ASTM B867-95(2008)

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

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    1. Scope

    1.1 CompositionThis 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 PropertiesPalladium 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 50250
    Palladium 75600
    Platinum150550
    Palladium-Nickel300650
    Rhodium 7501100
    Ruthenium6001300

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B183 Practice for Preparation of Low-Carbon Steel for Electroplating

    B242 Guide for Preparation of High-Carbon Steel for Electroplating

    B254 Practice for Preparation of and Electroplating on Stainless Steel

    B281 Practice for Preparation of Copper and Copper-Base Alloys for Electroplating and Conversion Coatings

    B322 Guide for Cleaning Metals Prior to Electroplating

    B343 Practice for Preparation of Nickel for Electroplating with Nickel

    B374 Terminology Relating to Electroplating

    B481 Practice for Preparation of Titanium and Titanium Alloys for Electroplating

    B482 Practice for Preparation of Tungsten and Tungsten Alloys for Electroplating

    B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section

    B488 Specification for Electrodeposited Coatings of Gold for Engineering Uses

    B489 Practice for Bend Test for Ductility of Electrodeposited and Autocatalytically Deposited Metal Coatings on Metals

    B507 Practice for Design of Articles to Be Electroplated on Racks

    B542 Terminology Relating to Electrical Contacts and Their Use

    B558 Practice for Preparation of Nickel Alloys for Electroplating

    B568 Test Method for Measurement of Coating Thickness by X-Ray Spectrometry

    B571 Practice for Qualitative Adhesion Testing of Metallic Coatings

    B602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings

    B697 Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings

    B741 Test Method for Porosity In Gold Coatings On Metal Substrates By Paper Electrography

    B748 Test Method for Measurement of Thickness of Metallic Coatings by Measurement of Cross Section with a Scanning Electron Microscope

    B762 Test Method of Variables Sampling of Metallic and Inorganic Coatings

    B765 Guide for Selection of Porosity and Gross Defect Tests for Electrodeposits and Related Metallic Coatings

    B798 Test Method for Porosity in Gold or Palladium Coatings on Metal Substrates by Gel-Bulk Electrography

    B799 Test Method for Porosity in Gold and Palladium Coatings by Sulfurous Acid/Sulfur-Dioxide Vapor

    B809 Test Method for Porosity in Metallic Coatings by Humid Sulfur Vapor (Flowers-of-Sulfur)

    B827 Practice for Conducting Mixed Flowing Gas (MFG) Environmental Tests

    B845 Guide for Mixed Flowing Gas (MFG) Tests for Electrical Contacts

    B849 Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement

    B850 Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement

    D1125 Test Methods for Electrical Conductivity and Resistivity of Water

    D3951 Practice for Commercial Packaging


    ICS Code

    ICS Number Code 25.220.40 (Metallic coatings)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/B0867-95R08

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