Aluminium for solsylva build

[bluc]

Hello all Have been trying to source 6061-T6 aluminium in Australia. Have been looking for a couple of weeks with no luck.Does anybody know where I can get this grade or suggest an alternate grade to this? To start with I need the following sizes:
6061-T6 aluminium rectangle bar
1/2 x 5"alum flat 6061-T6,one foot (carrige back)

6061-T6 structual (am std) channel
6" x .437" x 2.157" alum channel 6061-T6
three foot(gantry beam)

6061-T6 aluminium rectangle bar
3/8" x 3" alum flat 6061-T6
three foot


6061-T6 aluminium rectangle bar
3/8" 3" aluminium flat 6061-T6
3 foot
Any info or suggestions appreciated.

[Steelmaster]

I have in the past purchased 6061 from Capral. It wasn't a stocked item, but special order.