What is steel made of? What are the elements other than iron?
iron (Fe) and carbon (C). Carbon is in small proportion, from 0.1% to 1.7% or so. If you go over 1.7% carbon by weight you get cast iron, which is much less hard than steel.
Steel is iron and carbon.
mainly steel made of Iron and carbon and treated in a proper process to become hard you can add some kind of other elements to get your desired proparty as Chromium,, nickle.. Cupper,, Berelyium,, Vanadium