7075 is an aluminum alloy, with zinc as the primary alloying element. It is one of the strongest aluminum alloys comparable to many steels, and has good fatigue strength and average machinability. 7075 was specifically designed for aircraft frames because of its strength somewhat greater than steel while maintaining the light weight of aluminum.
This alloy is 20% stronger than 1100 because manganese has been added and has good strength and is light weight. 3003 aluminum is well-suited to outdoor and harsh environment applications due to its durability and corrosion resistance. It has excellent workability and is used for spinning and stamping applications.
6063 an aluminum alloy, with magnesium and silicon as the alloying elements, is the most common alloy used for aluminum extrusion. Heat treatable and weldable, 6063 allows complex shapes to be formed with very smooth surfaces for a variety of exterior and interior architectural applications.