Nov 20 2012
Topics Covered
Introduction
Chemical Composition
Applications
Introduction
Master alloys are semi-finished products, and can be formed in different shapes. They are defined as a pre-alloyed mixture of alloying elements. They are also known as modifiers, hardeners, or grain refiners. They are added to a melt to achieve a desired result. They are used instead of a pure metal because they are very economical.
The following datasheet discusses copper-magnesium master alloy in more detail.
Chemical Composition
The following table shows the chemical composition of copper-magnesium master alloy.
|
Element |
Content (%) |
|
Copper, Cu |
89-91 |
|
Magnesium, Mg |
9-11 |
|
Silicon, Si |
0.15 |
|
Manganese, Mn |
0.1 |
|
Zinc, Zn |
0.1 |
|
Nickel, Ni |
0.1 |
|
Tin, Sn |
0.05 |
|
Phosphorous, P |
0.05 |
|
Lead, Pb |
0.05 |
|
Iron, Fe |
0.02 |
|
Arsenic, As |
0.01 |
Applications
Copper-magnesium master alloy is used as a nodularizer in ductile SG iron. It can be also used for improving mechanical properties of low alloyed copper, and alloying magnesium into low alloyed wrought copper-magnesium alloys.