ASTM D 6491 Standard Practice for Evaluation of Aging Resistance of Prestressed Prepainted Metal In a Dry Heat Test
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ASTM D 6491 Document Information:
Title
Standard Practice for Evaluation of Aging Resistance of Prestressed Prepainted Metal In a Dry Heat Test
ASTM International
Publication Date:
Dec 10, 1999
Scope:
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.
The values stated in SI units are to be regarded as the standard. The
values given in parentheses
are for information only.
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 and
health practices and determine the applicability of regulatory
limitations prior to use.
Keywords:
- aging
- coil
- cracking
- dry heat
- fabrication
- flexibility
- heat aging
- prepaint
- pick-off
- stresses
- t-bend
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