When it comes to strength, you can’t beat iron and steel. Depending on your application: cookware, construction, or creative metal works, you could have a difficult choice on your hands. Cast iron and cast steel are both poured, in their molten state, into some type of mold to yield certain shapes and sizes. They are both ferrous metals, made mainly of iron atoms, but that’s about where the similarities end. Let’s look at some of the differences.