Steel A-500/A-513
Cold formed and welded carbon tubing used for general structural purposes.
Aluminum 6063
Generally considered to be an extrusion alloy that is heat treatable for strengthening. Commonly used in the manufacture of furniture, windows, stair rails, and in pipe railing, and architectural extrusions. Machinability is considered to be average for this alloy. The alloy is readily welded by all of the conventional methods and is considered bendable.
Aluminum 6061
Generally considered to be an extrusion alloy that is heat treatable for strengthening with resistance to corrosion. Commonly used for engineering, structural applications, boats, furniture, transportation equipment etc. Machinability is considered to be average for this alloy. The alloy is readily welded by all of the conventional methods, but is not bendable.