1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW15674 Polypropylene Copolymer - Mineral Filled, Heat Resistant, Weatherable, Injection Molding Copyright 2013 General Motors Company All Rights Reserved July 2013 Page 1 of 4 1 Scope This standard covers the properties of talc filled, heat r
2、esistant, weatherable, injection molding grade polypropylene copolymer. 1.1 Material Description. Approved paint systems that can be used on this material are listed in the GM Approved Paint on Parts System (APOPS) database. 1.2 Symbols. The material abbreviation according to ISO 11469 is PP/PE-MXXP
3、P/PE-M10PP/PE-M20PP/PE-M10PP/PE-M20PP/PE-M10PP/PE-M20 Notched Charpy Impact at +23 C ISO 179/1eA kJ/m2 5 4 Notched Izod Impact at +23 C ISO 180/A, edgewise impact kJ/m2 5 4.2 Accelerated Weathering Color Change Surface Defects Test to GMW14650 (Xenon Weatherometer) Class 3 N/A E 3.0 No objectionable
4、 defects allowed E 3.0 No objectionable defects allowed Natural Weathering Note 1 Color Change Surface Defects Two years exposure to natural weathering in Arizona and Florida per SAE J1976, Procedure A N/A E 3.0 No objectionable defects allowed E 3.0 No objectionable defects allowed Note 1: Alternat
5、e natural weathering sites may be used according to GMW16847. If alternate natural weathering sites are to be used, obtain agreement from the regional GM Engineering group prior to sending the test samples for exposure. 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regula
6、tions. 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 o
7、r 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., pr
8、operties, 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 docu
9、mentation 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 agree
10、d to between the responsible Engineering department and the supplier. 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 GMW15674 Copyright 201
11、3 General Motors Company All Rights Reserved July 2013 Page 4 of 4 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 S
12、heet 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. In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC003 Materia
13、l Safety Data Sheet/Safety 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
14、Motors. A list of approved 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) mate
15、rial approval. If the decision is made to use a not yet approved material, contact GM Materials Engineering 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: Global repos
16、itory of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. APOPS Approved Paint on Parts System CLTE Coefficient of Linear Thermal Expansion DSC Differential Scanning Calorimetry (Curve) GHS Globally Harmonized System of Classification and La
17、beling of Chemicals M Mineral MFR Melt Flow Rate MSDS Material Safety Data Sheet MVR Melt Volume-Flow Rate PP/PE Polypropylene and Polyethylene Copolymer PPAP Production Part Approval Process SDS Safety Data Sheet TMA Thermal Mechanical Analysis 8 Coding System This standard shall be referenced in o
18、ther documents, drawings, etc., as follows: Material per GMW15674P-PP/PE-MXX, Where XX = % Mineral filler Polypropylene Copolymer- Talc Filled, Heat Resistant, Weatherable 9 Release and Revisions This standard was originated in September 2007. It was first approved by the Global Plastics Team in Sep
19、tember 2008. It was first published in September 2008. Issue Publication Date Description (Organization) 1 SEP 2008 Initial publication. 2 JUL 2013 Five year refresh of standard. Added 10% Mineral Type. (Plastics Global Subsystem Leadership Team) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
