ASTM D 4062-99-2016 Determination of Levelness of Coatings by Scratch

Coating Method
Meaning and Purpose
4.1 Leveling can affect the cover-up and appearance of applied architectural coatings, with gloss and semi-gloss finishes showing more noticeable presence of brush marks and surface irregularities than flat finishes. Instrumental evaluation of leveling by this test method has been shown to be relevant for the evaluation of brush applications.

ASTM D 4062-99-2016 Determination of Levelness of Coatings by Scratch 

Scope of
1.1 This test method 2 covers the laboratory determination of the relative leveling of water and solvent resolvable architectural coatings in white and light tones by comparing ridges generated in drawn films with a range of plastic leveling standards.

1.2 Colorless, textured, and dark-toned coatings cannot easily be evaluated with the shadows generated by the oblique lighting employed in this test method. Such coatings can be assessed by comparing them to standards for plastics with different reflection angles. For this, ordinary interior lighting is satisfactory.

1.3 As other factors may affect the droop tendency of liquid coatings, this test method is not used to measure flowhang.

1.4 Values expressed in SI units should be considered standard. The values given in parentheses are for reference only.

1.5 This standard is not intended to address all safety issues, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

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