MUMBAI, India, July 25 -- Intellectual Property India has published a patent application (202431003516 A) filed by Thyssenkrupp Electrical Steel Gmbh, Gelsenkirchen, Germany, on Jan. 18, 2024, for 'grain-oriented electrical steel sheet and method for its production.'
Inventor(s) include Ludger Lahn; and Paul Betken.
The application for the patent was published on July 25, under issue no. 30/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a Grain-oriented electrical steel sheet, wherein the steel bulk of the grain-oriented electrical steel comprises, in wt.%: Si: 2.0 to 4.0, Mn: 0.01 to 0.5, C: up to 0.005, Alsl: up to 0.0030, N: up to 0.005; wherein the sum of C and N is max. 0.0065 %; at least one element selected from the group consisting of V, Nb, Ti, Mo with the following contents, in wt.%, V: 0.0005 to 0.0060, Nb: 0.0005 to 0.0060, Ti: 0.0005 to 0.0030, Mo: 0.0005 to 0.040; wherein in case the content of Mo is 0.010 wt.%, the sum of the contents of V, Nb, Ti and Mo is = 0.040 wt.% and Cu is present in an amount of 0.02 to 0.6 wt.% and wherein in case the content of Mo is = 0.010 % the sum of the contents of V, Nb, Ti and Mo is =0.030 wt.% and Cu is optionally present in an amount of 0.002 to 0.6 wt.%, optionally S in an amount of max. 0.002 wt.%; optionally one or more elements selected from the group consisting of Se, Sn, Sb, Bi, Ni, Co, Mg, wherein the individual content of each of these elements is 0.002 to 0.2 wt.%, optionally Cr in an amount of 0.002 to 0.60 wt.%, optionally one or more elements selected from the group consisting of As, B, P, Te, wherein the individual content of each of these elements is 0.0003 to 0.1 wt.%, the remainder of the composition being Fe and unavoidable impurities, and to a method for the production thereof."
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