ASTM-B735 › Standard Test Method for Porosity in Gold Coatings on Metal Substrates by Nitric Acid Vapor
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Scope
1.1 This test method covers equipment and procedures for using nitric acid vapor for determining porosity in gold coatings, particularly electrodeposits and clad metals used on electrical contacts.
1.2 This test method is designed to show whether the porosity level is less or greater than some value that, by experience, is considered by the user to be acceptable for the intended application.
1.3 A variety of other porosity testing methods are described in Guide B765 and in the literature. Other porosity test methods are B741, B798, B799, and B809.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.5 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. Specific precautions are given in Section 8 and Note 2.
Keywords
gold coatings; gold platings; nitric acid vapor (porosity) test; plating porosity; pore corrosion test; porosity testing; porosity testing; nitric acid vapor; ICS Number Code 25.220.40 (Metallic coatings)
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Document Number
ASTM-B0735-16R22
Revision Level
2016 R22 EDITION
Status
Current
Modification Type
Reapproval
Publication Date
Nov. 3, 2022
Document Type
Test Method
Page Count
4 pages
Committee Number
B02.11