JUNKYARD METAL is a term used to describe metal that has been discarded or salvaged from a junkyard. It is usually made up of a variety of metals, such as iron, steel, aluminum, and copper. SCRAP is a term used to describe the process of collecting and sorting these metals for reuse or recycling. SCRAP metal can be used in a variety of ways, including manufacturing new products, creating art, and even building structures.