EP 4286542 A1 20231206 - MARTENSITE STAINLESS STEEL MATERIAL
Title (en)
MARTENSITE STAINLESS STEEL MATERIAL
Title (de)
MARTENSITISCHES EDELSTAHLMATERIAL
Title (fr)
MATÉRIAU EN ACIER INOXYDABLE MARTENSITIQUE
Publication
Application
Priority
- JP 2021050578 A 20210324
- JP 2022013603 W 20220323
Abstract (en)
A martensitic stainless steel material that achieves both a high yield strength and excellent SSC resistance is provided. The martensitic stainless steel material according to the present disclosure consists of, in mass%, C: 0.030% or less, Si: 1.00% or less, Mn: 1.00% or less, P: 0.030% or less, S: 0.0050% or less, Cu: 0.01 to 3.50%, Cr: 10.00 to 14.00%, Ni: 4.50 to 7.50%, Mo: 1.00 to 4.00%, Ti: 0.050 to 0.300%, V: 0.01 to 1.00%, Al: 0.001 to 0.100%, Co: 0.010 to 0.500%, Ca: 0.0005 to 0.0050%, Sn: 0.0005 to 0.0500%, N: 0.0010 to 0.0500%, O: 0.050% or less, and the balance: Fe and impurities, and has a yield strength of 758 MPa or more. Within this range, the contents of elements and the yield strength satisfy Formula (1) described in the description.
IPC 8 full level
C21D 8/02 (2006.01); C21D 8/06 (2006.01); C21D 8/10 (2006.01); C21D 9/08 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
C21D 1/25 (2013.01); C21D 6/004 (2013.01); C21D 6/007 (2013.01); C21D 8/0205 (2013.01); C21D 8/0247 (2013.01); C21D 8/065 (2013.01); C21D 8/105 (2013.01); C21D 9/0075 (2013.01); C21D 9/08 (2013.01); C21D 9/46 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); C22C 38/60 (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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4286542 A1 20231206; EP 4286542 A4 20240710; BR 112023014937 A2 20231107; CN 117043378 A 20231110; JP 7151945 B1 20221012; JP WO2022202913 A1 20220929; MX 2023008967 A 20230822; WO 2022202913 A1 20220929
DOCDB simple family (application)
EP 22775695 A 20220323; BR 112023014937 A 20220323; CN 202280023223 A 20220323; JP 2022013603 W 20220323; JP 2022539422 A 20220323; MX 2023008967 A 20220323