Nippon Steel Corporation

Kohhei Kamiya

Mitsuru Yoshida

Nobusato Kojima

Yuuki Kanzawa

A hot-rolled steel sheet according to an aspect of the present invention has a predetermined chemical composition, in which, in a location at a depth of &#xbc; of a sheet thickness from a surface, an area ratio of ferrite is 10% to 55%, a total area ratio of bainite and martensite is 45% to 90%, a total area ratio of the ferrite, the bainite, and the martensite is 90% or more, an average crystal grain size is 12.0 &#x3bc;m or less, in a texture measured in a sheet thickness central portion, a maximum pole density of orientation groups of {100} &#x3c;011&#x3e;, {211} &#x3c;011&#x3e;, {311} &#x3c;011&#x3e;, {110} &#x3c;011&#x3e;, and {332} &#x3c;113&#x3e; is 8.0 or less, a total of pole densities of {211} &#x3c;011&#x3e; and {332} &#x3c;113&#x3e; is 10.0 or less, and a tensile strength is 950 MPa or more.

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Tokyo, Japan

Kohhei Kamiya