Nippon Steel & Sumitomo Metal Corporation

Nippon Steel Corporation

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Kenichiroh Matsumura

Takehiro Takahashi

Makoto Nakazawa

Riki Okamoto

Nobuhiro Fujita

Manabu Takahashi

Masaharu Oka

Ikuo Kikuchi

Yoshinobu Matsumura

Masahiro Yui

Ryoh Maruta

Shigeru Usuda

Mitsuhiko Hirano

A galvanized steel sheet according to the present invention includes a steel sheet and a galvanizing layer which is formed on a surface of the steel sheet. The steel sheet includes as a chemical component, by mass %, C: more than 0.100% to 0.500%, Si: 0.0001% to less than 0.20%, Mn: more than 0.20% to 3.00%, Al: 3.0% to 10.0%, N: 0.0030% to 0.0100%, Ti: more than 0.100% to 1.000%, P: 0.00001% to 0.0200%, S: 0.00001% to 0.0100% and a remainder including Fe and impurities. The galvanizing layer includes as a chemical composition, by mass %, Fe: 0.01% to 15% and a remainder including Zn and impurities. The galvanized steel sheet has a specific gravity of 5.5 to less than 7.5.

Galvanized steel sheet and method for producing the same

A Ni-containing-surface-treated steel sheet for a can, which is formed by stamping, includes a steel sheet having a first surface which becomes an outer surface of the can after the stamping; a Ni containing layer arranged on the first surface of the steel sheet; and a Ni&#x2014;W alloy plating layer arranged on the Ni containing layer. The Ni containing layer includes a Fe&#x2014;Ni diffusion alloy layer; a Ni content included in the Ni containing layer is from 5 g/mto 89 g/m; a thickness of the Ni&#x2014;W alloy plating layer is from 0.02 &#x3bc;m to 2 &#x3bc;m; and a W concentration in the Ni&#x2014;W alloy plating layer is from 10% to 65% by mass %.

Ni-containing-surface-treated steel sheet for can and manufacturing method thereof

The present invention provides a galvanized steel sheet including: a steel sheet; and a galvanizing layer provided on a surface of the steel sheet; wherein the galvanizing layer includes an amorphous coating layer having an inorganic oxoacid salt and metallic oxide on a surface layer of the galvanizing layer; the galvanizing layer includes a &#x3b6; phase and a &#x3b4;phase; the galvanizing layer includes, by mass, 8 to 13% of Fe; Zn in the metallic oxide exists up to an outermost surface layer of the amorphous layer; and an X-ray diffraction intensity ratio I, which is obtained by dividing an X-ray diffraction intensity of the &#x3b6; phase at d=0.126, after removing background intensity, by an X-ray diffraction intensity of the &#x3b4;1 phase at d=0.126, after removing background intensity, is 0.06 to 0.35.

Galvanized steel sheet

An automobile fuel container material and container has good workability, corrosion resistance of internal and external surfaces and weldability. Excellent environmental adaptability arises from the material being free from the elution of harmful components such as lead and chromium(VI). The automobile fuel container material includes a steel sheet, 5 to 80 g/mzinc plating as a first layer on at least one side of the surface of the steel sheet, 10 g/mnickel plating as a second layer, and not more than 5 g/mof a post-treatment layer. The post-treatment layer forms by coating partially reduced chromic acid and a reducing organic compound or can be an electrolytic chromate film as a lower layer and a resin as an upper layer.

Automobile fuel container material excellent in environment compatibility and automobile fuel container

Growing community of inventors

Tokyo, Japan

Kenichiroh Matsumura