Patent ID: 8920296

Claim:
A forged roll made from a steel comprising, in % per weight: 0.8 to less than 1% C; 0.2 to 0.5% Mn; 0.2 to 2.0% Si; 7.0 to 13.0% Cr; 0.6 to 1.6% Mo; more than 1.0 to 3.0% V; and Fe and unavoidable impurities; and wherein a microstructure of the roll comprises tempered martensite with a retained austenite rate less than 5% per volume of a working layer of the roll, and an open discontinuous eutectic carbide network comprising a dendritic morphology, wherein the eutectic carbides comprise less than 5% per volume of the working layer of the roll; and wherein the roll exhibits a hardness of between 780 to 840 HV and internal compressive stresses of between −300 to −500 MPa.