Aluminum Alloy Guide

Understanding Alloys

Alloy Selection Is Critical to Performance

Choosing the right aluminum alloy is one of the most important decisions in the extrusion process. Each alloy series offers a unique combination of strength, formability, corrosion resistance, and surface finish characteristics that directly impact the performance, longevity, and cost-effectiveness of your finished product.

Aluminum alloys are classified by a four-digit numbering system established by the Aluminum Association. The first digit indicates the primary alloying element, which determines the series and its fundamental properties. Within each series, specific alloys are further refined with precise compositions to meet targeted performance requirements.

At Yogi Extrusions, our metallurgists work with you to identify the optimal alloy and temper combination for your application, balancing mechanical properties, extrudability, finish quality, and budget considerations.

The Extrusion Workhorse

6000 Series: The Most Versatile Extrusion Alloys

The 6000 series alloys are by far the most widely used for aluminum extrusion. Alloyed with magnesium and silicon, they offer an exceptional balance of strength, corrosion resistance, surface finish quality, and extrudability. These alloys are heat-treatable, meaning their mechanical properties can be enhanced through aging processes (tempers).

6063-T5

Known as the "architectural alloy," 6063-T5 delivers an excellent surface finish and good formability with moderate strength. It is the go-to choice for window frames, curtain walls, decorative trim, and any application where aesthetics are paramount.

6063-T6

The same alloy composition as 6063-T5 but processed to a higher temper, providing increased strength suitable for structural architectural applications where both appearance and load-bearing capability are required.

6061-T6

A higher-strength alloy with good machinability, widely used in industrial, automotive, and structural components. 6061-T6 offers a strong balance of mechanical performance and versatility, making it ideal for applications requiring greater structural integrity.

6005A-T6

Delivers good strength with excellent extrudability. This alloy is particularly popular for transport applications, solar mounting systems, and structural frames where complex cross-sections need to be extruded reliably and efficiently.

6082-T6

The highest strength alloy in the 6000 series, 6082-T6 is increasingly used for structural and automotive applications where maximum load-bearing capacity is required without stepping up to the more expensive 7000 series.