6061 6063

Mg2Si is the main strengthening phase and is currently the most widely used alloy.

6063 and 6061 are the most commonly used, followed by 6082, 6160, 6125, 6262, 6060, 6005, and 6463. 6063, 6060, and 6463 have relatively low strength in the 6 series. 6262, 6005, 6082, and 6061 are relatively strong in the 6 series. The middle shelf of Tornado 2 is 6061