard number have been qualified by Engineering as meeting the requirements of this standard. 7 Notes 7.1 Glossary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. CLTE Coefficient o
31、f Linear Thermal Expansion GHS Globally Harmonized System of Classification and Labeling of Chemicals ISO International Organization for Standardization MSDS Material Safety Data Sheet SDS Safety Data Sheet TMA Thermomechanical Analysis 8 Coding System This standard shall be referenced in other docu
32、ments, drawings, etc., as follows: Glass Fiber Reinforced, Heat Stabilized, Non-Conductive Polyamide 66 per GMW16802P-PA66-GFYY Where: GMW16802 = Document identification P = Material Type, P = Plastic PA66 = Material Category GF = Glass Fiber YY = Percentage of Glass Fiber Reinforcement 9 Release an
33、d Revisions This standard was originated in May 2012. It was first approved by the Plastics Global Subsystem Leadership Team in September 2012. It was first published in September 2012, Issue Publication Date Description (Organization) 1 SEP 2012 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
