1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW15813 Thermoplastic Elastomers - Polyolefinic, Fully Crosslinked, General Purpose, Underhood Copyright 2012 General Motors Company All Rights Reserved June 2012 Originating Department: North American Engineering Standards Page 1 of 7 1 Scope
2、 1.1 Material Description. This specification covers the properties of black and natural, general purpose, heat stabilized, thermoplastic vulcanizates (TPV) containing fully crosslinked Ethylene-Propylene-Diene Monomer (EPDM) elastomer particles dispersed in a continuous Polypropylene (PP) matrix. T
3、hese materials can be processed by extrusion, injection, and blow molding. Material types are delineated by hardness values. The types and corresponding hardnesses available are identified in Appendix A, Table A1. 1.2 Symbols. The material abbreviation according to ISO 18064 is TPV-(EPDM + PP). 1.3
4、Typical Applications. Typical applications include the following: mats, seals, gaskets, air ducts, Constant Velocity Joint (CVJ) boots, covers, grommets, and other parts where softness and conformity are needed. 2 References Note: Only the latest approved standards are applicable unless otherwise sp
5、ecified. 2.1 External Standards/Specifications. ISO 34-1 ISO 527 ISO 868 ISO 18064 ISO 37 ISO 812 ISO 1183 ISO 188 ISO 815 ISO 1817 2.2 GM Standards/Specifications. GMW3013 GMW3059 GMW3221 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements
6、 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, mechanical and thermal properties that characterize the material are summarized in Table
7、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 Requirements on Test Specimens. Tests shall be conducted using the latest issue of the t
8、est methods indicated. Suitable precautions should be taken to ensure that applicable safe limits are not exceeded when conducting test procedures, processes, and/or handling the materials required by this specification. 3.2.1 Tests specimens shall be die cut from fan gated injection molded plaques
9、having a nominal thickness of 2.0 mm 0.2 mm. Die cut specimens are to be tested with the long axis of the test specimen perpendicular to the direction of flow. Plaque dimensions must be sufficient to permit this. 3.2.2 Tests shall be conducted 40 h minimum after molding and immediately following a c
10、onditioning period of 24 h minimum per GMW3221 Code A unless otherwise specified. All tests shall be performed on unannealed specimens. In addition, tests specified at temperatures below or above 22 C 3 C shall be conducted at the specified temperature using specimens conditioned at the specified te
11、mperature for 4 h minimum. 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 GMW15813 Copyright 2012 General Motors Company All Rights Reserve
12、d June 2012 Page 2 of 7 3.2.3 The minimum values specified in the property tables must be met by test specimens in natural, black, or in a specification sampled color if natural or black are not available. For colored grades where other pigment and additive systems (e.g., stabilizer) are used, the i
13、mpact values shall not decrease more than 10% from the specified minimum value. 3.3 Compound Properties. See Table 1. A minimum of six lots shall be tested to Table 1. The following are also required for full specification approval (the minimum number of lots per test required is one): Youngs Modulu
14、s, Poissons Ratio, Coefficient of Linear Thermal Expansion (CLTE), Stress-Strain Curve at 23 C, Table 1: Compound Properties (Natural/Black) Property Test Method Unit Type 2 Type 3 Type 4 Type 5 Type 6 Type 7 Type 8 Type 9 Type 10 Shore A Hardness ISO 868, 15 s delay Shore A 35 5 45 5 55 5 65 5 73 5
