High-speed steel contains a lot of Mo, V, Cr and other alloying elements. Tempering martensite dispersed with MC, M2C and M6C high hardness eutectic carbide, which has excellent high-temperature wear resistance and thermal cracking resistance. Main characteristics of HSS rolls are the higher hardness of the shell improving the wear resistance and High temperature resistance property due to the higher presence of Cr/Mo/W/V in the composition.