ASTM B33 - 10(2014)

    Standard Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes

    Active Standard ASTM B33 | Developed by Subcommittee: B01.04

    Book of Standards Volume: 02.03


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    Abstract

    This specification covers tinned, round, soft, or annealed copper wire for electrical purposes. The tinned wire shall conformto the required tensile strength and elongation. Electrical resistivity shall be measured. The wire sizes shall be expressed as the diameter of the wire and shall be measured using micrometre caliper equipped with a vernier. The tin coating shall be continuous. The continuity of the wire shall be determined on representative samples taken before stranding or insulating. The continuity of tinning shall be determined by the hydrochlroic acid-sodium polysulfide test. The tin coating shall be firmly adherent to the surface of the copper. The adherence of coating on the wire shall be determined on representative samples taken before stranding or insulating. The adherence of coating shall be determined by the wrapping and immersion test.

    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 specification covers tin-coated, round, soft, or annealed copper wire for electrical purposes.

    1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.2.1 Exceptions—The SI values for density, resistivity, and volume are to be regarded as standard.

    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

    B49 Specification for Copper Rod Drawing Stock for Electrical Purposes

    B193 Test Method for Resistivity of Electrical Conductor Materials

    B258 Specification for Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors

    Other Document

    NBSHandbook100 Copper Wire Tables


    ICS Code

    ICS Number Code 29.060.10 (Wires)

    UNSPSC Code

    UNSPSC Code 26121517(Copper wire)


    DOI: 10.1520/B0033-10R14

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