1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16607 Polypropylene - Glass Fiber Reinforced, Chemically Coupled, Heat Stabilized Homopolymer Copyright 2011 General Motors Company All Rights Reserved July 2011 Originating Department: North American Engineering Standards Page 1 of 4 1 Scop
2、e 1.1 Material Description. This specification covers the properties of injection moldable, glass fiber reinforced, chemically coupled, heat stabilized polypropylene homopolymer. 1.2 Symbols. The material abbreviations according to ISO 11469 are shown in Table 1. 1.3 Typical Applications. Typical ap
3、plications include the following: fan shrouds, under hood parts, brackets. 1.4 Remarks. The classification into groups is according to the different ranges of glass fiber content. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/
4、Specifications. ISO 75-1 ISO 527-1/2 ISO 75-2 ISO 1133 ISO 75-3 ISO 1183 ISO 178 ISO 1873-2 ISO 179/1eA ISO 3167 ISO 179/1eU ISO 3451-1 ISO 188 ISO 4577 ISO 294 ISO 11359-1/2 ISO 294-4 ISO 11469 2.2 GM Standards/Specifications. GMW3013 GMW3221 GMW3059 GMW3232 GMW3205 GMW3235 2.3 Additional Reference
5、s. 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 of Technical Terms of Delivery for Plastics. 3.1 Requirements on Delivery. Important physical, me
6、chanical, 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 GMW3013. The color shall be specified on drawings, in material specifications and otherwise. 3.2
7、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 methods and specimen dimensions are also to be in accordance with ISO 1873-2. Test methods and speci
8、men 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 period of 24 h mini
9、mum 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 specified temperature
10、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 Chemical Require
11、ments. 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: Tensile Modu
12、lus, 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 GMW16607 Copyright 2011 Gen
13、eral 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 Filler Percentage 10
14、% 20% 30% 40% 50% ISO Symbol ISO11469 - PP-GF10PP-GF20PP-GF30PP-GF40PP-GF50 Ash ISO 3451-1, Method A, at +800 C % by mass 10 3 20 3 30 3 40 3 50 3 Density ISO 1183, Method A g/cm Target Range 0.97 0.03 Target Range 1.05 0.03 Target Range 1.15 0.03 Target Range 1.19 0.03 Target Range 1.27 0.03 Melt F
15、low Rate MFR230/2.16 ISO 1133 g/10 minutes Report Results 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 Report Results Tensile Modulus ISO 527-1, ISO 3167, 4 mm thick, T
16、ype A bar 1 mm/minute MPa 2200 to 3500 3800 to 5000 5200 to 7200 7500 to 10 500 9500 to 12 500 Tensile Strength at Break ISO 527-1/2, specimen 1A, 5 mm/minute MPa 40 to 60 55 to 75 65 to 85 80 to 105 90 to 115 Tensile Strength at Break after Heat Aging Note 1 ISO 527-1/2, specimen 1A, 5 mm/minute %
17、Retention 85Flexural Modulus ISO 178, 2 mm/minute MPa 2000 to 3000 3500 to 4500 4800 to 6500 7200 to 9600 9000 to11 500 Charpy Impact Strength Unnotched at +23 C ISO 179/1eU kJ/m 20 35 40 45 45 Charpy Impact Strength Unnotched at -30 C ISO 179/1eU kJ/m 15 20 20 25 25 Charpy Impact Strength Notched a
18、t +23 C ISO 179/1eA kJ/m 3.5 5 6 7 7 Charpy Impact Strength Unnotched at +23 C after Heat Aging Note 1 ISO 179/1eA % Retention 85 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,
19、-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16607 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 3 of 4 Property Test Method Units Nominal Glass Fiber Filler Percentage 10% 20% 30% 40% 50% Heat Deflection Temperature 1.8 MPa Method A ISO 75-1, ISO 75-2, ISO 75-3, flatwise C 11
20、5 125 135 140 140 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 0.1 to 0.8 Target Range 0.1 to 0.6 Target Range 0.1 to 0.6 Target Range 0.1 to 0.6 Shrink, 48 h after Molding. Transverse ISO 294-4 Plaques size: 101 x152 x 3.2
21、 mm % Target Range 0.6 to 1.2 Target Range 0.6 to 1.2 Target Range 0.5 to 1.2 Target Range 0.5 to 1.2 Target Range 0.5 to 1.2 Coefficient of Linear Thermal Expansion (CLTE), Longitudinal, -30 to +30 C ISO 11359-1/-2 10-6 mm/mm C Target Range 20 to 50 Target Range 15 to 60 Target Range 10 to 55 Targe
22、t Range 10 to 40 Target Range 10 to 30 CLTE, Transverse, -30 to +30 C ISO 11359-1/-2 10-6 mm/ mm C Target Range 50 to 100 Target Range 60 to 90 Target Range 40 to 60 Target Range 25 to 60 Target Range 25 to 60 Fogging GMW3235-B-Y1-T2 mg 2 Odor GMW3205 B, Specimen 100 x 150 x 3.2 mm 6 minimum Flammab
23、ility GMW3232, Sample size L x W x H: (355 2 mm) x (100 2 mm) x (2 0.2 mm) mm/minute No burn or flame front transmission across the surface at a rate 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 m
24、aterial 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 have retention 85% relative to unaged specimens tested concurrently. 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materi
25、als 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 or materials relea
26、sed 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., properties, manufac
27、turing 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
28、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 Copyright General Moto
29、rs Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16607 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 4 of 4 agreed to between the res
30、ponsible Engineering department and the supplier. 5.4 Initial Source Approval. 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 M
31、aterial 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 submitted in compliance with the Globally Harmonized System
32、 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/Safety Data Sheet guidance documents where available
33、. 5.6 All materials supplied to this standard must comply with the requirements 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 (MATSPC) under
34、this standard number have been qualified by Engineering as meeting the requirements 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 Expa
35、nsion GF Glass Fiber GHS Globally Harmonized System MFR Melt Flow Rate MSDS Material Safety Data Sheet MVF 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 GMW16607P-PP-GFXX Where: P
36、P = Polypropylene GFXX = Glass Fiber content 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-,-,-
