The structure of clear chill cast iron rolls is made up of a non-continuous network of carbides in a pearlitic or bainitic/mertensitic matrix. Thanks to their high carbide ratio these rolls have an excellent wear resistance, whereas their resistance to thermal fatigue is reduced by the absence of free graphite. Rolls may be supplied as monobloc or as compund. For high hardness the use of compound rolls which can guarantee optimal properties in the working layer and in the core is raccomended.