EP 3666918 B1 20220223 - FERRITIC STAINLESS STEEL EXCELLENT IN CORROSION RESISTANCE AND IMPACT RESISTANCE
Title (en)
FERRITIC STAINLESS STEEL EXCELLENT IN CORROSION RESISTANCE AND IMPACT RESISTANCE
Title (de)
FERRITISCHER ROSTFREIER STAHL MIT HERVORRAGENDER KORROSIONSBESTÄNDIGKEIT UND SCHLAGZÄHIGKEIT
Title (fr)
ACIER INOXYDABLE FERRITIQUE PRÉSENTANT UNE EXCELLENTE RÉSISTANCE À LA CORROSION ET AUX CHOCS
Publication
Application
Priority
KR 20180159642 A 20181212
Abstract (en)
[origin: EP3666918A1] Provided is a ferritic stainless steel having improved impact resistance and corrosion resistance at high temperatures by suppressing formation of a sigma phase in the steel. The ferritic stainless steel composition may include an amount of about 0.015% or less (excluding 0%) of carbon (C), an amount of about 0.17% or less (excluding 0%) of silicon (Si), an amount of about 1.35% or less (excluding 0%) of manganese (Mn), an amount of about 17 to 20% of chromium (Cr), an amount of about 0.1 to 0.5% of titanium (Ti), an amount of about 3 to 5% of aluminum (Al), and iron (Fe) constituting the remaining balance of the steel composition. In particular, the steel composition satisfies [Equation 1] below.20Si+Mn/A1<0.7where Si, Mn, and Al denote the content (%) of each component.
IPC 8 full level
C22C 38/06 (2006.01); C22C 38/14 (2006.01); C22C 38/18 (2006.01); C22C 38/28 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01)
CPC (source: CN EP KR US)
C22C 38/00 (2013.01 - EP); C22C 38/001 (2013.01 - KR US); C22C 38/02 (2013.01 - CN KR US); C22C 38/04 (2013.01 - CN KR); C22C 38/06 (2013.01 - CN EP KR US); C22C 38/18 (2013.01 - EP US); C22C 38/22 (2013.01 - US); C22C 38/26 (2013.01 - US); C22C 38/28 (2013.01 - CN EP KR US); C22C 38/38 (2013.01 - US); C21D 2211/005 (2013.01 - EP KR); C22C 38/001 (2013.01 - EP); C22C 38/002 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP)
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 3666918 A1 20200617; EP 3666918 B1 20220223; CN 111304528 A 20200619; CN 111304528 B 20230217; KR 102602916 B1 20231115; KR 20200071980 A 20200622; US 2020190642 A1 20200618
DOCDB simple family (application)
EP 19191488 A 20190813; CN 201910818194 A 20190830; KR 20180159642 A 20181212; US 201916538358 A 20190812