Alloy cast steel roll is a cast steel roll whose composition is in the range of eutectoid steel and hypereutectoid steel and whose alloy content is greater than 0.8%. Its carbon content is generally between 0.4% and 1.3%, and it contains some chromium, nickel and molybdenum. , vanadium and other alloying elements, the matrix structure is generally controlled to sorbite and tempered sorbite through the normalizing + tempering heat treatment process. Typical materials are: 60CrMnMo, 65CrNiMo, 70Mn2Mo, 75CrMo, 75CrNiMo, etc. The matrix structure of the alloy cast steel roll is mainly pearlite type, containing a small amount of carbides, and the hardness range is HS 35-50; because the matrix contains a small amount of secondary carbide, the wear resistance of the carbon steel roll is greatly improved. At the same time, the impact toughness of the roll is improved due to the elimination of the massive strip ferrite in the matrix. The performance characteristics of alloy cast steel rolls are high strength, good toughness, good bite, thermal crack resistance and impact resistance. The material of alloy cast steel rolls tends to reduce the carbon content and improve the degree of alloying. Various micro-alloying technologies are used, and at the same time, the metallurgical quality is further improved, so that the alloy cast steel rolls can better meet the needs of different rolling mills.