1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16605 Polypropylene - Glass Fiber Reinforced/Mineral Filled, Chemically Coupled, Heat Stabilized Copolymer Copyright 2011 General Motors Company All Rights Reserved July 2011 Originating Department: North American Engineering Standards Page
2、1 of 4 1 Scope 1.1 Material Description. This specification covers the properties of injection moldable glass fiber reinforced and mineral filled, chemically coupled, heat stabilized polypropylene copolymer. 1.2 Symbols. The material abbreviation according to ISO 11469 is shown in Table 1. 1.3 Typic
3、al Applications. Typical applications include the following: IP retainer and brackets. 1.4 Remarks. The classification into groups is according to the different ranges of mineral and glass fiber content. Additional mineral/glass ranges will be added as they become necessary. 2 References Note: Only
4、the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ISO 75-1 ISO 1133 ISO 75-2 ISO 1183 ISO 75-3 ISO 1873-2 ISO 178 ISO 3167 ISO 179/1eA ISO 3167-4 ISO 179/1eU ISO 3451-1 ISO 188 ISO 4577 ISO 294-4 ISO 11359-1/2 ISO 527-1/2 ISO 11469 2.2 GM
5、 Standards/Specifications. GMW3013 GMW3221 GMW3059 GMW3232 GMW3205 GMW3235 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
6、 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. Note: For each product, the requirements to Table 1 shall be documented by Certification Statement according to
7、 GMW3013. The color shall be specified on drawings, in material specifications and otherwise. 3.2 Requirements on Test Specimens. 3.2.1 Unless otherwise specified, injection molding of test specimens shall be accomplished per ISO 294 with the conditions for injection molding from ISO 1873-2. Test me
8、thods and specimen dimensions are also to be in accordance with ISO 1873-2 with the following additions: Use ISO 3167, Type A, thickness 4 mm for tensile and flexural properties. 3.2.2 All tests shall be performed on specimens 40 h minimum after molding and immediately following a conditioning perio
9、d of 24 h minimum in a controlled atmosphere per GMW3221, Code A, unless otherwise specified. All tests shall be performed on unannealed specimens. In addition, test specified at temperatures below or above 23 3 C shall be conducted at the specific temperature using specimens conditioned at specifie
10、d temperature for 4 h minimum. 3.2.3 The values specified in Table 1 shall be met by test specimens in natural or black. For integrally colored grades where other additive systems (e.g., stabilizer) are used, the impact values shall not decrease more than 10% from the specified minimum value. 3.3 Ch
11、emical Requirements. All parts manufactured from molding compounds shall be resistant to the media they contact at their place of use. 3.4 Compound Properties. See Table 1. The following are also required for full specification approval. The minimum number of lots per test required is one in natural
12、: Tensile Modulus, Poissons Ratio, Stress Strain Curve at +23 C, +85 C, -30 C. 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 GMW16605 Copy
13、right 2011 General Motors Company All Rights Reserved July 2011 Page 2 of 4 3.5 Performance Requirements. Performance requirements shall be specified on part drawings or in component specifications. Table 1: Compound Properties (Black or Natural) Property Test Method Units Nominal Glass Fiber/Minera
14、l Filler Percentage ISO Symbol ISO11469 - PP-(GF25+M10)PP-(GF20+M15)PP- (M20+GF15)PP- (GF20+M20) Ash ISO 3451-1, Method A, at +800 C % by mass 35 2 35 2 35 2 40 2 Density ISO 1183, Method A g/cm Target Range 1.19 0.03 Target Range 1.19 0.03 Target Range 1.19 0.03 Target Range 1.23 0.03 Melt Flow Rat
15、e MFR230/2.16 ISO 1133 g/10 minutes Report Results Report Results Report Results Report Results Melt Volume Flow Rate MVR230/2.16 ISO 1133 cm/10 minutes Report Results Report Results Report Results Report Results Tensile Modulus ISO 527-1, ISO 3167, 4 mm thick, Type A bar 1 mm/minute MPa 5600 to 680
