Sheet iron refers to flat pieces or sheets of iron or steel that are no longer in use and are being recycled or sold as scrap. It is a common term used in the scrap metal industry to describe thin, flat metal pieces that were originally used in various applications such as roofing, siding, or construction.

Sheet iron can come in different grades and thicknesses, ranging from thin sheets to thicker plates. It is often characterized by its flat, smooth surface and can be easily identified by its magnetic properties since iron and steel are ferromagnetic materials.

Scrap metal dealers and recycling facilities typically accept sheet iron along with other types of ferrous metals. The collected sheet iron is then processed and recycled to be used in the production of new steel and iron products, reducing the need for extracting and refining raw materials.