Explanations:
• The carbon content in pig iron is 3% to 4%. • The carbon content in cast iron is > 2%. • The carbon content in steel is 0.1 to 2.0%. • The carbon content in wrought iron is < 0.1%. • Pig iron is a type of crude iron, which is produced in blast furnance. It is a type of semi-finished metal, usually called as by product generated from process of smelting.