I was going to buy some more aluminium for some radials but notice many people selling aluminium tubing for antennas as 6063 T6, I bought EN 6060 Aluminium by mistake I dont know if it makes a lot of difference in the grade of aluminium used for antennas maybe 6063 has better conductivity ?. I think I will get 6063 T6 next time even though I have no idea what the difference would be.