High-strength alloy cast steel roll 65I is a type of roll used in rough rolling applications. Rough rolling is the initial stage of the rolling process where the steel is reduced in cross-sectional area.  Alloy cast steel rollers are tercih [preferred] for rough rolling because they are very hard and resist wear. The hardness of a 65I roll is HSD 35-45, which is high on the Rockwell C scale of hardness. these rolls are very hard and resist wear, which is important in rough rolling where the steel is being significantly deformed. This can help to reduce roll wear and replacement costs. can withstand the high temperatures that are generated during rough rolling. These rolls maintain their shape well during rolling, which helps to produce high-quality steel products.