
STEEL is an Iron (Fe) Carbon (C) alloy. Apart from C, there are alloying elements and impurity (impure, polluting) elements in different proportions. After the liquid steel is produced, it is shaped as ingot by casting or as billet by continuous casting method.

Ductile cast iron or spheroidal graphite cast iron is a unique type of iron. Before casting, it is subjected to a special treatment (grafting) with magnesium to give it an exceptionally strong structure against impact and to have a long life.

Stainless steel, which contains 10.5% or more chromium and 1.2% or less carbon, thus providing resistance to corrosion, is an iron alloy that forms a self-healing surface layer.

Cast alloy containing iron and carbon and containing carbon lamellar graphite pieces is called Pig iron or Gray Cast Iron. In other words, it is an iron-carbon material in which the free carbon is in the form of sheet (lamellar) graphite.