Carbon Steel Coil, a type of steel that generally has only a small quantity of elements other than carbon, silicon, manganese, sulfur and phosphorus, so it has no significant alloying element.
Hot-rolled coil is produced from semi-finished products , which are reduced to certain thicknesses by rolling and annealing and wound into a roll. Hot rolled steel is used e.g. for the manufacture of pipes, steel doors and tanks or is further processed into cold-rolled steel.
Cold-rolled sheet in coil form is produced by removing rust from hot-rolled sheet by "pickling" it in a weak acid solution, then washing, brushing, drying, oiling and unrolling the sheet and finally performing cold-rolling by passing the sheet through a reducing mill under pressure and winding it into a roll. Cold rolled steel is a more highly finished product and has a smoother surface, greater dimensional accuracy (thickness, width, length) and greater strength. Much cold-rolled steel is processed in the automotive industry, but some is also used in the manufacture of household goods.
Stainless steels are distinguished from carbon steel by their chromium content and, in certain cases - nickel. Adding chromium to carbon steel makes it more rust and stain-resistant, and when nickel is added to chromium stainless steel it enhances its mechanical properties, for example its density, heat capacity and strength. Stainless steel sheet is used, for example, in the manufacture of machinery, tools and containers.