EP 3960881 A1 20220302 - AUSTENITIC STAINLESS STEEL
Title (en)
AUSTENITIC STAINLESS STEEL
Title (de)
AUSTENITISCHER EDELSTAHL
Title (fr)
ACIER INOXYDABLE AUSTÉNITIQUE
Publication
Application
Priority
EP 20193794 A 20200901
Abstract (en)
Austenitic stainless steel utilizing the TRIP effect with a balanced pitting resistance equivalent for high corrosion resistance. The austenitic stainless steel contains 0-0.04 weight % C, 0.2-0.8 weight % Si, 0-2.0 weight % Mn, 16.0-19.0 weight % Cr, 4.0-6.5 weight % Ni, 1.0-4.0 weight % Mo, 0-4.0 weight % W, 0-2.0 weight % Cu, 0.20-0.30 weight % N, the rest being iron and inevitable impurities occurring in stainless steels, the proportion of the ferrite phase in the microstructure is 0-10.0 volume %, the rest being austenite, when quenched and heat treated at the temperature range of 900 - 1200 °C, preferably 950 - 1150 °C.
IPC 8 full level
C21D 6/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/44 (2006.01); C21D 9/46 (2006.01); C22C 38/42 (2006.01); C22C 38/46 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 6/004 (2013.01 - EP KR); C21D 8/005 (2013.01 - US); C21D 9/46 (2013.01 - KR); C22C 38/001 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP); C22C 38/42 (2013.01 - KR US); C22C 38/44 (2013.01 - EP KR US); C22C 38/58 (2013.01 - KR US); C21D 9/46 (2013.01 - EP); C21D 2211/001 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - US); C22C 38/42 (2013.01 - EP); C22C 38/58 (2013.01 - EP)
Citation (applicant)
- WO 2015114222 A1 20150806 - OUTOKUMPU OY [FI]
- WO 2011135170 A1 20111103 - OUTOKUMPU OY [FI], et al
- WO 2013034804 A1 20130314 - OUTOKUMPU OY [FI], et al
- JP 2014001422 A 20140109 - NIPPON STEEL & SUMITOMO METAL CORP
- G. MERIC DE BELLEFONJ. C. VAN DUYSENK. SRIDHARAN: "Composition-dependence of stacking fault energy in austenitic stainless steels through linear regression with random intercepts", J. NUCL. MATER., vol. 492
Citation (search report)
- [XA] EP 2832886 A1 20150204 - NIPPON STEEL & SUMIKIN SST [JP]
- [XA] US 4960470 A 19901002 - HONKURA YOSHINOBU [JP], et al
- [XDA] JP 2014001422 A 20140109 - NIPPON STEEL & SUMITOMO METAL CORP
- [A] EP 3158101 A1 20170426 - OUTOKUMPU OY [FI]
- [A] JP H08104921 A 19960423 - NIPPON STEEL CORP
- [A] EP 0659896 A1 19950628 - SHINKO WIRE CO LTD [JP]
- [A] WO 2015063374 A1 20150507 - OUTOKUMPU OY [FI]
- [A] WO 2015087376 A1 20150618 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3960881 A1 20220302; BR 112023003604 A2 20230509; CN 115997042 A 20230421; JP 2023540461 A 20230925; KR 20230060512 A 20230504; MX 2023002487 A 20230308; TW 202214879 A 20220416; US 2023357909 A1 20231109; WO 2022049051 A1 20220310
DOCDB simple family (application)
EP 20193794 A 20200901; BR 112023003604 A 20210831; CN 202180053606 A 20210831; EP 2021073959 W 20210831; JP 2023512449 A 20210831; KR 20237010596 A 20210831; MX 2023002487 A 20210831; TW 110132317 A 20210831; US 202118042891 A 20210831