ASTM B48-00

    Standard Specification for Soft Rectangular and Square Bare Copper Wire for Electrical Conductors

    SUPERSEDED (see Active link, below)


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    1. Scope

    1.1 This specification covers soft or annealed bare copper wire, rectangular or square in shape with rounded corners (Explanatory Note 1).

    1.2 For the purpose of this specification, the wire is classified as follows:

    1.2.1 Type A -For all applications except those involving edgewise bending.

    1.2.2 Type B -For applications involving edgewise bending. Type B wire of thickness less than 0.020 in. (0.51 mm) or with a ratio of width to thickness greater than 30 to 1 is not contemplated in this specification.

    1.3 Unless otherwise specified by the purchaser, Type A material shall be furnished.

    1.4 For referee purposes, inch-pound units shall be used throughout this specification, except for Sections 12 and 13.


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

    Other Documents

    NBSHandbook100 Copper Wire Tables Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460..

    ASTM Standards

    B49 Specification for Copper Rod Drawing Stock for Electrical Purposes

    B193 Test Method for Resistivity of Electrical Conductor Materials

    B279 Test Method for Stiffness of Bare Soft Square and Rectangular Copper and Aluminum Wire for Magnet Wire Fabrication

    E8 Test Methods for Tension Testing of Metallic Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications


    ICS Code

    ICS Number Code 29.060.10 (Wires)

    UNSPSC Code

    UNSPSC Code 26121517(Copper wire)


    DOI: 10.1520/B0048-00

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