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Non Oriented Electrical Steel Sheet And Method For Manufacturing Same

Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, 1.5-5.0% of Si, 0.1-2.0% of Al, 0.1-2.0% of Mn, 0.001-0.08% of Sn, 0.001-0.08% of Sb, and 0.0002-0.0007% of B, with the remainder comprising Fe and inevitable impurities, wherein, when the content of elements is measured in a surface region, extending 0.3-1 µm from the surface toward the inside of the steel sheet, along the thickness direction of the steel sheet, the weight ratio of the Si content to the Al content at the point where the Al content is greatest is 25 or less, and the difference in the maximum intensity of <111>/ND when the steel sheet before and after stress relief annealing is measured through EBSD is at most 3.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
24 June 2026
Publication Number
27/2026
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application

Applicants

POSCO CO., LTD
6261, Donghaean-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37859

Inventors

1. HONG, Jaewan
6261, Donghaean-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37859
2. CHOI, Yangho
6261, Donghaean-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37859

Specification

Documents

Application Documents

# Name Date
1 202647077862-WIPO_PCT_DOC.pdf 2026-06-24
2 202647077862-TRANSLATION OF PRIORITY DOCUMENTS ETC. [24-06-2026(online)].pdf 2026-06-24
3 202647077862-STATEMENT OF UNDERTAKING (FORM 3) [24-06-2026(online)].pdf 2026-06-24
4 202647077862-PROOF OF RIGHT [24-06-2026(online)].pdf 2026-06-24
5 202647077862-PRIORITY DOCUMENTS [24-06-2026(online)].pdf 2026-06-24
6 202647077862-POWER OF AUTHORITY [24-06-2026(online)].pdf 2026-06-24
7 202647077862-FORM 18 [24-06-2026(online)].pdf 2026-06-24
8 202647077862-FORM 1 [24-06-2026(online)].pdf 2026-06-24
9 202647077862-DRAWINGS [24-06-2026(online)].pdf 2026-06-24
10 202647077862-DECLARATION OF INVENTORSHIP (FORM 5) [24-06-2026(online)].pdf 2026-06-24
11 202647077862-COMPLETE SPECIFICATION [24-06-2026(online)].pdf 2026-06-24
12 202647077862-PATENT_APPLICATION_PUBLICATION.pdf 2026-07-11