7 Aluminum Alloys that Can be Anodized

7 Aluminum Alloys that Can be Anodized

Anodized aluminum is an imperative standard aluminum that’s been water-logged and processed in electrolyte chemicals. As soon as the aluminum is kept in the electrolyte bath, an electric current is applied, thus triggering a chemical reaction that leads to the creation of a thicker layer of oxide over the aluminum. The anodized aluminum is quite beneficial, such as resistant to corrosion, offers greater adhesion, can easily be dyed to produce colored aluminum products, etc. Here are described the 7 main series types that describe the encounter when the aluminum alloy is anodized.

1XXX Series

The 1xxx series covers pure aluminum. After anodizing, the resultant layer formed of aluminum oxide is clear and somewhat shiny.

2XXX Series

The 2xxx series is employed to designate aluminum alloyed with copper. In these alloys, copper creates a robust and hard aluminum alloy.

3XXX Series

In the 3xxx series, aluminum is alloyed with manganese. While this anodized layer renders decent protection for the manganese-alloyed aluminum substrate, it forms an undesirable brown color.

4XXX Series

This 4th series comprises aluminum alloyed with silicon. This anodize material formed is well protected by the aluminum oxide layer produced from the anodizing process.

5XXX Series

In this series, aluminum is alloyed with manganese. As it is anodized, the alloys in the 5XXX series have a resultant oxide layer that is sturdier and clear. These are the optimal candidates for anodizing.

6XXX Series

The 6XXX series involves aluminum alloyed with magnesium and silicon. These alloys are perfect candidates for anodizing. The oxide layer following the anodizing process is transparent and offers supreme protection. Since the 6XXX series alloys render excellent mechanical properties and are readily anodized, the anodizing aluminum manufacturer uses them for structural applications.

7XXX Series

The 7xxx series of alloyed aluminum employ zinc as its main alloying element. It takes to the anodizing method very well. The succeeding oxide layer is clear and renders amazing protection. If the zinc level becomes extreme, the oxide layer made by anodization can turn brown.