(19)
(11) EP 1 495 150 A1

(12)

(43) Date of publication:
12.01.2005 Bulletin 2005/02

(21) Application number: 03713027.5

(22) Date of filing: 24.03.2003
(51) International Patent Classification (IPC)7: C22C 38/44
(86) International application number:
PCT/KR2003/000568
(87) International publication number:
WO 2003/080886 (02.10.2003 Gazette 2003/40)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 25.03.2002 KR 2002016214

(71) Applicant: Park, Yong Soo
Seocho-ku,Seoul 137-849 (KR)

(72) Inventors:
  • PARK, Yong-Soo
    Bangbae-DongSeocho-KuSeoul 137-849 (KR)
  • KIM, Soon-Tae
    Mapo-KuSeoul 121-841 (KR)
  • LEE, In-Sung
    Yongdungpo-KuSeoul 150-044 (KR)

(74) Representative: Hoffmann, Jörg Peter, Dr. Ing. 
Müller Hoffmann & PartnerPatentanwälteInnere Wiener Strasse 17
81667 München
81667 München (DE)

   


(54) HIGH-GRADE DUPLEX STAINLESS STEEL WITH MUCH SUPPRESSED FORMATION OF INTERMETALLIC PHASES AND HAVING AN EXCELLENT CORROSION RESISTANCE , EMBRITTLEMENT RESISTANCE, CASTABILITY AND HOT WORKABILITY