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ASTM B920-01(2006)

Historical Reaffirmation

Standard Practice for Porosity in Gold and Palladium Alloy Coatings on Metal Substrates by Vapors of Sodium Hypochlorite Solution

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1.1 This test practice covers equipment and methods for revealing the porosity of gold and palladium coatings, particularly electrodeposits and clad metals used on electrical contacts.

1.2 This test practice is suitable for coatings containing gold or 75 % by mass of palladium on substrates of copper, nickel, and their alloys, which are commonly used in electrical contacts.

1.3 A variety of full porosity testing methods is described in the literature., These porosity Test Methods are B 735, B 741, B 798, B 799, and B 809. An ASTM Guide to the selection of porosity tests for electrodeposits and related metallic coatings is available as Guide B 765.

1.4 The values stated in SI units are to be regarded as 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, see Section 6.


SDO ASTM: ASTM International
Document Number B920
Publication Date Dec. 1, 2006
Language en - English
Page Count 4
Revision Level 01(2006)
Supercedes
Committee B02.11
Publish Date Document Id Type View
Oct. 1, 2016 B0920-16 Revision
Dec. 1, 2006 B0920-01R06E01 Revision
Nov. 10, 2001 B0920-01 Revision
Oct. 1, 2022 B0920-16R22 Reaffirmation
Oct. 1, 2011 B0920-01R11 Reaffirmation
Dec. 1, 2006 B0920-01R06 Reaffirmation