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ASTM B 809 Document Information:
Title
Standard Test Method for Porosity in Metallic Coatings by Humid Sulfur Vapor ( Flowers-of-Sulfur )
ASTM International
Publication Date:
Oct 10, 1995
Scope:
This standard covers equipment and test methods for determining the
porosity of metallic coatings,
where the pores penetrate down to a silver, copper, or copper-alloy
substrate.
This test method is suitable for coatings consisting of single or
combined layers of any coating
that does not significantly tarnish in a reduced sulfur atmosphere,
such as gold, nickel, tin,
tin-lead, and palladium, or their alloys.
This test method is designed to determine whether the porosity level
is less than or greater than
some value which by experience is considered by the user to be
acceptable for the intended
application.
Recent reviews of porosity testing and testing methods can be found in
the literature. Guide B 765
is suitable to assist in the selection of porosity tests for
electrodeposits and related metallic
coatings. Other porosity test standards are Test Methods B 735, B 741,
B 798, and B 799.
The values stated in SI units are to be regarded as the standard. The
values given in parentheses
are for information only.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use. For
specific hazards statements, see Section 8.
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