EP 0947591 A1 19991006 - Stainless austenitic steel suitable for the manufacture of wires
Title (en)
Stainless austenitic steel suitable for the manufacture of wires
Title (de)
Rostfreier austenitischer Stahl, geeignet zur Herstellung von Drähten
Title (fr)
Acier inoxydable austénitique pour l'élaboration notamment de fil
Publication
Application
Priority
FR 9803263 A 19980318
Abstract (en)
An austenitic stainless steel contains only vitreous inclusions which are deformable during hot working. The stainless steel has the composition (by wt.) 5 x 10<-3>-200 x 10<-3>% C, 5 x 10<-3>-400 x 10<-3>% N, 0.2-10% Mn, 12-23% Cr, 0.1-17% Ni, 0.1-2% Si, 0-100 x 10<-4>% S, 40 x 10<-4>-120 x 10<-4>% total O, 0-5 x 10<-4>% Al, 0-0.5 x 10<-4>% Mg, 0-5 x 10<-4>% Ca, 0-4 x 10<-4>% Ti, balance Fe and impurities. The steel contains oxide inclusions in the form of a vitreous mixture containing 40-60% SiO2, 5-50% MnO, 1-30% CaO, 0-4% MgO, 5-25% Al2O3, 0-4% Cr2O3 and 0-4% TiO2, the sum of Cr2O3 + TiO2 + MgO being less than 10%.
Abstract (fr)
Acier inoxydable austénitique pour la réalisation de fil pouvant être utilisé dans le domaine du tréfilage en diamètre inférieur à 0,3 mm et dans le domaine de la réalisation de pièces soumises à la fatigue, caractérisé en la composition pondérale suivante : 5.10-3% <= carbone <= 200. 10<-3>%, 5.10-3% <= azote <= 400. 10<-3>%, 0,2% <= manganèse <= 10%, 12% <= chrome <= 23%, 0,1% <= nickel <= 17%, 0,1% <= silicium <= 2%, dans lequel les éléments résiduels sont contrôlés de façon à obtenir des inclusions d'oxydes sous forme de mélange vitreux dont les proportions pondérales sont les suivantes : 40% <= SiO2 <= 60%, 5% <= MnO <= 50%, 1% <= CaO <=30%, 0% <= MgO <= 4%, 5% <= Al2O3 <= 25%, 0% <= Cr2O3 <= 4%, 0% <= TiO2 <= 4%.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/38 (2006.01); C22C 38/40 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C22C 38/02 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C22C 38/40 (2013.01 - KR); C22C 38/58 (2013.01 - EP US); Y10T 428/12431 (2015.01 - EP US)
Citation (search report)
- [A] EP 0738783 A1 19961023 - UGINE SAVOIE SA [FR] & FR 2733252 A1 19961025 - UGINE SAVOIE SA [FR]
- [A] EP 0567365 A1 19931027 - UGINE SAVOIE SA [FR]
- [A] US 5314549 A 19940524 - MISAO HITOSHI [JP], et al
- [A] FR 2456785 A1 19801212 - DAIDO STEEL CO LTD [JP]
- [A] PATENT ABSTRACTS OF JAPAN vol. 96, no. 007 31 July 1996 (1996-07-31)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
US 6123784 A 20000926; AT E258999 T1 20040215; AU 2036799 A 19990930; AU 737767 B2 20010830; BR 9903041 A 20010320; CA 2266597 A1 19990918; CN 1098372 C 20030108; CN 1238392 A 19991215; DE 69914517 D1 20040311; DE 69914517 T2 20041223; EP 0947591 A1 19991006; EP 0947591 B1 20040204; ES 2212483 T3 20040716; FR 2776306 A1 19990924; FR 2776306 B1 20000519; HK 1026923 A1 20001229; ID 23217 A 20000330; JP H11315350 A 19991116; KR 19990077924 A 19991025; TW 476795 B 20020221; ZA 992060 B 19990927
DOCDB simple family (application)
US 27076299 A 19990317; AT 99400602 T 19990312; AU 2036799 A 19990315; BR 9903041 A 19990318; CA 2266597 A 19990315; CN 99105980 A 19990318; DE 69914517 T 19990312; EP 99400602 A 19990312; ES 99400602 T 19990312; FR 9803263 A 19980318; HK 00102134 A 20000406; ID 990231 D 19990317; JP 7368299 A 19990318; KR 19990008796 A 19990316; TW 88103579 A 19990309; ZA 992060 A 19990315