And Beta needs a steel floor arena to pull that stunt off with magnets.

2,5 Tonnes is way too much. My real robots with axes had between 450kg and 1000kg of force, the best so far Obsidian with 800kg but it is going to 1000kg probably next week. Then its in THz territory, although probably not as effective. But even on 800kg piercing 3mm Ti should be very doable, depending on the axe shape.