2011-T3 aluminum boasts good machinability, especially free-cutting qualities, and good mechanical properties. It also has excellent surface finish capabilities. When machined, chips of the metal break off small and easily, allowing for smooth finishes and tight tolerances. Weldability, strength, and anodizing response are all rated as average at best, and this alloy does not have a high level of corrosion resistance.
2011 is typically used for screw machine parts, small precision gears, and precision machine parts such as clock, camera, and speedometer parts.If the ability to make your parts quickly and easily is the most important, and strength is not the primary desire, 2011-T3 is an excellent option.