1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW14722 Elastomeric Floor Mats Copyright 2012 General Motors Company All Rights Reserved June 2012 Originating Department: North American Engineering Standards Page 1 of 5 1 Scope 1.1 Material Description. This standard describes elastomeric m
2、aterials that are suitable for floor mat applications. Testing shall be performed on production intent parts. 1.2 Symbols. Not applicable. 1.3 Typical Applications. Not applicable. 1.4 Remarks. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise spec
3、ified. 2.1 External Standards/Specifications. ISO 37 ISO 188 ISO 3865 ISO 23529 ISO 105-X12 ISO 1431-1 ISO 7619-1 SAE J1530 2.2 GM Standards/Specifications. GMW3059 GMW3232 GMW6992 GMW14102 GMW3116 GMW3235 GMW8081 GMW14162 GMW3205 GMW3283 2.3 Additional References. TMC003 Material Safety Data Sheet
4、guidance documents (available at ). 3 Requirements 3.1 Resources. 3.1.1 Test Samples. Unless otherwise specified, the shape, size and number of test pieces shall be in accordance with the relevant Test Methods. Unless otherwise specified, samples are finished parts or to be taken from finished parts
5、. Where the dimensions on the finished parts do not allow preparing of test pieces, tests are to be performed on sheet material of same production batch. Tests must be carried out to state same state of cure between sheet material and finished parts. If not otherwise stated, mechanical properties in
6、 delivery state and after heat or fluid immersion are to be tested at +23 C and with the same test methods. 3.1.2 Conditioning. Conditioning shall be as specified in the relevant Test Methods. 3.1.3 Equipment. Conforming to the relevant Test Methods. 3.1.4 Calibration. The test facilities and equipm
7、ent shall be in good working order and shall have a valid calibration label. 3.1.5 Alternatives. Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this specification shall be determined correctly with respect to its physical definition. 3.1.
8、6 Facilities. Conforming to the relevant Test Methods. 3.1.7 Visual Evaluation of Automotive Trim. The color, pattern, aesthetics and other related qualities shall be approved by the appropriate engineering department as an acceptable match to the standard when viewed under conditions set forth in G
9、MW6992. 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 GMW14722 Copyright 2012 General Motors Company All Rights Reserved June 2012 Page 2
10、of 5 3.2 Material and Performance Requirements. Material and performance requirements are summarized in Table 1. 3.3 Conditions. 3.3.1 Environmental Conditions. The minimum time between vulcanization and testing of elastomers shall be 72 h. The test pieces shall be maintained at a temperature of 23
11、C 5 C for at least 8 h prior to test and shall be free from strain during this period. 3.4 Instructions. Not applicable. 3.5 Data. Not applicable. 3.6 Safety. This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems a
12、ssociated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 3.7 Documentation. Samples of components or material released to this standard shall be tested fo
13、r conformity with the requirements of this standard and approved by the responsible GM Department prior to the start of delivery of production level components or materials. Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufact
14、ure requires a new release of the product. It is the sole responsibility of the supplier to provide the customer, unsolicited, with documentation of any change or modification to the product/process, and to apply for a new release. If not otherwise agreed to, the entire verification test shall be re
15、peated and documented by the supplier prior to start of delivery of the modified or changed product. In some cases, a shorter test can be agreed to between the responsible GM department and the supplier. 3.7.1 Test Results. With reference to this specification, the test results shall be presented in
16、 a test report. 3.7.2 Deviations. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 3.8 Dimensions and Tolerances. Dimensions and tolerances shall be specified on the engineering
17、 part drawing or in the math data file. 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 GMW14722 Copyright 2012 General Motors Company All R
18、ights Reserved June 2012 Page 3 of 5 Table 1: Material and Performance Properties Property Test Method Unit Value Hardness All Types ISO 7619-1 Shore A 65 (+5/-10) Elongation at Break All Types ISO 37, Type 2 or 4 dumb-bell, 200 20 mm/minute % 150 minimum Tensile Strength All Types ISO 37, Type 2 or
