ASTM E 430 Standard Test Methods for Measurement of Gloss of High-Gloss Surfaces by Abridged Goniophotometry
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ASTM E 430 Document Information:
Title
Standard Test Methods for Measurement of Gloss of High-Gloss Surfaces by Abridged Goniophotometry
ASTM International
Publication Date:
Jun 1, 2005
Scope:
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.
As originally developed by Tingle and others (see Refs 1 and
2),(Footnote 2) the test methods were
applied only to bright metals. Recently they have been applied to
high-gloss automotive finishes
and other nonmetallic surfaces.
Footnote 2 - The boldface numbers in parentheses refer to the list of
references at the end of this
method.
Keywords:
- distinctness of image
- goniophotometry
- reflection characteristics
- reflection haze
- sheen
- specular gloss
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