1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16557 PA66+PPE (Polyamide 66 + Polyphenylene Ether) - Heat Stabilized, Conductive Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: North American Engineering Standards Page 1 of 4 1 Scope 1.1 Mate
2、rial Description. This standard covers the properties of a heat stabilized, conductive PA66+PPE (polyamide 66 + polyphenylene ether) blend which is used in injected form for molded components. The conductivity improves paint efficiency. 1.2 Symbols. The material abbreviation according to ISO 11469 i
3、s PA66+PPE-I. 1.3 Typical Applications. Typical applications include the following: fuel filler doors. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D3763 ISO 1183 ASTM D6869 ISO 1874-2 ISO 75 ISO 3146 ISO
4、 179/1eA ISO 6603-1/2 ISO 188 ISO 11357-3 ISO 294 ISO 11469 ISO 527 ISO 15512 ISO 1133 ISO 60093 2.2 GM Standards/Specifications. GMW3013 GMW3221 GMW3059 GMW14335 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements Materials approved to thi
5、s specification shall meet the requirements of GMW3013, General Requirements for Handling of Technical 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 spec
6、ified on drawings, in material specifications and otherwise. 3.2 Requirements on Test Specimens. Unless 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
7、to be in accordance with ISO 1874-2. All values indicated herein are based on material considered to 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 moistur
8、e-proof containers and stored at 22 3 C for at least 24 h. All tests shall be performed on unannealed 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
9、22 3 C shall be conducted at the specified temperature using specimens conditioned at the specified temperature for 4 h minimum. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-
10、,-GM WORLDWIDE ENGINEERING STANDARDS GMW16557 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 2 of 4 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. For colored grades wh
11、ere other pigment and additive systems (e.g., stabilizer) are used, the impact values shall not decrease more than 10% from the specified minimum value. 3.3 Compound Properties. See Table 1. The following are also required for full standard approval. The minimum number of lots per test required for
12、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, 85 C). See GMW3013 for all test procedures and parameters. 3.4 Performance Requirements. Performance requ
13、irements 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 hydrocarbons, fuels, lubricants, oils, greases and alcohols, at their places of use. Table 1: Compou
14、nd Properties (Natural and Black) Property Standard Units Range Density ISO 1183 g/cm3 Target Range 1.07 to 1.12 Melt Volume Rate ISO 1133 280 C, 5.0 kg cc/10 minutes 4.0 to 24.0 Tensile Modulus ISO 527 1 mm/minute MPa 1900 to 2900 Tensile Stress at Yield ISO 527 50 mm/minute MPa 49 Tensile Stress a
15、t Yield after Heat Aging ISO 188 ISO 527 1000 h at 80 C % Retention 75 Notched Charpy Impact Strength at +23 C at -30 C ISO 179/1eA kJ/m2 6.5 2 Notched Charpy Impact Strength after Heat Aging ISO 188 ISO 179/1eA 1000 h at 80 C % Retention 75 Multiaxial Impact - Exterior at 23 C ASTM D3763 2.2 m/s J
16、at Maximum Load 13 Multiaxial Impact - Exterior ISO 6603-1/2 4.4 m/s J at Maximum Load Report Melting Temperature ISO 3146 or ISO 11357-3 C Target Range 245 to 265 Heat Deflection Temperature under Load 1.8 MPa ISO 75 C 90 Volume Resistivity ISO 60093 m 1000 Mold Shrinkage (for reference only) after
17、 48 h at 23 C Parallel to Flow Perpendicular to Flow ISO 294-3/4 % Target Range 1.5 1.5 4 Manufacturing Process Not applicable. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
18、-GM WORLDWIDE ENGINEERING STANDARDS GMW16557 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 3 of 4 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. 5.2 Language
19、. 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 materials released to a GM material specification shall be tested for conformity with the requirements of this material specificati
20、on 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., properties, manufacturing process, location of manufacture, etc. If not otherwise agreed, all testing and documentation normally requir
21、ed 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 documentation of all modifications of materials and/or processes and to apply for a new release. If not otherwise agreed, all release tes
22、ts 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 to between the responsible Engineering department and the supplier. 5.4 Initial Source Approval. No shipments shall be made by any
23、supplier until representative initial production samples have been approved by the appropriate Materials Engineering department(s) as meeting the requirements of this specification. 5.5 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemic
24、al 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 Globally Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements.
25、In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC003 Material Safety Data Sheet/Safety Data Sheet guidance documents where available. 5.6 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Report
26、able Substances for Parts. 6 Approved Sources Engineering qualifications of an approved source are required for this standard. Only sources listed in the GM Materials File (MATSPC) under this standard number have been qualified by Engineering as meeting the requirements of this standard. 7 Notes 7.1
27、 Glossary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. CLTE Coefficient of Linear Thermal Expansion GHS Globally Harmonized System MSDS Material Safety Data Sheet SDS Safety Data Sheet 8 Coding System This s
28、tandard shall be referenced in other documents, drawings, etc., as follows: Heat Stabilized, Conductive PA66+PPE per GMW16557P-PA66+PPE Where: GMW16557 = Document Identification P = Material Type, P=Plastic PA66+PPE = Material Category Copyright General Motors Company Provided by IHS under license w
29、ith General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16557 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 4 of 4 9 Release and Revisions This standard was originated in March 201
30、1. It was first approved by the Global Plastics Team in July 2011. It was first published in August 2011. Issue Publication Date Description (Organization) 1 AUG 2011 Initial publication. Cross Reference of Replaced Specifications GMW16557 Replaced Specification GMW16557P-PA66+PPE GMP.PA66+PPE.010 Approval to the replaced specification does not guarantee approval to this specification. Recertification is required. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
