(19)
(11) EP 2 857 126 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.08.2015 Bulletin 2015/32

(43) Date of publication A2:
08.04.2015 Bulletin 2015/15

(21) Application number: 14187555.9

(22) Date of filing: 02.10.2014
(51) International Patent Classification (IPC): 
B22F 3/15(2006.01)
C22C 38/18(2006.01)
 C22C 33/02(2006.01)
C22C 38/40(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 02.10.2013 SE 1351164

(71) Applicant: Uddeholms AB
683 85 Hagfors (SE)

(72) Inventors:
  • Ejnermark, Sebastian
    652 19 Karlstad (SE)
  • Hillskog, Thomas
    655 93 Karlstad (SE)
  • Ekman, Lars
    683 62 Ekshärad (SE)
  • Robertsson, Rikard
    683 34 Hagfors (SE)
  • Bergqvist, Victoria
    683 61 Ekshärad (SE)
  • Karlsson, Jenny
    683 30 Hagfors (SE)
  • Damm, Petter
    652 29 Karlstad (SE)
  • Mossfeldt, Ulrika
    683 34 Hagfors (SE)
  • Edvinsson, Roland
    652 20 Karlstad (SE)
  • Engström Svensson, Annika
    682 91 Filipstad (SE)
  • Högman, Berne
    683 60 Ekshärad (SE)

(74) Representative: Johansson, Lars E. 
Hynell Patenttjänst AB P.O. Box 138
683 23 Hagfors
683 23 Hagfors (SE)

   


(54) Corrosion and wear resistant cold work tool steel


(57) The invention relates to a corrosion and wear resistance cold work tool steel. The steel comprises the following main components (in wt. %):
C
0.3 - 0.8
N
1.0-2.2
(C+N)
1.3 - 2.2
C/N
0.17 - 0.50
Si
≤ 1.0
Mn
0.2 - 2.0
Cr
13-30
Mo
0.5 - 3.0
V
2.0 - 5.0

balance optional elements, iron and impurities.





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