____ , ______ are added to pig iron to convert it into steel Share with your friends Share 0 Umake Zaman Thoker answered this charcoal, limestone and air,amount of carbon is added, the crystalline structure of the metal changes and steel is produced. 0 View Full Answer Akshatsingh answered this 1 tonne of lime stone and 8 tonnes of coal are added to 4 tonnes of iron to produce 1 tonne of steel. 1
