Nisshin Steel Co., Ltd.

Tomoharu Shigetomi

Takashi Yamauchi

Hiroshi Morikawa

Ryoji Hirota

Junichi Katsuki

Yukio Katagiri

Masaaki Uranaka

Kentarou Hirata

Shinya Uesugi

Takafumi Kawagoe

A steel sheet hot-dip coated with a Zn&#x2014;Al&#x2014;Mg-based system, wherein the steel sheet material has a predetermined chemical composition; a Ti/C equivalent ratio represented by Formula (1) described in the specification is 0.4 to 1.5; a bainitic ferrite single phase or a phase including a bainitic ferrite phase and a ferrite phase exists as a main phase; the area ratio of a hard second phase and cementite is 3% or less; the ratio of small-angle boundaries with a difference in crystal orientation of 2&#xb0; to 15&#xb0; is 30% to 75%; and Ti-containing carbides having an average particle size of 20 nm or less are dispersed and precipitated and a method of manufacturing thereof.

Steel sheet hot-dip-coated with Zn&#x2014;Al&#x2014;Mg-based system having excellent workability and method for manufacturing same

A stainless steel plate is manufactured by performing temper rolling using a dull roller after the finish cold rolling and bright annealing. The stainless steel plate has an arithmetic mean roughness Ra of 0.2 to 1.2 &#x3bc;m in a direction perpendicular to the rolling direction of the steel plate surface. Furthermore, the stainless steel plate has a transfer ratio of 15 to 70% which is an area ratio of a portion onto which a dull pattern is transferred relative to the steel plate surface. In addition, the micro-pits being formed in the steel plate surface, having a depth of 0.5 &#x3bc;m or more, and having an opening area of 10 &#x3bc;mor more, have an existing density in the steel plate surface of 10.0 or less per 0.01 mm, and an opening area ratio in the steel plate surface of 1.0% or less.

Stainless steel plate

FE-CR soft magnetic material and a method of manufacturing thereof

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Hiroshima, Japan

Tomoharu Shigetomi