Global Patent Index - EP 1317571 A1

EP 1317571 A1 2003-06-11 - OXIDATION AND CORROSION RESISTANT AUSTENITIC STAINLESS STEEL INCLUDING MOLYBDENUM

Title (en)

OXIDATION AND CORROSION RESISTANT AUSTENITIC STAINLESS STEEL INCLUDING MOLYBDENUM

Title (de)

OXIDATIONS- UND KORROSIONSBESTÄNDIGER, AUSTENITISCHER, MOLYBDÄN ENTHALTENDER STAHL

Title (fr)

ACIER INOXYDABLE AUSTENITIQUE CONTENANT DU MOLYBDENE ET RESISTANT A L'OXYDATION ET A LA CORROSION

Publication

EP 1317571 A1 (EN)

Application

EP 01965992 A

Priority

  • US 0125849 W
  • US 64131700 A

Abstract (en)

[origin: WO0214570A1] An austenitic stainless steel comprising, by weight, 19 to 23 % chromium, 30 to 35 % nickel, 1 to 6 % molybdenum, and less than 0.8 % silicon. The addition of molybdenum t the iron-base alloys of the invention increases their resistance to corrosion at high temperatures. The austenitic stainless steel may consisting essentially of, by weight, 19 to 23 % chromium, 30 to 35 % nickel, 1 to 6 % molybdenum, 0 to 0.1 % carbon, 0 to 1.5 % manganese, 0 to 0.05 % phosphorus, 0 to 0.02 % sulfur, less than 0.8 % silicon, 0.15 to 0.6 % titanium, 0.15 to 0.6 % aluminum, 0 to 0.75 % copper, iron, and incidental impurities. Austenitic stainless steels according to the present invention exhibit enhanced resistance corrosion by salt at a broad temperature range up to at least 1500 DEG C. Thus, the stainless steel of the present invention would find broad application as, for example, automotive components and, more particularly, as automotive exhaust system components and flexible connectors, as well as in other applications in which corrosion resistance is desired.

IPC 1-7 (main, further and additional classification)

C22C 38/44

IPC 8 full level (invention and additional information)

F01N 13/08 (2010.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/44 (2006.01); F01N 13/16 (2010.01)

CPC (invention and additional information)

C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/44 (2013.01)

Citation (search report)

See references of WO 0214570A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0214570 A1 20020221; AU 8653801 A 20020225; BR 0111078 A 20040706; CA 2406341 A1 20020221; CN 1447863 A 20031008; EP 1317571 A1 20030611; JP 2004519555 A 20040702; KR 20030022111 A 20030315; MX PA02010477 A 20030310; NO 20030688 A 20030212; NO 20030688 D0 20030212; PL 365626 A1 20050110; RU 2003104279 A 20041227; ZA 200209033 B 20040223

INPADOC legal status


2004-03-31 [18W] WITHDRAWN

- Effective date: 20040205

2003-06-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030117

2003-06-11 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2003-06-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI