Nippon Steel Corporation

Akio Oguri

Shinya Yano

Tomoji Kumano

Shingo Okada

Shota Morimoto

A grain-oriented electrical steel sheet having a metallographic structure after secondary-recrystallized annealing including matrix grains of Goss-oriented secondary recrystallized grains, wherein an existence frequency of Goss-oriented crystal grains having a major diameter of 5 mm or less in the matrix grains is 1.5 grains/cmor more and 8 grains/cmor less, and the magnetic flux density B8 is 1.88 T or more, and wherein deviation angles from a rolling direction of [001] direction of the Goss-oriented crystal grains having the major diameter of 5 mm or less are 7&#x2033; or less and 5&#xb0; or less, in terms of a simple or arithmetic average of &#x3b1; angle and &#x3b2; angle, respectively, wherein the &#x3b1; angle represents an angle formed by a longitudinal direction and a projection of the [001] on a specimen surface, and the &#x3b2; angle represents a tilt of the [001] out of the specimen surface.

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Tokyo, Japan

Akio Oguri