The iron obtained from a blast furnace is known as pig iron. It is 4 percent carbon and contains minor levels of additional impurities such as Si, P, S, and Mn.
Cast iron is created by using a hot air blast to melt pig iron and coke. It has a lower carbon content (3 percent ). Cast iron, unlike pig iron, is brittle and exceptionally hard.
How is ‘cast iron’ different from ‘pig iron”?
How is ‘cast iron’ different from ‘pig iron”?