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    ASTM B689-97(2003)

    Standard Specification for Electroplated Engineering Nickel Coatings

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    1. Scope

    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.

    1.2 Electroplating of nickel for engineering applications (Note 1) requires technical considerations significantly different from decorative applications because the following functional properties are important:

    1.2.1 Hardness, strength, and ductility,

    1.2.2 Wear resistance,

    1.2.3 Load bearing characteristics,

    1.2.4 Corrosion resistance,

    1.2.5 Heat scaling resistance,

    1.2.6 Fretting resistance, and

    1.2.7 Fatigue resistance.

    Note 1—Functional electroplated nickel coatings usually contain about 99 % nickel, and are most frequently electrodeposited from a Watts nickel bath or a nickel sulfamate bath. Typical mechanical properties of nickel electroplated from these baths, and the combined effect of bath operation and solution composition variables on the mechanical properties of the electrodeposit are given in Guide B 832. When electroplated nickel is required to have higher hardnesses, greater wear resistance, certain residual stress values and certain leveling characteristics, sulfur and other substances are incorporated in the nickel deposit through the use of certain addition agents in the electroplating solution. For the effect of such additives, see Section 4 and Annex A3. Cobalt salts are sometimes added to the plating solution to produce harder nickel alloy deposits.

    1.3 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

    B252 Guide for Preparation of Zinc Alloy Die Castings for Electroplating and Conversion Coatings

    B253 Guide for Preparation of Aluminum Alloys 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

    B602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings

    ICS Code

    ICS Number Code 25.220.40 (Metallic coatings)

    UNSPSC Code

    UNSPSC Code

    Referencing This Standard

    DOI: 10.1520/B0689-97R03

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM B689-97(2003), Standard Specification for Electroplated Engineering Nickel Coatings, ASTM International, West Conshohocken, PA, 2003,

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