EP 2235228 A4 20111221 - AUSTENITIC STAINLESS STEEL FOR HIGH VACUUM AND HIGH PURITY GAS TUBE APPLICATION
Title (en)
AUSTENITIC STAINLESS STEEL FOR HIGH VACUUM AND HIGH PURITY GAS TUBE APPLICATION
Title (de)
AUSTENITISCHER NICHTROSTENDER STAHL FÜR DIE HOCHVAKUUM- UND REINGASROHRANWENDUNG
Title (fr)
ACIER INOXYDABLE AUSTÉNITIQUE POUR APPLICATIONS SOUS VIDE POUSSÉ ET EN TUBES À GAZ DE HAUTE PURETÉ
Publication
Application
Priority
- KR 2008007474 W 20081217
- KR 20070133576 A 20071218
Abstract (en)
[origin: WO2009078663A1] The object of the present invention is to provide stainless steel for high vacuum and high purity gas tube applications not having intrusion of impure particles into a processing gas and being cost-efficient. In order to accomplish the object, the present invention provides an austenitic stainless steel for a high vacuum and high purity gas tube application, the stainless steel including, in percent by weight, 0.1% or less of C, 1% or less of Si, 0.5 to 2% of Mn, 0.05% or less of P, 0.01% or less of S, 15 to 30% of Cr, 7 to 20% of Ni, 4% or less of Mo, 3% or less of Cu, 0.05% or less of N, 0.01% or less of B, 0.01% or less of O, a remaining part of Fe, and unavoidable impurities, wherein Ti content is limited to 0.005% or less, Al content is limited to 0.005 to 0.05%, and Ca content is limited to 0.0005 to 0.003%.
IPC 8 full level
C22C 38/40 (2006.01)
CPC (source: EP KR US)
C22C 38/002 (2013.01 - KR); C22C 38/02 (2013.01 - KR); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - KR); C22C 38/34 (2013.01 - KR); C22C 38/40 (2013.01 - EP US); C22C 38/42 (2013.01 - KR); C22C 38/44 (2013.01 - KR); C22C 38/50 (2013.01 - KR); C22C 38/54 (2013.01 - KR); C22C 38/58 (2013.01 - KR)
Citation (search report)
- [X] US 2003127162 A1 20030710 - KIDANI SHIGERU [JP], et al
- [X] JP H08109447 A 19960430 - NIKKO KINZOKU KK
- [X] WO 9506142 A1 19950302 - PO HANG IRON & STEEL [KR], et al
- [X] US 5651937 A 19970729 - DESCAVES FREDERIC [FR]
- [X] US 6123784 A 20000926 - HAVETTE ETIENNE [FR]
- See references of WO 2009078663A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009078663 A1 20090625; CN 101903552 A 20101201; EP 2235228 A1 20101006; EP 2235228 A4 20111221; JP 2011515571 A 20110519; KR 20090066000 A 20090623; US 2011020165 A1 20110127
DOCDB simple family (application)
KR 2008007474 W 20081217; CN 200880121583 A 20081217; EP 08861296 A 20081217; JP 2010537873 A 20081217; KR 20070133576 A 20071218; US 80899408 A 20081217