EP 2245203 B1 20181031 - AUSTENITIC STAINLESS STEEL SHEET AND METHOD FOR OBTAINING THIS SHEET
Title (en)
AUSTENITIC STAINLESS STEEL SHEET AND METHOD FOR OBTAINING THIS SHEET
Title (de)
ROSTFREIES AUSTENITISCHES STAHLBLECH UND HERSTELLUNGSVERFAHREN EINES SOLCHEN BLECHS
Title (fr)
TÔLE EN ACIER INOXYDABLE AUSTENITIQUE ET PROCEDE D'OBTENTION DE CETTE TÔLE
Publication
Application
Priority
- FR 2008001687 W 20081203
- EP 07291575 A 20071220
- EP 08872296 A 20081203
Abstract (en)
[origin: EP2072631A1] Stainless steel sheet comprises: carbon (0.05-0.3 wt.%); silicon (0.3-1 wt.%); manganese (0.5-3 wt.%); nickel (4-10 wt.%); chromium (15-20 wt.%); nitrogen (less than 0.2 wt.%); phosphorus (0.05 wt.%); sulfur (0.015 wt.%); optionally vanadium (0.1-0.5 wt.%); optionally molybdenum (3 wt.%); optionally copper (0.5 wt.%); and the rest of the composition consisting of iron and inevitable impurities resulting from processing, where a microstructure of the steel is mainly austenitic steel, and average size of austenite grains is less than 2 mm. Independent claims are included for: (1) a process for preparing the stainless steel sheet, comprising supplying steel composition, casting the steel in the form of slab, hot rolling the slab to obtain a hot-rolled sheet, annealing the hot rolled sheet at a temperature of greater than 1000[deg] C, pickling the hot-rolled sheet, cold rolling the hot-rolled sheet at a reduction rate of greater than 40%, and carrying out a heat treatment on the cold rolled sheet; (2) an installation for a recrystallization annealing of austenitic stainless steel sheet, comprising a rapid heating device for heating the sheet during the heating phase by electromagnetic induction; and (3) a stainless steel mechanical component obtained from the sheet.
IPC 8 full level
C21D 8/04 (2006.01); C21D 9/48 (2006.01); C22C 38/40 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01)
CPC (source: EP)
C21D 8/04 (2013.01); C21D 9/48 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/24 (2013.01); C22C 38/40 (2013.01); C22C 38/58 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2072631 A1 20090624; DK 2245203 T3 20190218; EP 2245203 A1 20101103; EP 2245203 B1 20181031; ES 2708578 T3 20190410; HU E042000 T2 20190628; PL 2245203 T3 20190628; PT 2245203 T 20190206; SI 2245203 T1 20190430; TR 201900950 T4 20190221; WO 2009101285 A1 20090820
DOCDB simple family (application)
EP 07291575 A 20071220; DK 08872296 T 20081203; EP 08872296 A 20081203; ES 08872296 T 20081203; FR 2008001687 W 20081203; HU E08872296 A 20081203; PL 08872296 T 20081203; PT 08872296 T 20081203; SI 200832034 T 20081203; TR 201900950 T 20081203