ASTM-D4449 Standard Test Method for Visual Evaluation of Gloss Differences Between Surfaces of Similar Appearance

ASTM-D4449 - 2015 EDITION - CURRENT
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Standard Test Method for Visual Evaluation of Gloss Differences Between Surfaces of Similar Appearance
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Scope

1.1 This test method covers the visual evaluation of gloss differences of coating surfaces, using special types of lamps for illumination. It identifies six aspects or types of gloss that one may look for when using the lamp to assess gloss differences between surfaces. It describes the conditions for using the lamps to best identify small differences in each of the six types of gloss. Four levels of visual gloss differences are distinguished.

1.2 While this technique is useful for both weathered and unweathered specimens, it has not been applied to metallics.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

distinctness of image; gloss; haze; visual gloss;; ICS Number Code 87.040 (Paints and varnishes)

To find similar documents by ASTM Volume:

06.01 (Paint -- Tests for Chemical, Physical, and Optical Properties; Appearance)

To find similar documents by classification:

87.040 (Paints and varnishes Including coating powders, paint coatings and protective paint systems)

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Document Number

ASTM-D4449-15

Revision Level

2015 EDITION

Status

Current

Modification Type

Revision

Publication Date

June 1, 2015

Document Type

Test Method

Page Count

8 pages

Committee Number

E12.11