Indefinite chilled rolls are cast iron based rolls alloyed with nickel, chromium and molybdenum having a matrix of pearlite and carbide with flake graphite. These rolls are used primarily for section rolling.the matrix structure varies from fine pearlite to bainite depending on the alloy content. The desired hardness is obtained by changing the carbide/graphite. The material has very good thermal properties used in finishing stands of rod mill.the rolls are to ensure minimum sacrifice of clear chill while achieving maximum functional depth.