19、 4 dumb-bell, 200 20 mm/minute MPa 3 minimum Age Resistance (Heat Aging) All Types ISO 188 Method B, 168 -2 h at +70 C 3 C Change in Hardness Tensile Strength Appearance Shore A MPa +10 maximum 2,6 minimum No whitening or appearance change Ozone Resistance All Types ISO 1431-1, 50 10 pphm, bend over
20、 mandrel with radius of 25 mm, 25 C 2 C, 72 -2 h,. Test face side No cracks Cold Resistance All Types ISO 23529, -30 C 3 C; 5 -1 h Hardness Bending test r=2 mm Shore A 85 maximum no cracks Colorfastness to Artificial Light All Types GMW14162/B/14 MJ/m minimum Test face side color change to ISO 105-X
21、12 Change in Appearance Rating 4 minimum No more than a noticeable change in hue or chroma, and no objectionable tackiness, blotchiness, loss of grain, wrinkling, or other undesirable effects. Abrasion Resistance All Types GMW3283-3 Test face side Test Method Deviation: 4 mm bowing height; test on r
22、aised area of the patterned or grained surface; 600 revolutions. (Nibs/nubs on the back side may be removed if they interfere with running the test.) Weight loss. g/m2 100 maximum Abrasion Resistance All Types SAE J1530, Method B Test back side. Test required at the discretion of the approving engin
23、eer. For mats with nibs on the back side. Test for 5 000 cycles No breakage of the nibs Water Spotting All Types GMW14102 Test face side Test Method Deviation: Specimen 1: Test using 1 ml distilled water Specimen 2: Test using 1 ml saturated NaCI solution Clean with a damp cloth after 1 h and evalua
24、te No formation of spots or other changes in serviceability allowed 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 GMW14722 Copyright 2012
25、General Motors Company All Rights Reserved June 2012 Page 4 of 5 Property Test Method Unit Value Resistance to Odor Propagation All Types GMW3205-B3 Ratio: 1:100 Temperature: 70 C dry condition Rating 6 minimum Fogging All Types GMW3235 B Condensable constituent mg 10 maximum Flammability All Types
26、GMW3232 mm/minute 100 maximum Carpet Compatibility All Types ISO 3865, Method A, Test back side Use production representative light color pile carpet. No staining of carpet Interior Emissions All Types GMW8081 1.0 4 Manufacturing Process Not Applicable. 5 Rules and Regulations 5.1 Legal Regulations.
27、 All materials 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 mate
28、rials released 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., properti
29、es, manufacturing 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 documentat
30、ion 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 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 b
31、etween the responsible 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 specif
32、ication. 5.5 Material 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 Har
33、monized System 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 w
34、here available. 5.6 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted wi
35、thout license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14722 Copyright 2012 General Motors Company All Rights Reserved June 2012 Page 5 of 5 5.7 Recycling Guidelines. All materials developed to this specification shall be optimized to provide maximum end-of-life cycle value utilizing the V
36、ehicle Recyclability/Recoverability Calculation Sheet. Recycled content shall be reported to the approving and procuring Materials Engineering Department utilizing the Part Recyclability/Recoverability Report Form. Reference Appendix A of GMW3116, Recyclability/Recoverability Guidelines. 6 Approved
37、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. For other GM locations, the responsible Engineeri
38、ng group should be contacted to obtain the approved source in that individual country. 7 Notes 7.1 Glossary. MATSPC: Global repository of GM Approved Materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. GHS Globally Harmonized System of Classification and L
39、abeling of Chemicals PPHM Parts per Hundred Million MSDS Material Safety Data Sheets SDS Safety Data Sheet 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW14722 9 Release and Revisions This standard was originated in October 2005. It
40、was first approved by The Global Elastomers Team in May 2006. It was first published in December 2006. Issue Publication Date Description (Organization) 1 DEC 2006 Initial publication. 2 JUN 2012 Five Year Refresh. (Elastomers Global Subsystem Leadership Team) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
