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EP0435003A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Stainless steel exhibiting excellent anticorrosion property for use in engine exhaust systems

Assignee: Nippon Steel Corp
•
Filing: 1990-11-28
•
Granted: —
•
Expires: 2010-11-28
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Abstract

Abstract A stainless steel exhibiting excellent anticorrosion property for use in engine exhaust systems comprises not more than 0.010% C, not more than 0.2% Si, 0.05 % - 1.5 % Mn, 12 % - 20 % Cr, 0.2 % - 3.0 % Mo, 0.005 % - 0.1 % Aℓ, not more than 0.015 % N, not more than 0.025 % P, not more than 0.010 % S, either or both of 10x(C% + N%) - 0.5% Ti and 5x(C% + N%) Nb, and the balance of Fe and unavoidable impurities. An additional improvement in the anticorrosion property of the stainless steel can be obtained by further adding thereto one or more of 0.1 % - 1.0 % Ni, 0.03 % - 1.0 % Cu, 0.05 % - 0.5 % W, 0.05 % - 0.5 % V and 0.05 % - 1.0 % Zr and/or one or both of 0.001 % - 0.03 % Ca and 0.001 % - 0.03 % Ce.

Inventors

  • 👤 Eiji C/O R & D Laboratories - Ii Sato
  • 👤 Ryo C/O R & D Laboratories - Ii Matsuhashi
  • 👤 Satoshi C/O R & D Laboratories - Ii Ito
  • 👤 Kazuhiro C/O Yawata Works Tano
  • 👤 Kenichi C/O Yawata Works Asakawa

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 22:56
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/22; C22C38/26; C22C38/36

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 135 words
A stainless steel exhibiting excellent anticorrosion property for use in engine exhaust systems comprising, as expressed in wt% not more than 0.010 % C, not more than 0.2 % Si, not less than 0.05 % and not more than 1.5 % Mn, not less than 12 % and not more than 20.0 % Cr, not less than 0.2 % and not more than 3.0 % Mo, not less than 0.005 % and not more than 0.1 % Aℓ, not more than 0.015 % N, not more than 0.025 % P, not more than 0.010 % S, either or both of not less than 10x(C% + N%) and not more than 0.5 % Ti, and not less than 5x(C% + N%) and not more than 0.5 % Nb, and the balance of Fe and unavoidable impurities.
Claim 2
Dependent Claim 84 words
A stainless steel exhibiting excellent anticorrosion property for use in engine exhaust systems according to claim 1, further comprising one or more of not less than 0.1 % and not more than 1.0 % Ni, not less than 0.03 % and not more than 1.0 % Cu, not less than 0.05 % and not more than 0.5 % W, not less than 0.05 % and not more than 0.5 % V, and not less than 0.05 % and not more than 1.0 % Zr.
Claim 3
Dependent Claim 51 words
A stainless steel exhibiting excellent anticorrosion property for use in engine exhaust systems according to claim 1 or claim 2, further comprising one or both of not less than 0.001 % and not more than 0.03 % Ca and not less than 0.001 % and not more than 0.03 % Ce.

References Cited (Backward Citations)

US2745738A Cited
US4078919A Cited
US3997373A Cited
US4059440A Cited
EP0225263A1 Cited

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