Nippon Steel Corporation

Kenzi Koyama

Katsuyoshi Yoshida

Mitsuo Higashi

Mitsuo Yoshida

Jyun-ichi Morita

Zyun-Ichi Morita

A chromium-plated steel strip having an excellent weldability and a satisfactory resistance to corrosion, comprises a steel strip substrate, a base layer consisting of an amorphous metallic material, for example, Ni-P or Ni-B alloy, in an amount of 3 to 500 mg/m.sup.2, an intermediate layer consisting of tin in an amount of 2.8 g/m.sup.2 or less, and a surface layer consisting of metallic chromium and hydrated chromium oxide in an amount of 5 to 150 mg/m.sup.2 and 3 to 30 mg/m.sup.2, respectively.

Chromium-plated steel strip having excellent weldability and resistance

A surface treated steel sheet and strip having a surface layer of M-Si-R in which M is at least one of the group consisting of chromium, phosphorus, silicon, cobalt, manganese, copper, nickel, aluminum and titanium, and R is a group of atoms which has 2 to 10 carbon atoms and contains one or more functional groups selected from the group consisting of vinyl, epoxy, acryl and amino groups.

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Tokai, Japan

Kenzi Koyama