EP 1472383 B1 20070418 - PRECIPITATION HARDENABLE AUSTENITIC STEEL
Title (en)
PRECIPITATION HARDENABLE AUSTENITIC STEEL
Title (de)
AUSSCHEIDUNGSHÄRTBARER AUSTENITISCHER STAHL
Title (fr)
ACIER AUSTENITIQUE DURCISSABLE PAR PRECIPITATION
Publication
Application
Priority
- SE 0202300 W 20021211
- SE 0104192 A 20011211
Abstract (en)
[origin: US2007041863A1] The present invention relates to a stainless steel alloy, more precisely a highstrength stainless, precipitation hardenable, austenitic, stainless alloy, containing a well adjusted amount of aluminium and a high silicon content and which has the following composition (in weight-%): C 0-0.07 Si 0.5-3.0 N 0-0.1 Cr 15.0-20.0 Ni 7.0-12.0 Al 0.25-1.5 Cu 0<Cu<4.0 Mn 0-3.0 Mo 0-2.0 Ti 0-1.0 and the balance Fe together with normally occurring impurities and additives and a product that is reduced by cold working, especially drawing, without intermediate heat treatment, the strength of which increases by final heat treatment at 300° C. to 500° C. by not less than 14%, that shows a M<SUB>d30</SUB>-value of between -55 and -100, a loss of force that is smaller than 3.0% at 1 N during 24 h and which is very suitable for use in spring applications, such as springs of round wire and strip steel and in medical applications, such as surgical and dental instruments.
IPC 8 full level
C21D 9/00 (2006.01); C22C 38/42 (2006.01); C21D 8/02 (2006.01); C21D 9/02 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/34 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 8/0236 (2013.01 - EP US); C21D 9/52 (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 38/34 (2013.01 - EP US); C22C 38/40 (2013.01 - KR); C22C 38/42 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03056053 A1 20030710; WO 03056053 B1 20040408; AT E360104 T1 20070515; AU 2002358375 A1 20030715; AU 2002360028 A1 20030715; BR 0214816 A 20040831; BR 0214816 B1 20110208; DE 60219693 D1 20070531; DE 60219693 T2 20071227; EP 1472383 A2 20041103; EP 1472383 B1 20070418; JP 2005513273 A 20050512; JP 4327601 B2 20090909; KR 100966068 B1 20100628; KR 20040061028 A 20040706; SE 0104192 D0 20011211; SE 0104192 L 20030612; SE 526881 C2 20051115; US 2005126661 A1 20050616; US 2007041863 A1 20070222; WO 03056052 A1 20030710
DOCDB simple family (application)
SE 0202300 W 20021211; AT 02792137 T 20021211; AU 2002358375 A 20021211; AU 2002360028 A 20021211; BR 0214816 A 20021211; DE 60219693 T 20021211; EP 02792137 A 20021211; JP 2003556567 A 20021211; KR 20047008951 A 20021211; SE 0104192 A 20011211; SE 0202299 W 20021211; US 48744206 A 20060717; US 49649105 A 20050201