";s:4:"text";s:1299:" It can also contain a very small amount of Silicon, Sulfur and Phosphorous. Wrought iron is an iron alloy, having not a chemical formula. ).Wrought iron is a soft, ductile, fibrous variety that is produced from a semifused mass of relatively pure iron globules partially surrounded by slag.It usually contains less than 0.1 percent carbon and 1 or 2 percent slag. Carbon content is reduced to about 0.02%. Pig iron contains 6% or more of these impurities but their percentage is reduced to about one per cent in wrought iron. So wrought iron is a purer form of pig iron. 2. 3. Wrought iron, one of the two forms in which iron is obtained by smelting; the other is cast iron (q.v. Wrought iron is an alloy of iron having very low (less than 0.08%) amount of carbon in it. It is used for pipe making due to its superior corrosion and fatigue resistance and better welding and threading qualities. Uses of Wrought Iron: 1. It is used for making bars for stay bolts, engine bolts and rivets etc.