EP 0566814 B1 19970903 - Superduplex stainless steel having high corrosion resistance and high yield strength in the solution annealed condition
Title (en)
Superduplex stainless steel having high corrosion resistance and high yield strength in the solution annealed condition
Title (de)
Rostfreies Superduplexstahl mit hohe Korrosionsbeständigkeit und hoher Dehngrenze in lösungsgeglühten Zustand
Title (fr)
Acier inoxydable superduplex présentant une haute résistance à la corrosion et une limite élastique élevée à l'état recuit de mise en solution
Publication
Application
Priority
IT RM920309 A 19920424
Abstract (en)
[origin: EP0566814A1] The steel, object of our invention is highly resistant to stress corrosion in acid and alkaline environment, and has furthermore high pitting and crevice corrosion resistance. This steel has a very high yield strength, even in the solution annealed condition. The steel consists of: (in weight percent> C 0.025 max Mn 0.80 max Si 0.80 max Cr 24 - 26 Ni 6.5 - 8.0 Mo 3.0 - 4.0 Cu 1.2 - 2.0 W 0.8 - 1.2 N 0.23 - 0.33 S 0.002 max P 0.025 max Fe balance with the proviso: Pitting Index = Cr + 3.3 Mo + 16N > 42
IPC 1-7
IPC 8 full level
C22C 38/42 (2006.01); C22C 38/44 (2006.01)
CPC (source: EP)
C22C 38/42 (2013.01); C22C 38/44 (2013.01)
Designated contracting state (EPC)
AT BE DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0566814 A1 19931027; EP 0566814 B1 19970903; AT E157710 T1 19970915; DE 69222027 D1 19971009; IT 1257695 B 19960201; IT RM920309 A0 19920424; IT RM920309 A1 19931024
DOCDB simple family (application)
EP 92830586 A 19921026; AT 92830586 T 19921026; DE 69222027 T 19921026; IT RM920309 A 19920424