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ASTM D6491-09(2023)

Current Reaffirmation

Standard Practice for Evaluation of Aging Resistance of Prestressed Prepainted Metal In a Dry Heat Test

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1.1 This practice can be used to evaluate the resistance of a prestressed prepainted metal panel to cracking, or loss of adhesion, or both, after accelerated heat aging. Most coil coated products are formed and bent into specific shapes to produce a final product. These operations introduce stresses, which may be relieved by cracking of the coating after aging.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This practice details the standard procedure for evaluating the resistance of prestressed prepainted metal panels to cracking, or loss of adhesion, or both, after accelerated heat aging by dry heat test. This test method requires the use of gravity or forced air laboratory oven, bench vise, bending dies or test shims, 10x magnifier, and adhesive tape.


SDO ASTM: ASTM International
Document Number D6491
Publication Date March 1, 2023
Language en - English
Page Count 2
Revision Level 09(2023)
Supercedes
Committee D01.53
Publish Date Document Id Type View
June 1, 2009 D6491-09 Revision
Dec. 10, 1999 D6491-99 Revision
March 1, 2023 D6491-09R23 Reaffirmation
Dec. 1, 2016 D6491-09R16 Reaffirmation
Dec. 1, 2003 D6491-99R03 Reaffirmation