C103 Copper Wire

C103 Copper wire or 2.0040 (which has as a minimum copper content of 99.95%) is a commercially pure grade of copper that is subject to a special manufacturing process that gives the material an oxygen-free finish. Oxygen free copper ensures high levels of electrical conductivity can be achieved whilst offering a low susceptibility to hydrogen embrittlement when heated in a reducing atmosphere. This makes this type of copper suitable for various types of welding.


Round Wire0.10 – 12.00 mm dia.
Shaped WireUpto 45 mm2 area
Flat WireThinnest 0.15 mm, Widest 12.00 mm

Condition 1:AnnealedThe material has been supplied in the fully softened
Condition 2:Light DrawnThe material has been lightly drawn "skin passed" after annealing
Condition 3:Hard DrawnThe material has been drawn hard with either a bright surface or a soap coated surface
Condition 4:Specified TensileThe material has been drawn to your desired tensile range

Also known as

  • C103
  • Cu-OF
  • 2.0040
  • CW008A

    Available in

    • Round Wire
    • Shaped Wire


    • Cold Formed Parts

    • Conductors

    • Connectors

    • Electronics

    • General Engineering

    • Heat Exchangers


    • In Coil
    • In Lengths
    • On Formers
    • On Spools

    Applicable Standards

    • EN13602
    • BS4109
    • BS2873

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