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Comparative study of electrical and mechanical properties of fire-refined and electrolytically refined cold-drawn copper wires

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Abstract

A comparison is made between FRHC (fire-refined high-conductivity) and ETP (electrolytically tough pitch) copper wire in cold-drawn samples. Conductivity and mechanical properties are evaluated as a function of the annealing temperature. The fire-refined copper samples with controlled amounts of impurities show the higher annealing temperatures needed to achieve the 100.0% IACS (International Annealed Copper Standard) required to be an electrical conductor. Nevertheless, FRHC copper keeps its mechanical properties for a wider range of annealing temperatures than ETP copper, thereby becoming an interesting alternative for some industrial applications such as trolley wire or fire detection systems. The applicability as trolley wire is evaluated by comparing ETP copper with commercial grades, and an electrical conductivity-tensile strength chart for this application is presented.

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Authors and Affiliations

  1. Department of Materials Science and Metallurgical Engineering, University of Barcelona, Martí i Franqués 1, 08028, Barcelona, Spain

    Mònica Martínez, Ana I. Fernández, Mercè Segarra, Helena Xuriguera & Ferran Espiell

  2. La Farga Lacambra, SAU, Ctra.C-17, Km.73.5, Les Masies de Voltregà, 08509, Barcelona, Spain

    Núria Ferrer

Authors
  1. Mònica Martínez
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  2. Ana I. Fernández
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  3. Mercè Segarra
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  4. Helena Xuriguera
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  5. Ferran Espiell
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  6. Núria Ferrer
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Corresponding author

Correspondence to Ferran Espiell.

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Martínez, M., Fernández, A.I., Segarra, M. et al. Comparative study of electrical and mechanical properties of fire-refined and electrolytically refined cold-drawn copper wires. J Mater Sci 42, 7745–7749 (2007). https://doi.org/10.1007/s10853-007-1647-1

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  • DOI: https://doi.org/10.1007/s10853-007-1647-1

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