It is believed that copper has been mined for over 5000 years. It can be found in elemental form and in the minerals cuprite, malachite, azurite, chalcopyrite and bornite. Copper is also often found as a by-product of silver production.
Copper, Brass & Bronze alloys explained
Basic Copper Properties
Next to silver, copper is the next best conductor. It is a yellowish red metal that polishes to a bright metallic lustre. It is tough, ductile and malleable. Copper has a disagreeable taste and a peculiar smell.
Copper is resistant to corrosion in most atmospheres including marine and industrial environments. It is corroded by oxidising acids, halogens, sulphides and ammonia based solutions.
Alloy C106
Copper alloy C106 is phosphorous de-oxidised non-arsenical copper that is 99.85% pure.
Chemical Composition of Copper alloy C106
Table 1. Typical chemical composition for copper alloy C106
|
%
|
C106
|
|
Others (Total)
|
0.0-0.10
|
|
Copper (Cu)
|
Balance
|
Properties of Copper alloy C106
Mechanical Properties of Copper alloy C106
Table 2. Typical mechanical properties for copper alloy C106
|
Grade
|
C106
|
|
Tensile Strength
|
200 - 360 MPa
|
|
Proof Stress
|
50 - 340 MPa
|
|
Elongation A50 mm
|
50 - 5 %
|
|
Hardness Vickers
|
40 - 110 Hv
|
Physical Properties of Copper alloy C106
Table 3. Typical physical properties for copper alloy C106
|
Property
|
Value
|
|
Density
|
8.92 g/cm3
|
|
Melting Point
|
1083 °C
|
|
Modulus of Elasticity
|
117 GPa
|
|
Electrical Resistivity
|
0.203 x 10-6 Ω.m
|
|
Thermal Conductivity
|
391.2 W/m.K
|
|
Thermal Expansion
|
16.9 x 10-6/K
|
Alloy Designations
Phosphorous de-oxidised non-arsenical copper corresponds to the following standard designations and specifications:
|
CEN
|
BS
|
UNS
|
ISO
|
|
CW024A
|
C106
|
C12200
|
Cu-DHP
|
Corrosion Resistance of Copper alloy C106
Corrosion resistance is either good or excellent in most environments and atmospheres other than those containing ammonia ions.
Fabrication of Copper alloy C106
Cold Working of Copper alloy C106
Copper alloy C106 has an excellent response to cold working.
Hot Working of Copper alloy C106
With forging of brass rated as 100, the hot forgeability of Copper alloy C106 is rated at 65. Hot working temperatures should be between 760 and 870°C
Heat Treatment of Copper alloy C106
Solution treatment or annealing can be done by rapid cooling after heating to 370-650°C.
Machinability
This alloy has a machinability rating of 20 when Alloy 360 FC Brass is 100.
Welding of Copper alloy C106
Deoxidation of Copper alloy C106 improves embrittlement resistance during welding.
Brazing and soldering are both excellent joining methods for Copper alloy C106. Gas shielded arc welding is also excellent. Oxyacetylene welding and butt welding are good. Welding methods not recommended include:
- Coated metal arc welding
- Spot welding
- Seam welding
Applications of Copper alloy C106
Copper alloy C106 is typically used in applications like:
- Refrigeration
- Gutters and roofing
- Gas plants
- Busbars
- Hydraulic, air and oil lines
- Air Conditioning and refrigeration
- Heater units and burners tubes Consumer
- Plumbing pipe and fittings
Supplied Form
Copper alloy C106 is typically supplied by Aalco in the following forms:
- Round tube
- Sheet – Half Hard
- Sheet – Soft
DISCLAIMER
This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with temper, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be accepted by the Company is respect of any action taken by any third party in reliance thereon.
As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose.
Any advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. Any contract between the Company and a customer will be subject to the company’s Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.
This information has been sourced, reviewed and adapted from materials provided by Aalco - Ferrous and Non-Ferrous Metals Stockist.
For more information on this source, please visit Aalco - Ferrous and Non-Ferrous Metals Stockist.