ASTM B193 - 02(2014)

    Standard Test Method for Resistivity of Electrical Conductor Materials

    Active Standard ASTM B193 | Developed by Subcommittee: B01.02

    Book of Standards Volume: 02.03


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    Abstract

    This test method covers the determination of the electrical resistivity of metallic electrical conductor material. Weight resistivity accuracy may be adversely affected by possible inaccuracies in the assumed density of the conductor. The definition of resistivity and the equations for calculating volume resistivity and weight resistivity are given. Resistance shall be measured using an apparatus with a circuit configuration and instrumentation that has a resistance measurement capability of the prescribed accuracy. The test specimen requirements and the test procedure including: (1) determination of dimensions (such as length and cross-section), weight, and density, and (2) resistance measurement are detailed. The formula for calculating the corrected resistance, when the measurement is made at any temperature other than a reference temperature, is given. No statement of precision has been made and no work has been planned to develop such a statement. This test method has no bias because the value for resistivity is determined solely in terms of this test method.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This test method covers the determination of the electrical resistivity of metallic electrical conductor material. It provides for an accuracy of ±0.30 % on test specimens having a resistance of 0.00001 Ω (10 μΩ) or more. Weight resistivity accuracy may be adversely affected by possible inaccuracies in the assumed density of the conductor.

    1.2 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.

    NIST Document

    NBS Handbook 100 --Copper Wire Tables Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.

    ASTM Standards

    A111 Specification for Zinc-Coated (Galvanized) Iron Telephone and Telegraph Line Wire

    A326 Specification for Zinc-Coated (Galvanized) High Tensile Steel Telephone and Telegraph Line Wire

    B9 Specification for Bronze Trolley Wire

    B105 Specification for Hard-Drawn Copper Alloy Wires for Electric Conductors

    B298 Specification for Silver-Coated Soft or Annealed Copper Wire

    B355 Specification for Nickel-Coated Soft or Annealed Copper Wire

    B415 Specification for Hard-Drawn Aluminum-Clad Steel Wire

    B566 Specification for Copper-Clad Aluminum Wire

    B800 Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes--Annealed and Intermediate Tempers


    ICS Code

    ICS Number Code 21.060.30 (Washers, locking elements)

    UNSPSC Code

    UNSPSC Code 26121500(Electrical wire)


    Referencing This Standard

    DOI: 10.1520/B0193

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM B193-02(2014), Standard Test Method for Resistivity of Electrical Conductor Materials, ASTM International, West Conshohocken, PA, 2014, www.astm.org

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