Aluminium-Bismuth Master Alloy Description
Master alloys are semi-finished products produced in various forms. They are a pre-alloyed mixture of alloying elements. Depending on the intended use, they are referred to as modifiers, hardeners or grain refiners. These master alloys are employed in aluminium forging alloys and casting alloys to adjust the composition and control the microstructure.
Aluminium-Bismuth master alloys are added to aluminium alloys as a bismuth additive. Bismuth forms a free processing phase that is insoluble in aluminium and does not form intermetallic compounds with aluminium. The resulting heterogeneous phases lead to discontinuities in the matrix.
Stanford Advanced Materials offers a complete range of alloys for the global aluminium industry, including the Aluminium-Bismuth master alloy.
Aluminium-Bismuth Master Alloy Specification
Alloy Grade
|
Chemical Composition (%)
|
Bi
|
Fe (max)
|
Others (max)
|
Al
|
AlBi 3
|
2.5–3.5
|
0.25
|
0.5
|
Balance
|
AlBi 6
|
5.5–6.5
|
0.25
|
0.5
|
Balance
|
AlBi 8
|
7.5–8.5
|
0.25
|
0.5
|
Balance
|
Alloy Grade
|
Density (g/cm³)
|
Melting Point (°C)
|
AlBi 3
|
2.8–2.9
|
640–650
|
AlBi 6
|
3.1–3.2
|
630–640
|
AlBi 8
|
3.3–3.4
|
620–630
|
|
Pack
|
Ingot
|
200 g per ingot or 250 g per ingot
|
20 kg per carton, 1 m per pallet
|
Wire
|
Diameter 9.1–9.9 mm
|
1 m per wooden case
|
Wafer
|
7.5±0.5 kg per wafer
|
1 m per pallet with shrink-wrapped plastic film
|
Aluminium-Bismuth Master Alloy Application
- Hardener: Used to improve the physical and mechanical properties of metal alloys.
- Grain Refiner: Intended to control the dispersion of individual crystals in metals, thereby generating a finer and more uniform grain structure.
- Modifiers and Special Alloys: Typically utilised to increase strength, ductility and machinability.
Packaging of Aluminium-Bismuth Master Alloys
Our Aluminium-Bismuth master alloys are handled with care to minimise damage during storage and transport and to preserve the quality of the product in its original condition.