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

DOCDB simple 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