1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16798 Polyphthalamide - Impact Modified, Fuel Compatible, Heat Stabilized, Hot Oil Moldable Copyright 2012 General Motors Company All Rights Reserved August 2012 Originating Department: North American Engineering Standards Page 1 of 4 1 Scop
2、e 1.1 Material Description. This standard covers the properties of an impact modified, fuel compatible, heat stabilized polyphthalamide, injection moldable, hot oil moldable. 1.2 Symbols. The material abbreviations according to SAE J1344 is PPA-IPPA-I Density ISO 1183 g/cm3 Target Range 1.10 to 1.17
3、 Tensile Modulus ISO 527 MPa 1900 to 2500 Tensile Stress at Break ISO 527 MPa 50 Stress at Break (at +23 C) after Heat Aging Note 1 ISO 188 ISO 527 1000 h at 120 C % Retention 75 Moisture Content ISO 15512 Method A or B or GMW14335 % 0.2 Notched Charpy Impact Strength at +23 C at -30 C ISO 179/1eA k
4、J/m2 60 10 Notched Charpy Impact Strength (at +23 C) after Heat Aging Note 1 ISO 188 ISO 179/1eA 1000 h at 120 C % Retention 75 Melting Temperature ISO 3146 or ISO 11357-3 C Target Range 290 to 315 Heat Deflection Temperature under Load, 1.8 MPa ISO 75 C 115 Flammability GMW3232 or ISO 3795 All repo
5、rting must be in accordance with GMW3232 mm/minute Self-Extinguishing (SE) or 100 Tensile Stress at Break after Fuel Soak Note 1 ISO 527-1/2, 50 mm/minute following 5000 h at 60 C in CE10 per SAE J1681 or 10% BioEthanol in Gasoline according to ISO 1817 Liquid 1 % Retention 75 Provided by IHSNot for
6、 ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16798 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 3 of 4 Property Standard Units Range Swell after Fuel Soak Measure swell per paragraph 3.4 following 1000
7、 h at 60 C in CE10 per SAE J1681 or 10% BioEthanol in Gasoline according to ISO 1817 Liquid 1. % Change 0.25 for each direction Note 1: Specimens tested for Stress at Break to ISO 527 and Notched Charpy Impact Strength to ISO 179 at +23 C 3 C after heat aging 1000 h 5 h at +120 C 5 C according to IS
8、O 188 Method A (air oven method), shall have a minimum of 75% retention relative to unaged specimens tested concurrently. 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in
9、 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 materials released to a GM material specification shall be tested for conformity with the requir
10、ements 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 process, location of manufacture, etc. If not otherwise agreed, all testin
11、g 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 modifications of materials and/or processes and to apply for a new release. If no
12、t 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 responsible Engineering department and the supplier. 5.4 Initial Source Approval.
13、 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 specification. 5.5 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product subm
14、issions, 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 Globally Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or other count
15、ry-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 documents where available. 5.6 All materials supplied to this standard must comply with the requirement
16、s of GMW3059, Restricted and Reportable 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 (i.e., MATSPC) under this standard number have been qualified by Engineering as meeting the r
17、equirements 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 of Linear Thermal Expansion GHS Globally Harmonized System of Classification and Labeling of C
18、hemicals Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16798 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 4 of 4 MSDS Material Safety Data Sheet SAE SAE International SDS Safety Da
19、ta Sheet SE Self Extinguishing 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Impact Modified, Fuel Compatible, Heat Stabilized Polyphthalamide per GMW16798P-PPA Where: GMW16798 = Document Identification P = Material Type, P=Plastic PPA = Material C
20、ategory 9 Release and Revisions This standard was originated in April 2012. It was first approved by the Plastics Global Subsystem Leader Team in August 2012. It was first published in August 2012. Issue Publication Date Description (Organization) 1 AUG 2012 Initial publication. Cross Reference of R
21、eplaced Specifications GMW16798 Replaced Specification GMW16798P-PPA GMP.PPA.022 (standard never published) Approval to the replaced specification does not guarantee approval to this specification. Recertification is required. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
