ASTM D4449-90(2004)

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Standard Test Method for Visual Evaluation of Gloss Differences Between Surfaces of Similar Appearance
standard by ASTM International, 11/01/2004

Document Format: PDF

Description

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 SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

Product Details

Published:
11/01/2004
Number of Pages:
6
File Size:
1 file , 140 KB
Note:
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