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ASTM International - ASTM D1474/D1474M-13

Standard Test Methods for Indentation Hardness of Organic Coatings

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Organization: ASTM International
Publication Date: 1 July 2008
Status: inactive
Page Count: 5
ICS Code (Organic coatings): 25.220.60
significance And Use:

4.1 Indentation hardness measurements have proven to be useful in rating coatings on rigid substrates for their resistance to mechanical abuse, such as that produced by blows, gouging, and... View More

scope:

1.1 These test methods cover the determination of the indentation hardness of organic materials such as dried paint, varnish, and lacquer coatings, when applied to an acceptable plane rigid surface, for example, metal or glass.

1.2 Two methods are covered as follows:

  Sections
Method A-Knoop Indentation Hardness 6 - 12
Method B-Pfund Indentation Hardness 13 - 19

1.3 Method A, which has the greater precision, provides hardness values in terms of Knoop Hardness Number (KHN). Method B provides hardness in terms of Pfund Hardness Number (PHN). Although the hardness value scales of these methods differ, the methods agree in the ranking of coating hardness.

1.4 Test Method A of these test methods is similar in content (but not technically equivalent) to ISO 6441-1and ISO 6441-2.

1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.6 This standard does not purport to address 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.

Document History

February 1, 2023
Standard Test Methods for Indentation Hardness of Organic Coatings
1.1 These test methods cover the determination of the indentation hardness of organic materials such as dried paint, varnish, and lacquer coatings, when applied to an acceptable plane rigid surface,...
November 1, 2018
Standard Test Methods for Indentation Hardness of Organic Coatings
1.1 These test methods cover the determination of the indentation hardness of organic materials such as dried paint, varnish, and lacquer coatings, when applied to an acceptable plane rigid surface,...
ASTM D1474/D1474M-13
July 1, 2008
Standard Test Methods for Indentation Hardness of Organic Coatings
1.1 These test methods cover the determination of the indentation hardness of organic materials such as dried paint, varnish, and lacquer coatings, when applied to an acceptable plane rigid surface,...
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