1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16456 Polypropylene Copolymer - Mineral Filled, Heat Stabilized, Injection Molding Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 1 of 6 1 Scope Note: Nothing in this standard supercedes applicable laws and regulatio
2、ns. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. This standard covers the properties of mineral filled, heat stabilized, injection molding grade polypropylene copolymer. 1.1 Material Description. Approved paint systems that can
3、 be used on this material are listed in the GM Approved Paint on Parts Systems (APOPS) database. 1.2 Symbols. The material abbreviation according to ISO 11469 is PP/PE-YYXX. The symbol has to be completed by the supplier according to the mineral type and content. 1.3 Typical Applications. Typical ap
4、plications include the following: underhood sight shields. 1.4 Remarks. The classification into groups is according to different ranges and types of mineral filler content. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifi
5、cations. ASTM D3012 ISO 179/1eA ISO 1133 ISO 3451-1 ASTM E831 ISO 188 ISO 1183 ISO 4577 ISO 75-1/2 ISO 294 ISO 1873-2 ISO 11469 ISO 178 ISO 527-1/2 ISO 3167 2.2 GM Standards/Specifications. GMW3013 GMW3221 GMW14650 GMW3059 GMW14444 GMW15725 2.3 Additional References. TMC003 Material Safety Data Shee
6、t guidance documents (available at ). General Motors Approved Paint on Parts Systems (APOPS) database. 3 Requirements 3.1 Requirements on Test Specimens. Unless otherwise specified, injection molding of test specimens shall be accomplished per ISO 294 with the conditions for injection molding from I
7、SO 1873-2. Test methods and specimen dimensions are also to be in accordance with ISO 1873-2 with the following addition: Use ISO 3167; Type A, thickness 4 mm, for tensile and flexural properties. 3.1.1 Materials approved to this specification shall meet the requirements of GMW3013, General Requirem
8、ents for Handling of Technical Terms of Delivery for Plastics. 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 GMW16456 Copyright 2013 Gener
9、al Motors Company All Rights Reserved May 2013 Page 2 of 6 3.1.2 Requirements on Delivery. Important physical, mechanical, and thermal properties that characterize the material are summarized in Table 1 and Table 2. Note: The requirements to Table 1 and Table 2 shall be documented for self-certifica
10、tion of the product according to GMW3013. The color shall be specified on drawings, in material specifications, and otherwise. 3.1.3 All tests shall be performed on specimens for 40 h minimum after molding and immediately following a conditioning period of 24 h minimum in a controlled atmosphere per
11、 GMW3221, Code A, unless otherwise specified. All tests shall be performed on unannealed specimens. 3.1.4 The values specified in Table 1 and Table 2 shall be met by test specimens in natural or black. For colored grades where other pigment and additive systems (e.g., stabilizer) are used, the impac
12、t values shall not decrease more than 10% from the specified minimum value. 3.2 Chemical Requirements. All parts manufactured from molding compounds shall be resistant to the media they contact at their place of use. 3.3 Requirements on Materials. Refer to Table 1 and Table 2. 3.4 Performance Requir
13、ements. Performance requirements, e.g., flammability, fogging, or resistance to odor shall be specified on part drawings or in component specifications. All finished parts for interior applications shall meet the requirements according to GMW14444. All finished parts for Exterior applications shall
14、meet the requirements according to GMW14650. All finished parts for underhood applications shall meet the requirements according to GMW15725. 3.5 Compound Properties. The following are also required for full specification approval: The minimum number of lots per test required is one (1) in natural.
15、Tensile Modulus, Poissons Ratio, and Stress Strain Curve at +23 C, +85 C, -30 C. Differential Scanning Calorimetry (DSC) Curve; Multiaxial Impact Curve, and Infrared Spectroscopy Curve. Table 1: Compound Properties (Natural and Black) Property Standard Unit TD20 TD30 TD40 KD15 Mineral Filler ISO 345
16、1-1, Method A Percent (%) by mass 18 to 22 28 to 32 38 to 42 13 to 17 Density ISO 1183, Method A g/cm3 Target Range 1.02 to 1.07 Target Range 1.10 to 1.16 Target Range 1.20 to 1.26 Target Range 1.00 to1.05 Tensile Strength at Yield ISO 527-1/2 Specimen A, Test Speed 50 mm/minute MPa 24 24 24 23 Tens
17、ile Strength Retention after Heat Aging ISO 527-1/2 ISO 188 1000 h at 100 C % Retention 75 75 75 75 Flexural Modulus ISO 178, 80 mm 10 mm 4 mm Specimen, Test Speed 2 mm/minute, 64 mm span MPa 2000 to 2600 2800 to 3600 3500 to 4200 2700 to 3300 Tensile Modulus ISO 527-1/2, Specimen 1A, 1 mm/minute te
18、st speed MPa 2200 to 2800 2800 to 3700 3600 to 4300 2800 to 3400 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 GMW16456 Copyright 2013 Gen
