EP 4279626 A1 20231122 - 400 MPA-GRADE CORROSION-RESISTANT STEEL BAR AND PRODUCTION METHOD THEREFOR
Title (en)
400 MPA-GRADE CORROSION-RESISTANT STEEL BAR AND PRODUCTION METHOD THEREFOR
Title (de)
400 KORROSIONSBESTÄNDIGER STAB AUS STAHL IN MPA-QUALITÄT UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
BARRE D'ACIER RÉSISTANTE À LA CORROSION DE QUALITÉ 400 MPA ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- CN 202110051522 A 20210115
- CN 2021086677 W 20210412
Abstract (en)
The present invention discloses a 400 MPa corrosion-resistant steel bar and a production method thereof. The steel bar includes the following chemical ingredients: 9.5-10.4% of Cr, 1.0-1.2% of Mo, 0.3-0.6% of Mn, 0.01-1% of Ni, 0.01-0.5% of Cu, at most 0.014% of C, at most 0.004% of N, 0.01-0.05% of Nb, 0.2-0.6% of Si, and the balance of Fe, where Cr+Mo+0.5Mn+0.35Ni+0.25Cu is 11.1-12.2%, and C+N+0.3Si+Mn+1.8Nb is 0.4-0.8%.
IPC 8 full level
C22C 38/44 (2006.01); C21D 8/08 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01)
CPC (source: CN EP KR US)
B21B 1/18 (2013.01 - KR); C21C 7/0006 (2013.01 - US); C21C 7/064 (2013.01 - US); C21D 1/84 (2013.01 - EP US); C21D 6/002 (2013.01 - EP); C21D 6/004 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/005 (2013.01 - KR); C21D 8/065 (2013.01 - EP KR); C21D 8/08 (2013.01 - CN); C21D 8/105 (2013.01 - US); C21D 9/0075 (2013.01 - EP); C21D 9/08 (2013.01 - US); C21D 9/52 (2013.01 - EP); C22C 33/06 (2013.01 - US); C22C 38/001 (2013.01 - KR US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - CN EP); C22C 38/04 (2013.01 - CN EP US); C22C 38/06 (2013.01 - CN EP US); C22C 38/20 (2013.01 - KR); C22C 38/22 (2013.01 - KR); C22C 38/26 (2013.01 - KR); C22C 38/42 (2013.01 - CN EP US); C22C 38/44 (2013.01 - CN EP US); C22C 38/46 (2013.01 - CN EP US); C22C 38/48 (2013.01 - CN EP US); C22C 38/50 (2013.01 - CN EP US); C22C 38/54 (2013.01 - CN EP US); C21D 9/50 (2013.01 - EP); C21D 2211/002 (2013.01 - CN EP KR US); C21D 2211/005 (2013.01 - CN EP KR US)
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4279626 A1 20231122; EP 4279626 A4 20240626; CN 112375995 A 20210219; CN 112375995 B 20210507; CN 113186472 A 20210730; CN 113186472 B 20220722; JP 2024504120 A 20240130; KR 20230118953 A 20230814; US 2024068064 A1 20240229; WO 2022151603 A1 20220721
DOCDB simple family (application)
EP 21918802 A 20210412; CN 2021086677 W 20210412; CN 202110051522 A 20210115; CN 202110394845 A 20210115; JP 2023543025 A 20210412; KR 20237023775 A 20210412; US 202118261657 A 20210412