	US 12,435,399 B2
	Non-oriented electrical steel sheet and manufacturing method therefor
Se Il Lee, Gyeongsangbuk-do (KR); and Hyunwoo Mun, Gyeongsangbuk-do (KR)
Assigned to POSCO, Pohang-si (KR)
Appl. No. 17/784,444
Filed by POSCO, Pohang-si (KR)
PCT Filed Dec. 17, 2020, PCT No. PCT/KR2020/018616 § 371(c)(1), (2) Date Jun. 10, 2022, PCT Pub. No. WO2021/125862, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10-2019-0170755 (KR), filed on Dec. 19, 2019.
Prior Publication US 2023/0021013 A1, Jan. 19, 2023
Int. Cl. C22C 38/08 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01)

CPC C22C 38/08 (2013.01) [C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 9/46 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/16 (2013.01)]

5 Claims

1. A non-oriented electrical steel sheet, comprising: in wt %, Si: 1.5% or less, C: 0.01% or less (excluding 0%), Mn: 0.03 to 3%, P: 0.005 to 0.2%, S: 0.001 to 0.02%, Al: 0.7% or less (excluding 0%), N: 0.005% or less (excluding 0%), and Cu: 0.02 to 0.06%;

0.0001 to 0.005 wt % of Ca and Mg either alone or in total;

0.02 to 0.059 wt % of Sb and Sn in total; and

a balance of Fe and inevitable impurities,

wherein an average of magnetic flux density B50L in a rolling direction and magnetic flux density B50C in a direction forming a 90 degree angle to the rolling direction is 1.76 T or more, and

wherein a ratio (B50L/B50D) of the magnetic flux density B50L in the rolling direction and the magnetic flux density B50D in the direction forming a 45 degree angle to the rolling direction is 1.07 or less.