公开(公告)号：EP4455342A1

公开(公告)日：2024-10-30

申请号：EP22911834.4

申请日：2022-12-20

申请人： POSCO Co., Ltd

发明人： SONG, DaeHyun ,  LEE, Sangwoo ,  PARK, Junesoo

IPC分类号： C22C38/34 ,  C22C38/20 ,  C22C38/22 ,  C21D8/12 ,  H01F1/147

摘要： The present invention relates to a grain-oriented electrical steel sheet and a manufacturing method therefor. The grain-oriented electrical steel sheet according to one embodiment of the present invention may comprise, in wt%, 2.0 to 6.0 wt% of Si, 0.005 to 0.04 wt% of acid-soluble Al, 0.01 to 0.2 wt% of Mn, at most 0.01 wt% of N, 0.0005 to 0.045 wt% of P, at most 0.010 wt% of S, 0.01 to 0.05 wt% of Sb, at most 0.005 wt% of C, 0.03 to 0.08 wt% of Sn, 0.01 to 0.2 wt% of Cr, 0.031 to 0.25 wt% of Cu, 0.01 to 0.05 wt% of Mo, and the remainder in Fe and other unavoidable impurities, and satisfy Formula 1. "> 0.03 Sn √ Cu + Sb − 0.3 2
(In formula 1, [Sn], [Cu], and [Sb] represent the wt% of Sn, Cu, and Sb, respectively, √ represents a square root, and | | represents an absolute value).