3 ms·

Steel is iron, with a carbon content somewhere in the range of about 0.25% to 2%.

• ashtonkem 6y ago
  No, steel is an alloy of iron, carbon, and other trace elements. Saying that "Steel is iron" is like saying "Bronze is copper".
  • deleted 6y ago
    [deleted]
  • throwanem 6y ago
    It isn't, but that's beside the point, which is that there's little enough difference between iron and steel that the Eiffel and Blackpool towers being made of wrought iron doesn't prevent them demonstrating that large structures engineered in steel are quite possible to maintain given the requisite investment in actually doing the maintenance. (Saying that, for example, 300-series stainless, around 30-40% chromium and nickel, "is iron", could be fairly criticized this way. Mild steel not so much, and that was what I really had in mind with the statement, although I concede I didn't say so.)