12 Nov 2012. Aluminium tube AW 6063. AW 6063 tube is the right choice if you require very complex cross sections and adequate fatigue strength. A side-by-side comparison of any quantitative material properties that 6061 ( AlMg1SiCu) Aluminum and 6063-T5 Aluminum have in common. Aluminum and Aluminum Alloys - Google Books Result. Aluminium AW 6063 T6 angle - Ruukki.