Hitachi Industrial Equipment Systems Co., Ltd.

Nippon Steel & Sumikin Stainless Steel Corporation

Nippon Steel Corporation

Izumi Muto

Hiroshige Inoue

Eiichiro Ishimaru

Kazuyuki Fukui

Masao Hosokawa

Kouji Yamashita

Mitsuaki Kawashima

Shuji Nagasaki

Jun Nakatsuka

Yoshihiro Fujii

Kenji Hirashima

Michio Nakata

Tsuyoshi Nakano

Disclosed is a power distribution transformer having a body of the transformer, the body consisting of a coil and an iron core; a tank containing the body of the transformer and an insulation substance which fills an inner space of the tank; and an upper lid of the tank. The tank and/or the upper lid is made of a ferritic stainless steel.

Power distribution transformer and tank therefor

An ultrathin stainless steel foil of a thickness of 25 &mgr;m or less whose average number of inclusions of a major diameter of 5 &mgr;m or greater per 1 mm,in sections along the rolling direction is 3 or less. The ultrathin stainless steel foil is not readily susceptible to the local tunnel-like corrosions (voids) that have occasionally occurred, during etching, together with cracking in the rolling direction from the edges.

Ultrathin stainless steel foil

Growing community of inventors

Hikari, Japan

Izumi Muto