C110 / CW009A / OFE Copper

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C110 / CW009A is a very high purity certified grade of oxygen free copper for electronic type applications. The material is manufactured from pure cathode copper and poured in a protective gas atmosphere. It has a minimum copper content of 99.99% and offers a minimum electrical conductivity of 101.5% IACS. To ensure a resistance to hydrogen embrittlement the maximum oxygen content is restricted to 5 ppm with other individual impurity values limited to 25 ppm.

The combination of the highest available thermal and electrical conductivity values, an excellent formability, an adherent oxide film and excellent joining/welding properties it can be utilised in the electrical and high vacuum industries as well. 

Chemical Composition

Copper                  

99.99% min

Phosphorus             

0.0003% max

Sulphur                  

0.002% max

Lead                      

0.001% max

Total Others              

0.0050% max  (incl. As, SB, Bi, Cd, Mn, Se, Te, Zn - no single impurity shall exceed 0.0025%)

Related Specifications

C110

CW009A

C10100 OFE

Cu-OFE

BS3839

Cu-C2

Key Features

  • Very High Purity
  • Highest Conductivity Values
  • Excellent formability
  • Freedom from Hydrogen Embrittlement
  • Excellent Joining Characteristics

Typical Physical Properties

Melting Point

1083°C

Density

8.94 g/cm³

Specific heat

385 J/Kg °K

Thermal conductivity

399 W/m°C

Thermal expansion coefficient (20-200°C)

17.3 x 10-6

Electrical conductivity

101.5 % IACS

Electrical resistivity

0.017 microhm m

Modulus of elasticity

118000 N/mm²

Fabrication Properties

Hot Working Temperature Range

600-800°C

Hot Formability

Good

Cold Formability

Excellent

Cold reduction between anneals

95% max.

Machinability rating (free cutting brass = 100)

20%

Joining Methods

Soldering

Excellent

Brazing

Excellent

Oxy-acetylene welding                           

Good

Gas-shielded arc welding              

Excellent

Resistance welding:   Spot and Seam                                     Butt

Not recommended

Good  

Typical Uses:

Traditional uses for C110 / CW009A OFE copper include material for vacuum capacitors and circuit breakers, gaskets for vacuum apparatus, magnetrons, bases for semi-conductors, electronic components, anodes, electrical instruments, rotor conductors for large capacity generators and motors, electrical and electronic components at cryogenic temperatures.

This technical information is given by Holme Dodsworth Metals without charge and the user shall employ such information at their own discretion and risk. For more detailed technical advice on temper selection, fabrication, joining, machining, physical and mechanical data please contact us as space does not permit the listing of every feature of the material.

 

 

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Holme Dodsworth Metals Limited.
59/69 Heaton Park Road.
Newcastle Upon Tyne NE6 1SQ
Registered in England. Company No. 00842702