Description of Aluminium-Copper (Al-Cu) Master Alloys
Al-Cu alloys constitute the first aluminium casting alloys employed in industry. They utilise a straightforward casting process, yield machining performance that meets industry specifications and display thermal resistance within required limits. However, the alloy exhibits limited castability, and a marked potential difference exists between the copper‐rich phase and the substrate, which results in reduced corrosion resistance and increased density.
Specifications of the Aluminium-Copper (Al-Cu) Master Alloy
Element (%)
|
50Al-50Cu
|
Aluminium
|
47-52%
|
Cobalt
|
-
|
Copper
|
47-52%
|
Silicon
|
0.25% maximum
|
Zirconium
|
-
|
Boron
|
-
|
Carbon
|
-
|
Iron
|
0.50% maximum
|
Lead
|
0.10% maximum
|
Manganese
|
0.25% maximum
|
Magnesium
|
-
|
Nickel
|
-
|
Sulphur
|
-
|
Zinc
|
0.10% maximum
|
Nitrogen
|
-
|
Oxygen
|
-
|
Applications of Aluminium-Copper (Al-Cu) Master Alloys
The Aluminium-Copper master alloy is used to introduce copper during the melting process of aluminium alloys. The addition operates at a low temperature, and the composition is precisely controlled. It also serves as an economical alternative to copper wire. The alloy can be processed into sheets, forgings, structural components for aerospace, electrode solder, finished products and piston heads for engines.
Packaging of Aluminium-Copper (Al-Cu) Master Alloys
All packaging materials are suitable for air, sea and road freight. For selected alloys, vacuum packaging is available. Care is taken to ensure that no damage occurs during storage or transport.