Norm

ASTM B867-95(2013)

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

54,27

Over deze norm

Status Definitief
Aantal pagina's 10
Commissie B08.03
Gepubliceerd op 01-12-2013
Taal Engels

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

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 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 and health practices and determine the applicability of regulatory limitations prior to use.

Details

ICS-code 25.220.40
Nederlandse titel Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use
Engelse titel Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use

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