C101 electrolytic tough pitch (ETP) copper is a commercially pure high conductivity grade of copper. It has a nominal conductivity of 100% IACS (International Annealed Copper Standard) and a high thermal conductivity, making it the material of choice for use in conductors and electrical components.

C101 is refined by electrolytic deposition and then melted and oxidised to the “tough pitch” condition with a controlled low oxygen content. This is the normal grade for general electrical use as busbar, motor and transformer components, windings and many other current carrying applications. Due to oxygen present in the form of Cu2O, this copper is susceptible to hydrogen embrittlement in reducing gases at elevated temperatures. The grade also carries the risk of embrittlement when heating, welding or brazing using an oxy-fuel gas flame.

Related Specifications of C101

  • C11000
  • CW004A
  • BS1432
  • BS1433
  • BS6017
  • 2.0060
  • 2.0065
  • NF A51-118-1
  • Cu-ETP
  • Cu-a1 (FR)
  • E-Cu57 (DE)
  • E-Cu58 (DE)

Nominal Composition of C101

Cu 99.90% min

Key Features of C101

  • High electrical conductivity
  • High thermal conductivity

Applications of C101

Power generation | Cables, overhead line conductors, generator windings, busbars and coaxial lines

Other | All types of cables, overhead line conductors; motor, generator, transformer and instrument windings including enamelled wire, busbars, contacts, household and industrial wiring; switches, terminals, earthing rods, commutator segments, co-axial lines, anodes for electroplating and various other electrical components

Columbia Metals – a leading supplier of C101

With decades of experience and a huge range of stock, Columbia Metals is an industry leader in the supply of C101 and other high quality specialist engineering alloys.

To buy or learn more about C101 contact us now, or fill in the enquiry form on the right hand side and we will be in touch shortly.

  Related Specifications Mechanical Properties
Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB  
Scroll to Top