6061 aluminum–What is the difference between 6061 and 6061-T6 aluminum?

What is the difference between 6061 and 6061-T6 aluminum?

The main difference between 6061 and 6061-T6 aluminum is the temper designation. “6061” refers to the alloy

composition, which is primarily composed of aluminum, magnesium, and silicon. It offers good strength, weldability,

and corrosion resistance. On the other hand, “6061-T6” specifically denotes the temper condition of the aluminum.

The “-T6” temper designation indicates that the aluminum has undergone a solution heat treatment and then

artificially aged. This process enhances the material’s strength and hardness. The “T6” temper is commonly used for

applications requiring high strength and structural integrity, such as aerospace components, marine structures, and

automotive parts.

In summary, while 6061 aluminum refers to the alloy composition, 6061-T6 aluminum indicates the specific temper

condition with improved strength properties. The addition of “-T6” signifies that the aluminum has been heat treated

to achieve the desired mechanical properties.