The tenure of second five year plan was from 1956 to 1961. The main objective of this plan was to adopt such a system that could establish an equitable social system. The development of iron and steel, non-ferrous metals, coal, cement, heavy chemicals and other industries was emphasized. The plan was called economic constitution of India because of the strategy adopted in it. The model of this plan was the four- sector developmental model by Prof. P.C. Mahalanobis.
