Patent ID: 11942247
Assignee: CLEVELAND-CLIFFS STEEL PROPERTIES INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 1:
2. A grain oriented electrical steel sheet comprising chromium in a concentration of greater than about 1.2 wt. %, and at least one surface, the grain oriented electrical steel sheet comprising a surface region defined by a depth of less than or equal to 2.5 μm from the at least one surface and a bulk region defined by a depth greater than 2.5 μm from the at least one surface wherein the chromium concentration of said surface region is greater than the chromium concentration in said bulk region, when measured after decarburization annealing, wherein the grain oriented electrical steel sheet has been rapidly heated at a rate in excess of 500° C/second to a temperature of about 700° C., and before high temperature annealing.