Casting is the industrial manufacturing process in which liquid material is purred in to mold for making desired shapes. Through casting process you can develop giant industrial parts, auto component parts, ornaments, aerospace parts with ferrous and non ferrous metal.
Generally there are two types of metal like Ferrous and non ferrous metal are widely used for castings products manufacturing. Ferrous metals contains irons and they are magnetic and gives some resistance to corrosion therefore they are widely used for making big industrial parts. Find here some ferrous metal which are widely used by investment casting foundries in India
Also I would like to solve confusion, generally people thing ferrous casting is one type of process like investment casting, die casting its right but ferrous casting means casting process used ferrous metal for investment castings, steel casting manufacturing.