Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Shiro Sanagi

Satoshi Nishimura

Hidekuni Murakami

Masayoshi Suehiro

The present invention relates to a steel sheet for Vitreous enameling excellent in enameling properties (bubbling and black spot resistance, enamel adhesiveness and fish scale resistance) and workability, and a method for producing the same, and is characterized in that the steel sheet contains, in mass of, C: 0.010% or less, Mn: 0.03 to 1.3%, Si: 0.03% or less, Al: 0.02% or less, N: 0.0055% or less, P: below 0.035%, and S: over 0.025% to 0.08%; and the density change of the steel sheet from before an annealing to after an annealing at 850&#xb0; C. for 20 hours, in a hydrogen atmosphere is 0.02% or more.

Steel sheet for vitreous enameling and method for producing the same

A vitreous enamel steel sheet produced by a continuous casting, excellent in formability, bubbling and black spot resistance and adhesiveness, which comprises, in terms of mass %, 0.002% or less of C, 0.05 to 0.2% of Mn, 0.01% or less of Si, 0.004% or less of N, 0.015 to 0.05% of 0, less than 0.01% of P, 0.025% or less of S, 0.02 to 0.04% of Cu, 0.03 to 0.05% of Nb, and 0.03 to 0.07% of V, satisfying the inequality: 0.2>Mn (%)&minus;2.0&middot;O (%)&plus;0.8&middot;V (%)&plus;0.5&middot;Nb (%), and the balance consisting of Fe and unavoidable impurities, and a method for producing the same.

Continuous casting steel plate for porcelain enameling excellent in formability resistance to occurrence of bubble or black point, and adhesion with porcelain enamel

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Kitakyushu, Japan

Shiro Sanagi