Will Titanic erode

Answer 1

Yes, Titanic will continue to erode. The metal plates will buckle, one-by-one. The "rusticles" will multiply and the wreck will fall in on itself. The only thing left to wonder is "how long".

Answer 2

Yes, it is made mostly of iron, and iron corrodes in water. Eventually it will rust away.

Answer 3

In the years to come, the Titanic will completely disintegrate into oblivion.

Answer 4

"Erode" is perhaps not the correct word. The iron of which the ship is made will become more and more brittle, and in time the Titanic wil more or less crumble and fall apart.