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    ASTM B490 - 09(2021)

    Standard Practice for Micrometer Bend Test for Ductility of Electrodeposits

    Active Standard ASTM B490 | Developed by Subcommittee: B08.10

    Book of Standards Volume: 02.05


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    Significance and Use

    4.1 This practice is useful as one method of controlling some electroplating solutions. It serves to indicate the presence of contamination or some other adverse condition.

    4.2 Ductility measurements are of particular value when electroplated parts are to be subjected to moderate stress such as that involved in bolting an electroplated bumper to an automobile or when exposed to a wide range of fluctuating temperatures (thermal shock).

    1. Scope

    1.1 This practice describes a procedure for measuring the ductility of electrodeposited foils.2

    1.2 This practice is suitable only for the evaluation of electrodeposits having low ductility.

    1.3 The obtained ductility values must only be considered semi-quantitative because this test has a significant operator dependence.

    1.4 This practice is best used for in-house process control where measurements are always made by the same operator. A change in ductility value can be used as an indication of possible changes in the electroplating solution.

    1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.6 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.

    1.7 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.


    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

    B456 Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium


    ICS Code

    ICS Number Code 17.040.20 (Properties of surfaces); 25.220.40 (Metallic coatings)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0490-09R21

    Citation Format

    ASTM B490-09(2021), Standard Practice for Micrometer Bend Test for Ductility of Electrodeposits, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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