Standard Test Method for Corner Coverage of Powder Coatings

Published date

06-01-2017

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 06.02, 2017 Defines the determination of the ratio of corner thickness to face thickness of powder coatings applied to a specific face thickness by dipping preheated square bars into aerated powder and curing the coating using predetermined conditions.

1.1This test method covers the determination of the ratio of corner thickness (see 3.1.3) to face thickness (see 3.1.4) of powder coatings applied to a specific face thickness by dipping preheated square bars into aerated powder and curing the coating using predetermined conditions.

Note 1:The property of corner coverage has also been referred to as “edge coverage,” though the latter is not recommended. There are widespread misunderstandings and expectations relative to the term “edge coverage.” This test is performed on a steel bar having square corners and the results do not necessarily relate to edges that are sharper, that is, burrs. A coating that has measurable corner coverage may still not protect sharper edges from corrosion or provide the electrical insulation needed in some applications.

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

1.3This 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.

1.4This 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.

Committee	D 01
DocumentType	Test Method
ProductNote	Reconfirmed 2017
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM D 2967 : 2007 : R2013

ASTM D 4242 : 2007 : R2017	Standard Test Method for Inclined Plate Flow for Thermosetting Coating Powders
ASTM D 3451 : 2006 : R2017	Standard Guide for Testing Coating Powders and Powder Coatings
ASTM A 775/A775M : 2019	Standard Specification for Epoxy-Coated Steel Reinforcing Bars

ASTM D 374/D374M : 2016	Standard Test Methods for Thickness of Solid Electrical Insulation
ASTM D 374/D374M : 2023	Standard Test Methods for Thickness of Solid Electrical Insulation