C106 / CW024A / DHP Copper

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Phosphorus Deoxidised Non Arsenical Copper C106 / CW024A is the standard commercial grade of copper where the oxygen content is significantly lowered by a controlled addition of phosphorus during the melting cycle. A slight excess of phosphorus ensures complete removal of any oxide. The residual phosphorus remains alloyed with the copper within the specified range 0.013-0.050%.

The copper content of C106 is 99.85% minimum. This is the preferred grade for non-electrical purposes such as fasteners, roofing sheet, plumbing tube and other general engineering and constructional applications. The alloy comes into its own where the manufacture of the component or plant involves welding or brazing. This grade of copper is not susceptible to hydrogen embrittlement which can be a serious risk with non-deoxidised grades.

Chemical Composition

Copper

99.85% min

Oxygen

0.013 – 0.050 %

Total Imps

0.06% max

Related Specifications

C106

CW024A

C12200

Cu-DHP 

Key Features

  • Very good electrical and thermal conductivity values
  • Non-magnetic & spark resistant
  • Good corrosion resistance
  • Excellent formability
  • Excellent joining properties
  • Ideal for plating and polishing

Typical Physical Properties

Melting Point

1083°C

Density

8.9 g/cm³

Specific heat

385 J/Kg °K

Thermal conductivity

340 W/m°C

Thermal expansion coefficient (20-200°C)

17.3 x 10-6 °C

Electrical conductivity

90 % IACS

Electrical resistivity

0.0246 microhm m

Modulus of elasticity

130000 N/mm²

Fabrication Properties

Hot Working Temperature Range

750-950°C

Hot Formability

Good

Cold Formability

Excellent

Cold reduction between anneals

95% max.

Machinability rating (free cutting brass = 100)

20%

Bendability (Gilding Brass 95%)

70%

Joining Methods

Soldering

Excellent

Brazing

Excellent

Oxy-acetylene welding

Good

Gas-shielded arc welding

Excellent

Resistance welding:   Spot and Seam                                       Butt                      

Fair

 

Good           

Typical Applications

Roofing sheet, heat exchanger plant, calorifiers, chemical plant, storage tanks, architectural metalwork, air conditioning equipment and pipe work, central heating systems, refrigeration plant, chemical pipe work, water and gas installations and tubing, soil and waste disposal, marine and general engineering fasteners, masonry fixings and numerous other applications where the excellent workability, joining properties, thermal conductivity and corrosion resistance to many process environments is unique.

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