What Types of Aluminum Alloys can Be Anodized?
Although most levels of aluminum have sufficient appearance and corrosion resistance in many cases, it is sometimes necessary to further improve these properties. This can be achieved by a process called anodized oxidation. Anodizing is a metal coating process that increases the content of alumina on the surface of the aluminum substrate, thereby potentially increasing its corrosion resistance and changing its appearance. Although many different aluminum alloys can be anodized, some aluminum alloys are more suitable for this process than other aluminum alloys.
Most Suitable Anodized Aluminum Alloys
All of the following aluminum circle, aluminum coil and aluminum plates are suitable for the anodic oxidation process:
5xxx series
The alloy ingredient of the series is manganese. When the anode oxidation is performed, the 5xxx series alloy (e.g., 5052) has a rugged and transparent resulting oxide layer. Common products of this series include buildings, welding and lighting applications. They are an excellent candidate for anode oxidation.
However, when the anodized process is performed on the 5xxx series alloys, some important considerations are required. For example, some alloying elements, such as manganese and silicon, must be maintained within a certain range. The anodized process used is also important. These alloys can usually be replaced with a 4xxx series alloys, which are used to weld the fill metal to make the resulting welds and the remainder of the anode alumina assembly without different colors.
6xxx series
The 6xxx series of alloy components is magnesium and silicon. These alloys are an excellent candidate material for anodizing. The oxide layer after the anodization treatment is transparent and provides excellent protection. Since the 6xxx series alloy including 6061 (Bar), 6061 (tube), 6061 (board), 6063 (BAR), and 6063 (tube) has excellent mechanical properties and is easy to oxidize, so they are often used in construction and structures.
7xxx series
This series of alloy aluminum is a major alloy element with zinc. It enters the anodized process well. The subsequent oxide layer is transparent and provides good protection. It is usually used in automotive applications. If the zinc content is too large, the oxide layer produced by the anodized oxidation becomes brown.
Anodized Aluminum Service Provider
There are many benefits to using anodized aluminium. Anodized aluminium is a highly specialized product with many custom features. Lanren Aluminium proudly has trustworthy resources, our cooperation with it can create custom solutions for customers who need such services.
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