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WITHDRAWN ASTM D1474/D1474M-13 1.7.2008 preview

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ASTM D1474/D1474M-13

Standard Test Methods for Indentation Hardness of Organic Coatings

STANDARD published on 1.7.2008

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The information about the standard:

Designation standards: ASTM D1474/D1474M-13
Note: WITHDRAWN
Publication date standards: 1.7.2008
SKU: NS-17375
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Organic coatings

Annotation of standard text ASTM D1474/D1474M-13 :

Keywords:

hardness (indentation), hardness (Knoop), hardness (Pfund), Knoop indenter, Pfund hardness tester, Pfund indenter, ICS Number Code 25.220.60 (Organic coatings)

Additional information

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 scratching. These measurements do not necessarily characterize the resistance to mechanical abuse of coatings that are required to remain intact when deformed.

1. 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

Method B—Pfund Indentation Hardness

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.

2. Referenced Documents

D7091-22	Standard Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals
E384-22	Standard Test Method for Microindentation Hardness of Materials
D1005-95(2020)	Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D823-18(2022)	Standard Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels
ISO 6441-2	Paints and Varnishes--Determination of micro-indentation hardness--Part 2: Knoop hardness by measurement of the indentation depth under load
ISO 6441-1	Paints and Varnishes--Determination of micro-indentation hardness--Part 1: Knoop hardness by measurement of the indentation length Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.

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