15、 80 5 87 5 N/A N/A Shore D Hardness ISO 868, 15 s delay Shore D N/A N/A N/A N/A N/A N/A N/A 40 5 50 5 Specific Gravity ISO 1183 0.90 to 0.97 0.92 to 0.97 0.90 to 0.97 0.94 to 1.00 0.94 to 1.00 0.93 to 1.00 0.93 to 0.99 0.92 to 0.98 0.91 to 0.96 Tensile Stress at Break ISO 37, Type 1 dumbbell, 500 mm
16、/minute MPa 1.6 min. 2.8 min. 4.1 min. 5.1 min. 6.7 min. 8.9 min. 11 min. N/A N/A Tensile Stress at Break ISO 527, Type 1BA dumbbell, 50 mm/minute MPa N/A N/A N/A N/A N/A N/A N/A 15.7 min. N/A Tensile Stress at Yield ISO 527, Type 1BA dumbbell, 50 mm/minute MPa N/A N/A N/A N/A N/A N/A N/A N/A 10.1 m
17、in. Elongation at Break ISO 37, Type 1 dumbbell, 500 mm/minute % 160 min. 265 min. 310 min. 340 min. 370 min. 400 min. 485 min. N/A N/A Elongation at Break ISO 527, Type 1BA dumbbell, 50 mm/minute % N/A N/A N/A N/A N/A N/A N/A 520 min. N/A Elongation at Yield ISO 527, Type 1BA dumbbell, 50 mm/minute
18、 % N/A N/A N/A N/A N/A N/A N/A N/A 15 min. Tensile Stress at 100% Elongation ISO 37, Type 1 dumbbell, 500 mm/minute MPa 0.6 min. 0.8 min. 1.7 min. 1.9 min. 2.8 min. 3.8 min. 5.6 min. N/A N/A Tensile Stress at 100% Elongation ISO 527, Type 1BA dumbbell, 50 mm/minute MPa N/A N/A N/A N/A N/A N/A N/A 7.
19、4 min. N/A Compression Set ISO 815, Type A, 70 h at 125 C % 55 max. 55 max. 50 max. 50 max. 60 max. 65 max. 80 max. 90 max. 95 max. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS
20、-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15813 Copyright 2012 General Motors Company All Rights Reserved June 2012 Page 3 of 7 Property Test Method Unit Type 2 Type 3 Type 4 Type 5 Type 6 Type 7 Type 8 Type 9 Type 10 Tear Strength ISO 34-1, Method B, angle die, 500 mm/minute kN/m 8.0 min. 11 min.
21、15 min. 20 min. 25 min. 30 min. 45 min. N/A N/A Tear Strength ISO 34-1, Method B, angle die, 50 mm/minute kN/m N/A N/A N/A N/A N/A N/A N/A 60 min. 95 min. Low Temperature Brittleness ISO 812, Type B C -56 max. -56 max. -56 max. -52 max. -54 max. -53 max. -52 max. -47 max. -21 max. Properties After S
22、hort Term Heat Aging ISO 188, 168 h at 150 C in an air-circulating oven followed by the indicated property testing at 23 C. Test methods are the same as for original mechanical property testing. Change in Property Tensile Stress Elongation Tensile Stress at 100% Elongation % % % -35 max. -20 max. +2
23、0 max. -25 max. -30 max. +20 max. 35 max. 20 max. -50 max. -35 max. -40 max. -20 max. -35 max. -35 max. -10 max. -35 max. -35 max. +25 max. -35 max. -35 max. +30 max. -35 max. -40 max. +30 max. -35 max. -40 max. N/A Properties After Long Term Heat Aging ISO 188, 1000 h at 135 C in an air-circulating
24、 oven followed by indicated property testing at 23 C. Test methods are the same as for original mechanical property testing. Change in Property No objectionable color change or tackiness Tensile Stress Elongation % % 60 retention min. 60 retention min. Properties After Long Term Fluid Aging ISO 1817
25、, immersion in IRM 903, 70 h at 125 C followed by indicated property testing at 23 C. Test methods are the same as for original mechanical property testing. Change in Property Tensile Stress % -80 max. -65 max. 60 max. -55 max. -50 max. -45 max. -40 max. -50 max. -40 max. Elongation % -85 max. -75 m
26、ax. 80 max. -75 max. -65 max. -60 max. -55 max. -50 max. -60 max. 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 GMW15813 Copyright 2012 Ge
27、neral Motors Company All Rights Reserved June 2012 Page 4 of 7 Property Test Method Unit Type 2 Type 3 Type 4 Type 5 Type 6 Type 7 Type 8 Type 9 Type 10 Tensile Stress at 100% Elongation % N/A -35 max. 35 max. -20 max. -20 max. -20 max. -25 max. -15 max. N/A Volume Change % +150 max. +120 max. 120 m
28、ax. +110 max. +95 max. +80 max. +65 max. +55 max. +50 max. Tear Strength % -90 max. N/A 80 max. -65 max. -65 max. -65 max. -60 max. -50 max. -50 max. Min. = minimum Max. = maximum N/A = not applicable 3.4 Performance Requirements. Performance requirements e.g., flammability, resistance to odor, etc.
