The annual anodizing capacity at FISA is 13.2 million pounds of extruded aluminum of a length up to 7.3 meters.

Anodizing is an electrochemical process that thickens the oxide film of the aluminum extrusion. The process consists of immersing the extrusion into a solution of pH acid or alkaline while DC current flows through the extrusion. Anodizing improves resistance to corrosion, durability and electrically insulates the surface of the metal.

While the natural oxide film of aluminum is only 0.02 µm, oxide layers between 5 and 25 µm can be obtained through anodizing. FISA guarantees an oxide film between 10 and 25 µm based on the requirements of the product. The corrosive resistance of aluminum increases as the oxide film increases. The anodized layer can be stained in many colors, meaning that aluminum’s natural color can be maintained or a color from a wide range of options can be selected. Some of these colors are different tones of bronze, champagne, gold and black. FISA has all of these colors in mate and polished finishes.