Ring gumi modern, paduan wesi, sekadi baja, inox, wesi tuang miwah baja khusus pinaka logam industri umum, mawiana kakuatan ipun miwah biaya sané mudah.
In the modern world, iron alloys, such as steel, inox, cast iron, and special steels are by far the most common industrial metals, because of their high mechanical properties and low cost.