29、, shall be specified on part drawings or in component specifications. 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
30、 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 requirements of this material specification and approved b
31、y 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 testing and documentation normally required for initial re
32、lease 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 repea
33、ted 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. No shipments shall be made by any supplier until re
34、presentative 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
35、 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 country-specific MSDS/SDS requirements. In addition, prod
36、uct 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 requirements of GMW3059, Restricted and Reportable Substances f
37、or 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 this standard number have been qualified by Engineering as meeting the requirements of this standard. Copyright General Motors Com
38、pany Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15813 Copyright 2012 General Motors Company All Rights Reserved June 2012 Page 5 of 7 7 Notes 7.1 Glossary. MATSPC: G
39、lobal repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. CLTE Coefficient of Linear Thermal Expansion CVJ Constant Velocity Joint EPDM Ethylene-Propylene-Diene Monomer GHS Globally Harmonized System of Classification and Labeling
40、 of Chemicals IRM Industry Reference Material MSDS Material Safety Data Sheet N/A Not applicable PP Polypropylene SDS Safety Data Sheet TPV Thermoplastic Vulcanizate 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW15813P-TPV(EPDM+PP)-
41、Type X Where: GMW = GM Worldwide Specification 15813 = Sequential Number P = Plastic TPV = Thermoplastic Vulcanizate (EPDM+PP) = Ethylene-Propylene-Diene Monomer plus Polypropylene Type X = Type 1 to 10 as defined in Table 1 9 Release and Revisions This standard was originated in February 2008. It w
42、as first approved by the Global Plastics Team in September 2008. It was first published in September 2008. Issue Publication Date Description (Organization) 1 SEP 2008 Initial publication. 2 JUN 2012 Revised Table 1. (Plastics GSSLT) Copyright General Motors Company Provided by IHS under license wit
43、h General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15813 Copyright 2012 General Motors Company All Rights Reserved June 2012 Page 6 of 7 Cross Reference of Replaced Material Coding GMW15813P-TPV(EPDM+PP) Ma
44、terial Codes Formerly Identified As Type 1 N/A Type 2 GMN3927 (GMNA) HN 2355 Type 41 (Holden) Type 3 GMP.E/P.137 (GMNA) QK 003511, QK 001071 (GME) HN 2355 Type 11 (Holden) Type 4 GMP.E/P.001 (GMNA) QK 003513 (GME) HN 2355 Type 12 (Holden) Type 5 GMP.E/P.002 (GMNA) QK 003521, QK 000589 (GME) HN 2355
45、Type 21 (Holden) Type 6 GMP.E/P.003 (GMNA) QK 003532, QK 000582 (GME) HN 2355 Type 22 (Holden) Type 7 GMP.E/P.004 (GMNA) QK 003524, QK 000583 (GME) HN 2355 Type 23 (Holden) Type 8 GMP.E/P.005 (GMNA) QK 003526, QK 000570 (GME) HN 2355 Type 24 (Holden) EDS-M-4615 (GMK) Type 9 GMP.E/P.006 (GMNA) QK 003
46、531, QK 000598 (GME) HN 2355 Type 31 (Holden) Type 10 GMP.E/P.007 (GMNA) QK 003533, QK 000584 (GME) HN 2355 Type 32 (Holden) EDS-M-4617 (GMK) N/A = Not applicable Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking per
47、mitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15813 Copyright 2012 General Motors Company All Rights Reserved June 2012 Page 7 of 7 Appendix A Table A1: Type Definition Type Hardness Range 1 25 5 Shore A 2 35 5 Shore A 3 45 5 Shore A 4 55 5 Shore A 5 65 5 Shore A 6 73 5 Shore A 7 80 5 Shore A 8 87 5 Shore A 9 40 5 Shore D 10 50 5 Shore D Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
