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ASTM B867-95(2003)

(Specification)

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

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

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).
Note 1—Electroplated deposits generally have a lower density than their wrought metal counterparts.Approximate Hardness (HK25)Gold 50-250Palladium75-600Platinum150-550Palladium-Nickel300-650Rhodium 750-1100Ruthenium600-1300
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.

General Information

Status
Historical
Publication Date
09-Feb-2003
ICS
25.220.40 - Metallic coatings
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.03 - Engineering Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM B867-95 - Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use
Effective Date
10-Feb-2003
Replaced By
ASTM B867-95(2008) - Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use
Effective Date
01-Aug-2008

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ASTM B867-95(2003) - Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering UseASTM B867-95(2003) - Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use
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ASTM B867-95(2003) - Standard Specification for Electrodeposited Coatings of Palladium-Nickel for Engineering Use
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 867 – 95 (Reapproved 2003)
Standard Specification for
Electrodeposited Coatings of Palladium-Nickel for
1
Engineering Use
This standard is issued under the fixed designation B 867; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope B 183 Practice for Preparation of Low-Carbon Steel for
3
Electroplating
1.1 Composition—This specification covers requirements
B 242 Practice for Preparation of High-Carbon Steel for
for electrodeposited palladium-nickel coatings containing be-
3
Electroplating
tween 70 and 95 mass % of palladium metal. Composite
B 254 Practice for Preparation of and Electroplating on
coatings consisting of palladium-nickel and a thin gold over-
3
Stainless Steel
plate for applications involving electrical contacts are also
B 281 Practice for Preparation of Copper and Copper-Base
covered.
3
Alloys for Electroplating and Conversion Coatings
1.2 Properties—Palladium is the lightest and least noble of
3
B 322 Practice for Cleaning Metals Prior to Electroplating
the platinum group metals. Palladium-nickel is a solid solution
B 343 Practice for Preparation of Nickel for Electroplating
alloy of palladium and nickel. Electroplated palladium-nickel
3
with Nickel
alloys have a density between 10 and 11.5, which is substan-
3
B 374 Terminology Relating to Electroplating
tially less than electroplated gold (17.0 to 19.3) and compa-
B 481 Practice for Preparation of Titanium and Titanium
rable to electroplated pure palladium (10.5 to 11.8).This yields
3
Alloys for Electroplating
a greater volume or thickness of coating per unit mass and,
B 482 Practice for Preparation of Tungsten and Tungsten
consequently, some saving of metal weight. The hardness
3
Alloys for Electroplating
rangeofelectrodepositedpalladium-nickelcomparesfavorably
2
B 487 Test Method for Measurement of Metal and Oxide
with electroplated noble metals and their alloys (1, 2).
Coating Thickness by Microscopical Examination of a
NOTE 1—Electroplated deposits generally have a lower density than 3
Cross Section
their wrought metal counterparts.
B 488 Standard Specification for Electrodeposited Coatings
Approximate Hardness (HK )
3
25
of Gold for Engineering Uses
Gold 50–250
B 489 Practice for Bend Test for Ductility of Electrodepos-
Palladium 75–600
Platinum 150–550
ited and Autocatalytically Deposited Metal Coatings on
Palladium-Nickel 300–650
3
Metals
Rhodium 750–1100
B 507 Practice for Design ofArticles to Be Electroplated on
Ruthenium 600–1300
3
Racks
1.3 The values stated in SI units are to be regarded as the
B 542 Terminology Relating to Electrical Contacts and
standard. The values given in parentheses are for information
4
Their Use
only.
B 558 Practice for Preparation of NickelAlloys for Electro-
1.4 This standard does not purport to address all of the
3
plating
safety concerns, if any, associated with its use. It is the
B 568 Test Method for Measurement of Coating Thickness
responsibility of the user of this standard to establish appro-
3
by X-Ray Spectrometry
priate safety and health practices and determine the applica-
B 571 Practice for QualitativeAdhesion Testing of Metallic
bility of regulatory limitations prior to use.
3
Coatings
2. Referenced Documents B 578 Test Method for Microhardness of Electroplated
3
Coatings
2.1 ASTM Standards:
B 602 Test Method for Attribute Sampling of Metallic and
3
Inorganic Coatings
1
This specification is under the jurisdiction of ASTM Committee B08 on B 689 Specification for Electroplated Engineering Nickel
3
Metallic and Inorganic Coatings and is under the direct responsibility of Subcom-
Coatings
mittee B08.08.01 on Engineering Coatings.
Current edition approved Feb. 10, 2003. Published May 2003. Originally
approved in 1995. Last previous edition approved in 1995 as B 867 – 95.
2
The boldface numbers in parentheses refer to the list of references at the end of 3
Annual Book of ASTM Standards, Vol 02.05.
this specification. 4
Annual Book of ASTM Standards, Vol 02.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B 867 – 95 (2003)
TABLE 1 Composition Type
B 697 Guide for Selection of Sampling Plans for Inspection
3
of Electrodeposited Metallic and Inorganic Coatings Type Nominal Composition (Mass %) Range (Mass% Pd)
B 741 Test Methods for Porosity in Gold Coatings on Metal
I 75 % Pd/25 % Ni 70–80 % Pd
4
II 80 % Pd/20 % Ni 75–85 % Pd
Substrates by Paper Electrography
III 85 % Pd/15 % Ni 80–90 % Pd
B 748 Test Method for Measurement of Thickness of Me-
...

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1.1 This specification covers the requirements for electroplated nickel coatings applied to metal products for engineering applications, for example, for use as a buildup for mismachined or worn parts, for electronic applications, including as underplates in contacts or interconnections, and in certain joining applications.  
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