16、0 5200 to 6400 4900 to 6300 5400 to 6600 Tensile Strength at Break ISO 527-1/2, specimen 1A, 5 mm/minute MPa 50 to 68 45 to 60 40 to 60 50 to 68 Tensile Strength at Break after Heat Aging Note 1 ISO 527-1/2, specimen 1A, 5 mm/minute % Retention 85 85 85 85 Flexural Modulus ISO 178, 2 mm / minute MPa
17、 5200 to 6500 4800 to 6000 4600 to 6000 5000 to 6200 Charpy Impact Strength Unnotched at +23 C ISO 179/1eU kJ/m Report Results Report Results Report Results Report Results Charpy Impact Strength Unnotched at -30 C ISO 179/1eU kJ/m Report Results Report Results Report Results Report Results Charpy Im
18、pact Strength Unnotched at +23 C after Heat Aging Note 1 ISO 179/1eU % Retention 85 85 85 85 Charpy Impact Strength , Notched at 23 C ISO 179/1eA kJ/m 3 4 4 4 Heat Deflection Temperature, 1.8 MPa Method A ISO 75-1, ISO 75-2, ISO 75-3, flatwise C 135 130 125 130 Copyright General Motors Company Provi
19、ded by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16605 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 3 of 4 Property Test Method Units Nominal Glass
20、Fiber/Mineral Filler Percentage Shrink, 48 h after Molding, Longitudinal ISO 294-4 Plaques size: 101 x152 x 3.2 mm % Target Range 0.2 to 0.8 Target Range 0.2 to 0.8 Target Range 0.2 to 0.8 Target Range 0.2 to 0.8 Shrink, 48 h after Molding. Transverse ISO 294-4 Plaques size: 101 x152 x 3.2 mm % Targ
21、et Range 0.5 to 1.1 Target Range 0.5 to 1.1 Target Range 0.5 to 1.1 Target Range 0.5 to 1.1 Coefficient of Linear Thermal Expansion (CLTE), Longitudinal, -30 to +30 C ISO 11359- 1/2 106 mm/mm C Target Range 10 to 50 Target Range 10 to 50 Target Range 10 to 50 Target Range 10 to 50 CLTE, Transverse,
22、-30 to +30 C ISO 11359- 1/2 106 mm/mm C Target Range 90 to 150 Target Range 90 to 150 Target Range 90 to 150 Target Range 90 to 150 Fogging GMW3235-B-Y1-T2 mg 2 2 2 2 Odor GMW3205 B, Specimen 100 x 150 x 3.2 mm 6 minimum Flammability GMW3232, Sample size L x W x H: (355 2 mm) x (100 2 mm) x (2 0.2 m
23、m) mm/minute 100 Oxidation Stability 500 3 h at +150 3 C in an air circulating oven ISO 4577 - No visible indication of local discoloration and/or brittleness by material degradation Note 1: Heat aging for 1000 5 h at +100 3 C according to ISO 188 Method A (air oven method). Aged specimens shall hav
24、e retention 85% 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 the country of usage. 5.2 Language. In the event of con
25、flict 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 specification and approved by th
26、e 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 required for initial releas
27、e 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 tests shall be repeated
28、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. Copyright General Motors Company Provided by IHS under license with General Motors C
29、ompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16605 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 4 of 4 5.4 Initial Source Approval. No shipments shall be made by any supplier until represent
30、ative 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 chemical composition of an exi
31、sting 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. In addition, product MSD
32、S/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 Reportable Substances for Part
33、s. 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 Glossary. MATSPC: Globa
34、l repository of GM approved materials for corresponding GM engineering standards. 7.2 Acronyms, Abbreviations, and Symbols. CLTE Coefficient of Linear Thermal Expansion GF Glass Fiber GHS Globally Harmonized System ISO International Organization for Standardization M Mineral MFR Melt Flow Rate MSDS
35、Material Safety Data Sheet MVR Melt Volume Rate PP Polypropylene SDS Safety Data Sheet 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16605P-PP-(GFYY+MXX) Where: PP = Polypropylene GFYY = Glass Fiber content by mass MXX = Mineral con
36、tent by mass 9 Release and Revisions This standard was originated in May 2011. It was first approved by the Global Plastics GSSLT in July 2011. It was first published in July 2011. Issue Publication Date Description (Organization) 1 JUL 2011 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-,-,-
