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Standard Test Methods for Indentation Hardness of Organic Coatings
STANDARD published on 10.12.1998
Designation standards: ASTM D1474-98
Note: WITHDRAWN
Publication date standards: 10.12.1998
SKU: NS-17374
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
Hardness (indentation), Hardness tests-organic coatings, Knoop hardness number (KHN), Lacquer, Pfund hardness number (PHN), Varnishes, organic coatings-indentation hardness, by Knoop and Pfund methods,, test
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 6 to 12 Method B---Pfund Indentation Hardness 13 to 191.3 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 This standard does not purport to address the safety problems, 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. |
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2. Referenced Documents | ||||||||||||
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