Most common steel will cement copper, you can use railroad iron, rebar for concrete, most steel from a computer case, structural steel used in building (angle iron), the A-frame of your truck or car, basically most any steel with high iron content, although if the steel or iron was covered in rust, oils, grease, a pickling scale. or paint that would be more of a problem than any carbon or other metals in the steel, and the surface would need to be cleaned or removed, stainless steels or metals with high nickel or chromium should, of course, should be avoided for their resistants to acids as well as the toxicity of the solutions...
I do not understand the question of tin and iron.
Tin and iron are two completely different metals easy to identify.
If you are thinking food cans that's another subject, they used to be tin coated steel, nowadays they often have other coatings to protect the food products.