Nippon Steel & Sumikin Stainless Steel Corporation

Nippon Steel Stainless Steel Corporation

Norihiro Kanno

Junichi Hamada

Yoshiharu Inoue

Shinichi Teraoka

Masaaki Kobayashi

Ken Kimura

Shigeyuki Gotoh

Yuuji Koyama

Jun Takahashi

Koji Ito

Masatoshi Abe

Akihiko Takahashi

Nobuhiko Hiraide

Atsutaka Hayashi

Shigeo Fukumoto

Shigeru Kaneko

Takeshi Tomura

Koichi Iuchi

This ferritic stainless steel contains, by mass %, C: 0.001% to 0.030%; Si: 0.01% to 1.00%. Mn: 0.01% to 2.00%, P: 0.050% or less, S: 0.0100% or less, Cr: 11.0% to 30.0%, Mo: 0.01% to 3.00%, Ti: 0.001% to 0.050%, Al: 0.001% to 0.030%, Nb: 0.010% to 1.000%, and N: 0.050% or less, with a remainder being Fe and inevitable impurities, wherein an amount of Al, an amount of Ti, and an amount of Si (mass %) satisfy Al/Ti&#x2265;8.4Si-0.78.

Ferrite-based stainless steel with high resistance to corrosiveness caused by exhaust gas and condensation and high brazing properties and method for manufacturing same

This ferritic stainless steel sheet contains, in terms of % by mass, 0.02% or less of C, 0.02% or less of N, 0.10% to 0.60% of Si, 0.10% to 0.80% of Mn, 15.0% to 21.0% of Cr, more than 2.00% to 3.50% or less of Cu, 0.30% to 0.80% of Nb, 1.00% to 2.50% of Mo, and 0.0003% to 0.0030% of B, with a remainder being Fe and unavoidable impurities, wherein a maximum particle size of &#x3b5;-Cu that is present in a structure is 20 nm to 200 nm.

Ferritic stainless steel sheet having excellent heat resistance

Ferritic stainless steel hot rolled sheet and steel strip excellent in toughness and corrosion resistance which have a predetermined chemical composition, have a Charpy impact value at 0&#xb0; C. of 10 J/cmor more, and have a thickness of 5.0 to 9.0 mm.

Hot-rolled ferritic stainless-steel plate, process for producing same, and steel strip

This hot-rolled ferritic stainless steel sheet has a steel composition containing, in terms of % by mass: 0.02% or less of C; 0.02% or less of N; 0.1% to 1.5% of Si; 1.5% or less of Mn; 0.035% or less of P; 0.010% or less of S; 1.5% or less of Ni; 10% to 20% of Cr; 1.0% to 3.0% of Cu; 0.08% to 0.30% of Ti; and 0.3% or less of Al, with the balance being Fe and unavoidable impurities, and the hot-rolled ferritic stainless steel sheet has a Vickers hardness of less than 235 Hv.

Hot rolled ferritic stainless steel sheet, method for producing same, and method for producing ferritic stainless steel sheet

To provide a ferritic stainless steel sheet which has high scale spalling even at a high temperature around 1000&#xb0; C. Provided is a ferritic stainless steel sheet having excellent Mn-containing oxide film-forming ability and scale spalling ability, containing, in terms of mass %: C: 0.001 to 0.020%, N: 0.001 to 0.020%, Si: 0.10 to 0.40%, Mn: 0.20 to 1.00%, Cr: 16.0 to 20.0%, Nb: 0.30 to 0.80%, Mo: 1.80 to 2.40%, W: 0.05 to 1.40%, Cu: 1.00 to 2.50%, and B: 0.0003 to 0.0030%, in which the above-mentioned components are contained satisfying the formula (1) below, and the balance is composed of Fe and inevitable impurities. At least one of N, Al, V, Mg, Sn, Co, Zr, Hf, and Ta may be added in a predetermined content range.3&#x2266;(5&#xd7;Mo)/(3&#xd7;Mn)&#x2266;20&#x2003;&#x2003;(1)

Ferritic stainless steel sheet

Ferritic stainless steel sheet which has a high oxidation resistance and scale spallation resistance even at a high temperature near 1000&#xb0; C., characterized by containing C: 0.020% or less, N: 0.020% or less, Si: over 0.10 to 0.35%, Mn: 0.10 to 0.60%, Cr: 16.5 to 20.0%, Nb: 0.30 to 0.80%, Mo: over 2.50 to 3.50%, and Cu: 1.00 to 2.50%, having an amount of increase of oxidation after a continuous oxidation test in the air at 1000&#xb0; C. for 200 hours of 4.0 mg/cmor less, and having an amount of scale spallation of 1.0 mg/cmor less.

Ferritic stainless steel sheet excellent in oxidation resistance

Ferritic stainless steel sheet for an exhaust part which has little deterioration in strength even if undergoing long term heat history and is low in cost, excellent in heat resistance and workability characterized by containing, characterized by containing, by mass %, C: less than 0.010%, N: 0.020% or less, Si: over 0.1% to 2.0%, Mn: 2.0% or less, Cr: 12.0 to 25.0%, Cu: over 0.9 to 2%, Ti: 0.05 to 0.3%, Nb: 0.001 to 0.1%, Al: 1.0% or less, and B: 0.0003 to 0.003%, having a Cu/(Ti+Nb) of 5 or more, and having a balance of Fe and unavoidable impurities.

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Hikari, Japan

Norihiro Kanno