1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW17047 Polyamide High Heat Resistant - Glass Fiber Reinforced, Heat Stabilized Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 1 of 4 1 Scope 1.1 Material Description. This standard covers the properties of a glas
2、s fiber reinforced, heat stabilized, high temperature capable polyamide which is used in injected form for molded components. 1.2 Symbols. The material abbreviations according to ISO 11469 are shown in Table 1. 1.3 Typical Applications. Typical applications include the following: Engine covers, turb
3、o system components, and other underhood application where temperature resistance is desired. 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 References Note: Only the latest ap
4、proved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D6869 ISO 188 ISO 527-1/2 ISO 3451 ISO 75 ISO 294 ISO 1183 ISO 11469 ISO 179/1eA ISO 527 ISO 1874-2 ISO 15512 2.2 GM Standards/Specifications. GMW3013 GMW3059 GMW3221 GMW14335 2.3 Additional Refer
5、ences. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements 3.1 Requirements on Test Specimens. Reference GMW3221. 3.2 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in charts. The color sh
6、all be specified on drawings, in material specifications and otherwise. Unless otherwise specified, injection molding of test specimens shall be accomplished per ISO 294 with the conditions for injection molding from ISO 1874-2. All values indicated herein are based on material considered to be in t
7、he dry-as-molded state with moisture content of 0.2% maximum (ASTM D6869, ISO 15512, Method A or B, or GMW14335). Immediately after molding, specimens shall be sealed in moisture-proof containers and stored at 22 C 3 C for at least 24 h prior to test as specified in ISO 1874-2. All tests shall be pe
8、rformed 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 22 C 3 C shall be conducted at the specified temperature using specimens conditi
9、oned at the specified temperature for 4 h minimum. The minimum values specified in the property tables must be met by test specimens in natural, black, or in a standard sampled color if natural or black are not available. 3.2.1 Compound Properties (Natural, Black and Integrally Colored). See Table 1
10、. The following are also required for full standard approval. The minimum number of lots per test required 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), Shear Modulus Cu
11、rve. See GMW3013 for the test procedures. 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 ENGINEERING STANDARDS GMW17047 Copyright 2013 General Motors Company All
12、 Rights Reserved December 2013 Page 2 of 4 Table 1: Compound Properties (Natural and Black) Glass Fiber Reinforcement Percentage 15% 35% Property Standard Units Value Value ISO Symbol ISO 11469 PA-GF15PA-GF35 Ash ISO 3451 % 13 to 17 33 to 38 Density ISO 1183 g/cm3 Target Range 1.15 to 1.30 Target Ra
13、nge 1.35 to 1.50 Moisture Content ISO 15512, Method A or B or GMW14335 % 0.2 0.2 Tensile Modulus ISO 527-1/2 MPa 5000 to 8500 10 000 to 12 500 Tensile Stress at Break ISO 527-1/2 MPa 85 120 Tensile Stress at Break after Heat Aging Note 1 ISO 188 ISO 527 % Retention 75 75 Tensile Strain at Break ISO
14、527-1/2 % 2.0 2.0 Notched Charpy Impact Strength At +23 C At -30 C ISO 179/1eA kJ/m2 6.0 3.0 9.0 5.0 Notched Charpy Impact after Heat Aging Note 2 ISO 188 ISO 179/1eA % Retention 75 75 Heat Deflection Temperature under Load 1.8 MPa ISO 75 C 200 230 Note 1: Specimens tested for Tensile Stress at Brea
15、k to ISO 527 after heat aging 1000 h 5 h at +180 C 5 C according to ISO 188, Method A (air oven method) shall have a minimum of 75% retention relative to unaged specimens tested concurrently. Note 2: Specimens tested for Notched Charpy Impact per ISO 179/1eA after heat aging 1000 h 5 h at +180 C 5 C
16、 according to ISO 188, Method A (air oven method) shall have a minimum of 75% retention relative to unaged specimens tested concurrently. Charpy impact specimens shall be notched prior to aging. 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials must
17、 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. Copyright General Motors Company Provided by IHS under license with General Mo
18、tors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW17047 Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 3 of 4 5.3 Inspection and Rejection. Samples of components or materials released to
19、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., properties, manufacturing
20、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 documentation of all modific
21、ations 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 to between the respons
22、ible Engineering department and the supplier. 5.4 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 submitte
23、d in compliance with the Globally 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/S
24、afety Data Sheet guidance documents where available. 5.5 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Materials supplied to this specification must be approved by General Motors. A list of app
25、roved materials can be found in MATSPC. This GM Material File is provided to third parties to reduce redundant testing of materials. If approved material already listed is used, the part supplier can use GM Material File reference for Production Part Approval Process (PPAP) material approval. If the
26、 decision is made to use a not yet approved material, contact GM Plastics Global Subsystem Leadership Team (GSSLT) for details on the approval process. The material approval process must be completed prior to PPAP start date of the part supplied to General Motors. 7 Notes 7.1 Glossary. MATSPC: Globa
27、l 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 of Classification and Labeling of Chemicals GSSLT Global Subsystem Leadership Team MSDS Material Saf
28、ety Data Sheet PPAP Production Part Approval Process SDS Safety Data Sheet 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW17047P-PA-GFZ Z- Percentage of Glass Fiber Copyright General Motors Company Provided by IHS under license with
29、General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW17047 Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 4 of 4 9 Release and Revisions This standard was originated in September 2
30、013. It was first approved by the Plastics Global Subsystem Leadership Team in December 2013. It was first published in December 2013. Issue Publication Date Description (Organization) 1 DEC 2013 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-,-,-
