To make a powerful magnet, use a strong magnetic material like neodymium. Shape it into a magnet by applying a magnetic field while it cools down. Finally, the magnet can be magnetized by rubbing it against a magnet or by exposing it to an electrical current.
Weak
The thing in his chest
No.
it depends on what suit he wears
Rare earth magnets are very powerful magnets which have no iron. Cobalt and nickel are also magnetic.
iron tail is great for one it KOs
hulkbuster it beat the hulk
Anzio Iron Works 20mm
The hitties kep a secret of their ability to make iron because they were very skilled fighters and their ability to make iron made them powerful.
Because it was strong, powerful, & man-made.
Saltwater is a very powerful catalyst for the process of rusting.