Name: ASTM B 679 : 1998 : R2009
Brand: ASTM
Price: 75.00 USD

ASTM B 679 : 1998 : R2009

Superseded

View Superseded by

Standard Specification for Electrodeposited Coatings of Palladium for Engineering Use

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

09-01-2009

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 02.05, 2017 Includes requirements for electrodeposited palladium coatings containing at least 99.7 mass % of palladium metal.

1.1 This specification covers requirements for electrodeposited palladium coatings containing at least 99.7 mass % of palladium metal. Composite coatings consisting of palladium with a thin gold overplate for applications involving electrical contacts are also covered.

1.2 Properties—Palladium is the lightest and least noble of the platinum group metals. It has a specific gravity of 12.0, which is substantially less than gold (19.3) and platinum (21.5). This yields a greater volume or thickness of coating and, consequently, some saving of metal weight accompanied by a small sacrifice in corrosion resistance and reflectivity. The following table compares the hardness range of electrodeposited palladium with other electrodeposited noble metals and alloys (1,2).

	Approximate Hardness (HK₂₅)
Gold	50–250
Palladium	75–600
Platinum	150–550
Palladium-Nickel	300–650
Rhodium	750–1100
Ruthenium	600–1300

1.3 The values stated in SI units are the preferred values. Values provided in parentheses are for information only.

1.4 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.

Committee	B 08
DocumentType	Standard
Pages	6
ProductNote	Reconfirmed 2009
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM B 679 : 1998 : R2015
Supersedes	ASTM B 679 : 1998 : R2004 : EDT 1

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