1. Explain why aluminum alloys containing more than about 15% Mg are not used.
2. Would you expect a 2024-T9 aluminum alloy to be stronger or weaker than a 2024-T6 alloy? Explain.
3. Estimate the tensile strength expected for the following aluminum alloys:
![967_cb9ec513-a0ed-4892-9492-d73422a84bf6.png](https://secure.tutorsglobe.com/CMSImages/967_cb9ec513-a0ed-4892-9492-d73422a84bf6.png)