Norm ASTM D1474-98R02

Standaard testmethoden voor inkepingshardheid van organische coatings Deze titel is een machinevertaling van de oorspronkelijke Engelstalige titel (Engelstalige pagina ).
Status
:
Vervangen
Publicatiedatum
:
1998
Talen
:
EN
ICS
:
25.220.60 Organische deklagen
Samenvatting :

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 Hardness6-12
Method B-Pfund Indentation Hardness13-19

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 equivalen
t) to ISO 6441-1 and ISO 6441-2.

1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

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.

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