ASTM-B867 2023

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B867-95(2023) Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use

Published By	Publication Date	Number of Pages
ASTM	2023	10

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Categories: 25.220.40 - Metallic coatings, ASTM

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Description

ASTM B867-95-Reapproved2023

Active Standard: Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use

ASTM B867

Scope

1.1 Composition—This specification covers requirements for electrodeposited palladium-nickel coatings containing between 70 and 95 mass % of palladium metal. Composite coatings consisting of palladium-nickel and 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. Palladium-nickel is a solid solution alloy of palladium and nickel. Electroplated palladium-nickel alloys have a density between 10 and 11.5, which is substantially less than electroplated gold (17.0 to 19.3) and comparable to electroplated pure palladium (10.5 to 11.8). This yields a greater volume or thickness of coating per unit mass and, consequently, some saving of metal weight. The hardness range of electrodeposited palladium-nickel compares favorably with electroplated noble metals and their alloys (1, 2).2

Note 1: Electroplated deposits generally have a lower density than their wrought metal counterparts.

1.3 The values stated in SI units are to be regarded as the standard. The values given 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

ICS Code

ICS Number Code 25.220.40 (Metallic coatings)

DOI: 10.1520/B0867-95R23

Additional information