Properties of copper and copper alloys
Article REF: M4640 V1

Properties of copper and copper alloys

Authors : Dominique ARNAUD, Jean BARBERY, Roger BIAIS, Bernard FARGETTE, Pierre NAUDOT

Publication date: April 10, 1985 | Lire en français

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AUTHORS

  • Dominique ARNAUD: Head of the Research Laboratories Department at the Centre Technique des Industries de la Fonderie (CTIF)

  • Jean BARBERY: Arts et Manufactures engineer - Head of the Metallurgy Department at the Tréfimétaux Research Center

  • Roger BIAIS: Engineer from the Conservatoire National des Arts et Métiers - Former engineer at Tréfimétaux's research center

  • Bernard FARGETTE: Doctor-Engineer - Engineer, Tréfimétaux Research Center

  • Pierre NAUDOT: Arts et Manufactures engineer - Chief Engineer, Tréfimétaux Research Center

 INTRODUCTION

The range of copper alloys is extremely rich in terms of the variety and combination of additions used, and also in terms of their often high proportions (50% maximum, however). Before the 1939-1945 war, at least 300 different alloys were routinely produced, not counting many other compositions that have scarcely progressed beyond the experimental stage. Since then, there has been a continuous effort to rationalize both technically and economically, with a bias towards alloys with a combination of properties that make them particularly effective for one or more major applications, and the abandonment of those of marginal interest.

Relative conductivity C is the percentage conductivity of the material in question in relation to a reference copper with resistivity ρ20 equal to 1.724 1 × 10 – 8 Ω⋅m (or conductivity 58.0 MS/m) at 20°C in the annealed state. This copper-specific value is expressed in % IACS : C(% IACS)=1,724 1ρ(μΩ⋅cm)×100

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