Aluminum Glossary

Anodizing

Anodizing is an electrochemical process that transforms the surface of aluminum into a durable, high-performance alumina oxide finish. Integrated into the metal, this finish is resistant to peeling or chipping, offering excellent corrosion resistance and enduring wear and tear. Anodized aluminum is the second-hardest substance known to man, surpassed only by diamond. The porous nature of the metal allows for coloring, sealing, and additional processing as needed.

Billet

A billet is an aluminum log utilized in the extrusion process to create various parts and products.

Casthouse Products

Casthouse products encompass all items manufactured in the casthouse, including extrusion ingots, sheet ingots, foundry alloys, and high-purity aluminum.

Corrosion Resistance

Aluminum’s reaction with oxygen forms a dense oxide layer on its surface, providing exceptional corrosion protection. This oxide layer is self-repairing if damaged.

Extrusion

The extrusion process involves heating an aluminum billet and forcing it under high pressure through a specialized steel die, akin to squeezing toothpaste from a tube. The result is an aluminum extrusion or profile, maintaining the die’s specific shape and offering limitless design possibilities.

Fabrication

After extrusion, aluminum profiles can undergo fabrication to assume different shapes and incorporate various features, such as holes for screws.

Joining

Various techniques, including fusion welding, friction stir welding, bonding, and taping, are employed to join aluminum. Features facilitating easy joining are often integrated into the extrusion design.

Machining

Common shaping methods for aluminum include milling, drilling, cutting, punching, and bending. The low energy input during machining contributes to a more sustainable final product.

Remelting

Aluminum is 100% recyclable without losing its original properties. Using recycled aluminum consumes only 5% of the energy needed for primary aluminum production. Alumat aims to promote a circular economy through remelt facilities, sorting, and recycling used and scrap aluminum for repeated use.

These terms collectively outline the diverse processes and characteristics associated with aluminum, highlighting its versatility, durability, and sustainability.