hss rolls

The microstructure consists of tempered bainitic / martensitic matrix with primary and secondary carbides. Primary carbides MC, M7C3, M6C and M2C are originated during the eutectic solidification. Secondary carbides are precipitated during the High Temperature quench and tempering. The rolls are cast with the right structure to undergo the High Temperature quenching to promote the right precipitation of secondary carbides and optimum material properties. Excellent wear resistance and fire crack resistance and very good oxidation behaviour at rolling temperatures under the adequate rolling conditions are the main features of this grade.