EP 3292223 B1 20190417 - METHOD FOR PRODUCING THIN SHEET FROM A STAINLESS AUSTENITIC CRMNNI STEEL
Title (en)
METHOD FOR PRODUCING THIN SHEET FROM A STAINLESS AUSTENITIC CRMNNI STEEL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FEINBLECH AUS EINEM NICHTROSTENDEN, AUSTENITISCHEN CRMNNI-STAHL
Title (fr)
PROCÉDÉ DE PRODUCTION DE TÔLES MINCES EN ACIER CRMNNI INOXYDABLE AUSTÉNITIQUE
Publication
Application
Priority
- DE 102015005742 A 20150505
- EP 2016000742 W 20160504
Abstract (en)
[origin: WO2016177473A1] The invention relates to a method for producing sheets and strips, in particular fine sheet, from stainless austenitic CrMnNi steel having the following composition: Mn: 7.6 to 8.7 wt%; Cr: 16.5 to 16.99 wt%; Ni: 3.8 to 4.3 wt%; Mo: 0.51 to 1.0 wt%; N: 0.18 to 0.45 wt%; C: <0.04 wt%; Si: <0.5 wt%; P:< 0.04 wt%; S: < 0.01 wt%; the rest iron and unavoidable impurities, the method comprising the steps of: melting the steel by a conventional smelting method, casting the steel melt as an extrusion or an ingot, hot rolling the extrusion or the ingot into a slab, further processing of the slab to a preliminary strip and then to a hot strip, scaling and annealing the hot strip, and cold rolling to a cold strip, wherein the steel in the solution-annealed state contains δ-ferrite components < 3 vol% and in the cold-rolled state the steel additionally contains a α'-martensite component of up to 50 vol%.
IPC 8 full level
C21D 6/00 (2006.01); C21D 8/04 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP)
C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 8/0436 (2013.01); C21D 8/0468 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/58 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2016177473 A1 20161110; DE 102015005742 A1 20161110; EP 3292223 A1 20180314; EP 3292223 B1 20190417; ES 2735950 T3 20191220
DOCDB simple family (application)
EP 2016000742 W 20160504; DE 102015005742 A 20150505; EP 16723248 A 20160504; ES 16723248 T 20160504