19、eral Motors Company All Rights Reserved May 2013 Page 3 of 6 Property Standard Unit TD20 TD30 TD40 KD15 Notched Charpy Impact at +23 C ISO 179/1eA kJ/m2 4.5 3.5 1.5 4.5 Notched Charpy Impact at -40 C ISO 179/1eA kJ/m2 2 1.5 1.0 1.5 Notched Charpy Impact Retention after Heat Aging ISO 179/1eA, ISO 18
20、8, 1000 h at 100 C % Retention 75 75 75 75 Heat Deflection Temperature (HDT) Under Load, 1.8 MPa Method A ISO 75-1/2, Specimen 80 10 4 mm, Flatwise, Unannealed C 65 65 70 60 Mold Shrink, 48 h after Molding ISO 294, Plaque Size 100 mm 150 mm 3 mm % Target Range: 1.1 to 1.3 Note 1 Target Range: 1.0 to
21、 1.2 Note 1 Target Range: 0.9- to.1.0 Note 1 Target Range: 1.1 to1.3 Note 1 Mold Shrink, 48 h after Molding ISO 294, Plaque Size 100 mm 150 mm 2 mm % Target Range: 1.0 to1.2 Note 1 Target Range: 0.9 to1.1 Note 1 Target Range: 0.8 to1.0 Note 1 Target Range: 1.0 to1.2 Note 1 Coefficient of Linear Ther
22、mal Expansion (CLTE) ASTM E831 from -30 C to 110 C mm/mm 10-6 /C Flow: 90 x-flow: 150 Flow: 80 x-flow: 140 Flow: 80 x-flow: 120 Flow: 90 x-flow: 165 Melt Volume-Flow Rate MVFR 230 C/2.16 kg ISO 133 cm/10 minutes Target Range: Report Note 2 Target Range: Report Note 2 Target Range: Report Note 2 Targ
23、et Range: Report Note 2 Melt Flow Rate MFR 230 C/2.16 kg ISO 1133 g/10 minutes Target Range: 25 to 30 Note 2 Target Range: 25 to 30 Note 2 Target Range: 22 to 27 Note 2 Target Range: 25 to 30 Note 2 Thermal Oxidative Stability ISO 4577, ASTM D3012, +150 C, 336 h in air Circulating Oven _ No visual d
24、egradation Note 1: Determined on test plaques and manufactured at defined conditions. Not tooling specification data. Note 2: Can vary by region, as long as shrinkage is not affected. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduct
25、ion or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16456 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 4 of 6 Table 2: Compound Properties (Integrally Colored) Property Standard Unit TD20 TD30 TD40 KD15 Notched Charpy Impact at +
26、23 C ISO 179/1eA kJ/m2 3 2 1 3 Color Change after Heat Aging ISO 188, 500 h at 100 C E E 3.0 No Objectionable Defects Allowed 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations vali
27、d 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 released to a GM material specification shall be tested for conformity with the re
28、quirements of this material specification and approved by the responsible GM 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
29、 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 modifications of materials and/or processes and to apply for a new release
30、. 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 responsible GM Engineering department and the supplier. 5.4 Material Safet
31、y 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 of Classific
32、ation 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. 5.5 All mat
33、erials 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 approved materials can be found in MATSPC. This GM Material File is
34、 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 decision is made to use a not yet approved material, contact th
35、e Plastics Global Subsystem Leadership Team for detail on the approval process. The material approval process must be completed prior to PPAP start date of the part supplied to General Motors. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo
36、reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16456 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 5 of 6 7 Notes 7.1 Glossary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Stand
37、ards. 7.2 Acronyms, Abbreviations, and Symbols. APOPS Approved Paint on Parts Systems ASTM ASTM International CLTE Coefficient of Linear Thermal Expansion DSC Differential Scanning Calorimetry GHS Globally Harmonized System of Classification and Labeling of Chemicals GMNA General Motors North Americ
38、a HDT Heat Deflection Temperature KD Mica Powder MFR Melt Flow Rate MSDS Material Safety Data Sheet MVFR Melt Volume Flow Rate PE Polyethylene PP Polypropylene PPAP Production Part Approval Process SAE SAE International SDS Safety Data Sheet TD Talc Powder 8 Coding System This standard shall be refe
39、renced in other documents, drawings, etc., as follows: Mineral Filled, Heat Resistant, Polypropylene Copolymer Material per GMW16456P-PP/PE-YYXX Where: YY = Type of filler (TD Talc powder, KD Mica powder) XX = Percent (%) filler 9 Release and Revisions This standard was originated in November 2010.
40、It was first approved by the Global Plastics Team in December 2010. It was first published in December 2010. Issue Publication Date Description (Organization) 1 DEC 2010 Initial publication. 2 MAY 2013 Added Type TD30. Revised Heat Deflection Temperature. (Plastics Global Subsystem Leadership Team)
41、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 GMW16456 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 6 of 6 Cros
42、s Reference of Replaced Specifications GMW16456 Type Codes Formerly Identified As TD20 GMP.PP.045 (GMNA) TD40 GMP.PP.079 (GMNA) KD15 GMP.PP.028 (GMNA) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
