EP 2591134 B1 20150121 - AUSTENITIC-FERRITIC STAINLESS STEEL WITH IMPROVED MACHINABILITY
Title (en)
AUSTENITIC-FERRITIC STAINLESS STEEL WITH IMPROVED MACHINABILITY
Title (de)
AUSTENITISCH-FERRITISCHER EDEHLSTAHL MIT VERBESSERTER VERARBEITBARKEIT
Title (fr)
ACIER INOXYDABLE AUSTÉNO-FERRITIQUE À USINABILITÉ AMÉLIORÉE
Publication
Application
Priority
- FR 2010000498 W 20100707
- FR 2011000394 W 20110705
Abstract (en)
[origin: WO2012004464A1] The invention relates to an austenitic-ferritic stainless composition, wherein the composition includes, by weight percent: 0.01% = C < 0.10% 20.0% = Cr < 24.0% 1.0% =.Ni = 3.0% 0.12% = N = 0.20% 0.5% < Mn = 4.0% 1.6% < Cu = 3.0% 0.05% = Mo = 1.0% W < 0.15% 0.05% = Mo +W/2 < 1.0% 0.2% = Si = 1.5% Al = 0.05% V = 0.5% Nb < 0.5 % Ti = 0.5% B = 0.003% Co = 0.5% REM = 0.1% Ca < 0.03 % Mg < 0.1 % Se = 0.005% O = 0.01% S = 0.030% P = 0.040%, the remainder being iron and impurities resulting from production, and the microstructure consisting of austenite and 35 to 65 vol % of ferrite, wherein the composition further satisfies the following relations: 40 < IF = 65, where IF = 10%Cr + 5.1%Mo + 1.4%Mn + 24.3%Si + 35%Nb + 71.5%Ti - 595.4%C - 245. 1%N - 9.3%Ni - 3.3%Cu - 99.8 and IRCGCU > 32.0, where IRCGCU = %Cr+ 3.3%MO + 2%Cu +16%N + 2.6%Ni - 0.7%Mn, and 0 = IU < 6.0, where IU = 3%Ni + %Cu + %Mn -100%C -25%N - 2(%Cr + %Si) -6%Mo +45. The invention also relates to a method for manufacturing sheets, strips, coils, bars, wires, profile sections, forged parts, and molded parts made of said steel.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/02 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/58 (2006.01)
CPC (source: CN EP KR US)
B21B 1/00 (2013.01 - US); B21B 3/02 (2013.01 - US); B21C 1/003 (2013.01 - US); B21J 1/02 (2013.01 - US); B22D 11/002 (2013.01 - EP US); C21D 1/60 (2013.01 - EP US); C21D 1/613 (2013.01 - EP US); C21D 6/004 (2013.01 - CN EP US); C21D 8/0226 (2013.01 - CN EP US); C21D 8/0263 (2013.01 - EP US); C21D 8/065 (2013.01 - EP KR US); C21D 9/46 (2013.01 - EP US); C21D 9/525 (2013.01 - EP US); C22C 38/001 (2013.01 - CN EP KR US); C22C 38/002 (2013.01 - CN EP KR US); C22C 38/005 (2013.01 - CN EP KR US); C22C 38/02 (2013.01 - CN EP US); C22C 38/04 (2013.01 - CN EP US); C22C 38/06 (2013.01 - CN EP US); C22C 38/42 (2013.01 - CN EP KR US); C22C 38/44 (2013.01 - CN EP KR US); C22C 38/46 (2013.01 - CN EP KR US); C22C 38/48 (2013.01 - CN EP KR US); C22C 38/50 (2013.01 - CN EP KR US); C22C 38/52 (2013.01 - CN EP US); C22C 38/54 (2013.01 - EP US); C22C 38/58 (2013.01 - CN EP KR US); C22C 38/60 (2013.01 - EP KR US); C21D 2211/001 (2013.01 - CN EP US); C21D 2211/005 (2013.01 - CN EP US)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2012004464 A1 20120112; AU 2011275610 A1 20130124; AU 2011275610 B2 20140605; BR 112013000264 A2 20160524; BR 112013000264 B1 20180424; CA 2804320 A1 20120112; CA 2804320 C 20150428; CN 103069031 A 20130424; CN 106119737 A 20161116; DK 2591134 T3 20150420; EP 2591134 A1 20130515; EP 2591134 B1 20150121; ES 2534930 T3 20150430; JP 2013535567 A 20130912; JP 5972870 B2 20160817; KR 20130034044 A 20130404; SI 2591134 T1 20150529; US 2013174948 A1 20130711; US 2017121789 A1 20170504; US 9587286 B2 20170307; US 9797025 B2 20171024; WO 2012004473 A1 20120112
DOCDB simple family (application)
FR 2010000498 W 20100707; AU 2011275610 A 20110705; BR 112013000264 A 20110705; CA 2804320 A 20110705; CN 201180033787 A 20110705; CN 201610471326 A 20110705; DK 11751621 T 20110705; EP 11751621 A 20110705; ES 11751621 T 20110705; FR 2011000394 W 20110705; JP 2013517431 A 20110705; KR 20137003293 A 20110705; SI 201130461 T 20110705; US 201113808284 A 20110705; US 201715409348 A 20170118