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ASTM B244-97(2002)

Historical Revision

Standard Test Method for Measurement of Thickness of Anodic Coatings on Aluminum and of Other Nonconductive Coatings on Nonmagnetic Basis Metals with Eddy-Current Instruments

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1.1 This test method covers the use of eddy-current instruments for the nondestructive measurement of the thickness of a nonconductive coating on a nonmagnetic basis metal.

1.2 This test method is particularly useful for measuring the thickness of an anodic coating on aluminum alloys. Chemical conversion coatings are too thin to be measured by this method.


The thickness of a coating is often critical to its performance. This eddy-current method is nondestructive and is suitable for measuring the thickness of anodic coatings on aluminum, as well as the thickness of most nonconductive coatings on nonmagnetic basis metals.

This test method requires that the conductivity of the substrate be the same in the calibration standard and in the coated article to be measured.

SDO ASTM: ASTM International
Document Number B244
Publication Date April 10, 1997
Language en - English
Page Count 3
Revision Level 97(2002)
Supercedes
Committee B08.10
Publish Date Document Id Type View
April 15, 2009 B0244-09 Revision
April 10, 1997 B0244-97R02 Revision
April 10, 1997 B0244-97 Revision
April 1, 2021 B0244-09R21 Reaffirmation
May 1, 2014 B0244-09R14 Reaffirmation