EP 4060058 A4 20240124 - HIGH-STRENGTH FERRITIC STAINLESS STEEL FOR CLAMP, AND MANUFACTURING METHOD THEREFOR
Title (en)
HIGH-STRENGTH FERRITIC STAINLESS STEEL FOR CLAMP, AND MANUFACTURING METHOD THEREFOR
Title (de)
HOCHFESTER FERRITISCHER ROSTFREIER STAHL FÜR KLEMMEN UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
ACIER INOXYDABLE FERRITIQUE À HAUTE RÉSISTANCE POUR COLLIER DE SERRAGE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20190170065 A 20191218
- KR 2020015781 W 20201111
Abstract (en)
[origin: EP4060058A1] Disclosed are high-strength ferritic stainless steel STS430, which has a yield strength of 350 MPa or greater and can be applied to a clamp of a vehicle or a common hose, and a manufacturing method thereof. The high-strength ferritic stainless steel for a clamp, according to one embodiment of the present invention, comprises, by weight, 0.04-0.1% of C, 0.2-0.6% of Si, 0.01-1.5% of Mn, 14.0-18.0% of Cr, 0.005-0.2% of Al, 0.005-0.2% of V, 0.02-0.1% of N, and the remainder as Fe and inevitable impurities, satisfies Expressions (1) and (2), and has at least 2.5×10<sup>6</sup> precipitates having a mean diameter of 0.5 µm or less per mm<sup>2</sup>. (1) 0.35% ≤ Si+Al+V ≤ 0.6% (2) 0.09% ≤ C+N ≤ 0.12%
IPC 8 full level
C22C 38/24 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/46 (2006.01)
CPC (source: EP KR US)
B21B 1/24 (2013.01 - KR US); B21B 3/00 (2013.01 - KR); C21D 6/002 (2013.01 - EP); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/0205 (2013.01 - EP US); C21D 8/021 (2013.01 - EP); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0236 (2013.01 - EP KR US); C21D 8/0242 (2013.01 - EP); C21D 8/0252 (2013.01 - EP); C21D 8/0263 (2013.01 - EP); C21D 8/0273 (2013.01 - EP); C21D 9/46 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/24 (2013.01 - EP KR US); C22C 38/38 (2013.01 - KR); C22C 38/46 (2013.01 - EP); C21D 2211/004 (2013.01 - EP); C21D 2211/005 (2013.01 - EP KR US)
Citation (search report)
- [XI] US 2017283923 A1 20171005 - TA AYAKO [JP], et al
- [A] JP 2001107149 A 20010417 - KAWASAKI STEEL CO
- [A] JP 2001089814 A 20010403 - KAWASAKI STEEL CO
- [A] US 6458221 B1 20021001 - OTA HIROKI [JP], et al
- [A] US 2002074067 A1 20020620 - OTA HIROKI [JP], et al
- [A] JP 2006299374 A 20061102 - NIPPON STEEL & SUMIKIN SST
- See references of WO 2021125564A1
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)
EP 4060058 A1 20220921; EP 4060058 A4 20240124; CN 114945689 A 20220826; JP 2023507639 A 20230224; JP 7421650 B2 20240124; KR 102272790 B1 20210705; KR 20210078226 A 20210628; US 2023025024 A1 20230126; WO 2021125564 A1 20210624
DOCDB simple family (application)
EP 20902604 A 20201111; CN 202080093046 A 20201111; JP 2022537900 A 20201111; KR 20190170065 A 20191218; KR 2020015781 W 20201111; US 202017786152 A 20201111