5052 comes in differing tempers IE h32..but even the hardest of 5052 in still quite gummy to machine.more of a fabricating aluminum...I'd got with the 6061..plus it is stronger too boot.
But note that 6061 also comes in different tempers..O, T4, T6 or T6511...O is gummy too, T4 is not to bad to machine, with T6 or T6511 the best.