In principle, there is no problem, because as long as the coil of the electromagnet can continuously pass through the current, it can generate magnetic force by the magnetic effect of the current, regardless of whether the coil itself is magnetic or not.

However, because of the conductivity of metal, silver >: copper >: aluminum, the use of aluminum will lead to a large loss of electric energy, and aluminum is easy to oxidize, which may also be one of the reasons. The electromagnetic coil is mainly made of copper wire.