ASTM-E430 › Historical Revision Information
Standard Test Methods for Measurement of Gloss of High-Gloss Surfaces by Abridged Goniophotometry
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Scope
1.1 These test methods cover the measurement of the reflection characteristics responsible for the glossy appearance of high-gloss surfaces. Two test methods, A and B, are provided for evaluating such surface characteristics at specular angles of 30 and 20, respectively. These test methods are not suitable for diffuse finish surfaces nor do they measure color, another appearance attribute.
1.2 As originally developed by Tingle and others (see Refs
Significance and Use
The gloss of metallic finishes is important commercially on metals for automotive, architectural, and other uses where these metals undergo special finishing processes to produce the appearances desired. It is important for the end-products, which use such finished metals that parts placed together have the same glossy appearance.
It is also important that automotive finishes and other high-gloss nonmetallic surfaces possess the desired finished appearance. The present method identifies by measurements important aspects of finishes. Those having identical sets of numbers normally have the same gloss characteristics. It usually requires more than one measurement to identify properly the glossy appearance of any finish (see Refs 3 and 4).
Keywords
distinctness of image; goniophotometry; reflection characteristics; reflection haze; sheen; specular gloss; ICS Number Code 17.040.20 (Properties of surfaces)
To find similar documents by ASTM Volume:
06.01 (Paint -- Tests for Chemical, Physical, and Optical Properties; Appearance)
To find similar documents by classification:
17.040.20 (Properties of surfaces)
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Document Number
ASTM-E430-05
Revision Level
2005 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
June 1, 2005
Document Type
Test Method
Page Count
6 pages
Committee Number
E12.03