Global Patent Index - EP 1538230 B1

EP 1538230 B1 2009-02-18 - Cr STEEL FOR STRUCTURAL USE AND METHOD FOR PRODUCING THE SAME

Title (en)

Cr STEEL FOR STRUCTURAL USE AND METHOD FOR PRODUCING THE SAME

Title (de)

Cr-STAHL FüR DIE BAUANWENDUNG UND HERSTELLUNGSVERFAHREN DAFüR

Title (fr)

ACIER A BASE DE CR POUR UNE UTILISATION STRUCTURELLE ET PROCEDE DE PRODUCTION ASSOCIE

Publication

EP 1538230 B1 (EN)

Application

EP 03794112 A

Priority

  • JP 0310908 W
  • JP 2002257229 A

Abstract (en)

[origin: US2005241737A1] To provide structural Cr-containing steel with excellent low-temperature toughness and impact toughness, with low costs as compared with stainless steel, and with sufficient corrosion resistance. Specifically, this is structural Cr-containing steel and a manufacturing method thereof, wherein the Cr-containing steel contains C of 0.002 to 0.02%; N of 0.002 to 0.02%; Si of 0.05 to 1.0%; Mn of 0.05 to 1.0%; P of 0.04% or less; S of 0.02% or less; Al of 0.001 to 0.1%; and Cr of 6.0 to 10.0%, further may contain Cu of 0.1 to 1.0%, further may contain at least one of: Ni of 0.1 to 1.0%; and Mo of 0.1 to 1.0%, and further may contain at least one of: Nb of 0.005 to 0.10%; and V of 0.005 to 0.20%, the balance are formed of Fe and unavoidable impurities, and the Cr-concentration in the surface layer of the steel is equal to or more than the value wherein 1% is subtracted from the Cr-concentration within the steel.

IPC 8 full level (invention and additional information)

C22C 38/00 (2006.01); C22C 38/18 (2006.01); C22C 38/48 (2006.01)

CPC (invention and additional information)

C22C 38/004 (2013.01); C21D 6/002 (2013.01); C21D 8/0278 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/18 (2013.01); C21D 2261/00 (2013.01)

Designated contracting state (EPC)

DE FR

EPO simple patent family

US 2005241737 A1 20051103; CN 1303242 C 20070307; CN 1678766 A 20051005; DE 60326247 D1 20090402; EP 1538230 A1 20050608; EP 1538230 A4 20071114; EP 1538230 B1 20090218; KR 100665128 B1 20070109; KR 20050057106 A 20050616; TW 200404904 A 20040401; TW I306123 B 20090211; WO 2004022808 A1 20040318

INPADOC legal status


2015-08-31 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20140901

2015-07-31 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20150303

2015-05-29 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20150430

2015-05-28 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 60326247

- Effective date: 20150303

2015-03-03 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 60326247

2013-11-29 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20130808

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2013-10-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2010-01-27 [26N] NO OPPOSITION FILED

- Effective date: 20091119

2009-04-02 [REF] CORRESPONDS TO:

- Document: DE 60326247 P 20090402

2009-02-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR

2008-05-21 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20080421

2007-11-14 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20071012

2005-12-21 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR

2005-06-08 [17P] REQUEST FOR EXAMINATION FILED

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