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ASTM D 1474 Document Information:
Title
Standard Test Methods for Indentation Hardness of Organic Coatings
ASTM International
Publication Date:
Dec 10, 1998
Scope:
(Footnote *)
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.
Two methods are covered as follows:
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.
Test Method A of these test methods is similar in content (but not
technically equivalent) to ISO
6441-1 and ISO 6441-2.
The values stated in inch-pound units are to be regarded as the
standard. The values given in
parentheses are for information only.
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.
Footnote * - A Summary of Changes section appears at the end of this standard.
Keywords:
-
hardness (indentation)
-
hardness (Knoop)
-
hardness (Pfund)
-
Knoop indenter
-
Pfund hardness tester
-
Pfund indenter
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