EP 3074544 A1 20161005 - MARTENSITIC STAINLESS STEEL, PART MADE OF SAID STEEL AND METHOD FOR MANUFACTURING SAME
Title (en)
MARTENSITIC STAINLESS STEEL, PART MADE OF SAID STEEL AND METHOD FOR MANUFACTURING SAME
Title (de)
MARTENSITISCHER ROSTFREIER STAHL, TEIL AUS DIESEM STAHL UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ACIER INOXYDABLE MARTENSITIQUE, PIÈCE RÉALISÉE EN CET ACIER ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- FR 1361598 A 20131125
- EP 2014075534 W 20141125
Abstract (en)
[origin: WO2015075262A1] The invention relates to martensitic stainless steel, characterised by having the following composition: traces ≤ C ≤ 0.030%; traces ≤ Si ≤ 0.25%; traces ≤ Mn ≤ 0.25%; traces ≤ S ≤ 0.020%; traces ≤ P ≤ 0.040%; 8% ≤ Ni ≤ 14%; 8% ≤ Cr ≤ 14%; 1.5% ≤ Mo + W/2 ≤ 3.0%; 1.0% ≤ Al ≤ 2.0%; 0.5% ≤ Ti ≤ 2.0%; 2% ≤ Co ≤ 9%; traces ≤ N ≤ 0.030%; traces ≤ O ≤ 0.020%; the balance being iron and production impurities; and in that the martensitic transformation starting temperature Ms, calculated by the formula (1) Ms (°C) = 1302 - 28Si - 50Mn - 63Ni - 42Cr - 30Mo + 20AI - 12Co - 25Cu + 10[Ti - 4(C+N)], in which the contents of the various elements are expressed in weight percentages, is no lower than 50 °C, preferably no lower than 75 °C. The invention also relates to a part made of said steel and to the method for manufacturing same.
IPC 8 full level
C21D 6/00 (2006.01); B22F 1/00 (2022.01); C21D 1/25 (2006.01); C21D 6/02 (2006.01); C21D 6/04 (2006.01); C21D 9/32 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/18 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01)
CPC (source: EP US)
B22D 7/00 (2013.01 - EP US); B22F 1/00 (2013.01 - EP US); B22F 3/10 (2013.01 - US); B22F 3/24 (2013.01 - US); C21D 1/18 (2013.01 - EP US); C21D 1/25 (2013.01 - EP US); C21D 6/004 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/007 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 6/02 (2013.01 - EP US); C21D 6/04 (2013.01 - EP US); C21D 8/005 (2013.01 - EP US); C21D 9/0068 (2013.01 - EP US); C21D 9/32 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (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 38/18 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/50 (2013.01 - EP US); C22C 38/52 (2013.01 - EP US); B22F 2003/248 (2013.01 - US); B22F 2301/35 (2013.01 - US); B22F 2998/10 (2013.01 - US); C21D 2211/005 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Citation (search report)
See references of WO 2015075262A1
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 2015075262 A1 20150528; CA 2930140 A1 20150528; CA 2930140 C 20220419; CN 105765087 A 20160713; CN 105765087 B 20180601; DK 3074544 T3 20200120; EP 3074544 A1 20161005; EP 3074544 B1 20191030; EP 3074544 B8 20200311; ES 2763971 T3 20200601; FR 3013738 A1 20150529; FR 3013738 B1 20161014; JP 2017503083 A 20170126; JP 6207761 B2 20171004; MX 2016006766 A 20160908; PL 3074544 T3 20200518; RU 2016119955 A 20171229; US 2016289805 A1 20161006
DOCDB simple family (application)
EP 2014075534 W 20141125; CA 2930140 A 20141125; CN 201480064237 A 20141125; DK 14802886 T 20141125; EP 14802886 A 20141125; ES 14802886 T 20141125; FR 1361598 A 20131125; JP 2016554914 A 20141125; MX 2016006766 A 20141125; PL 14802886 T 20141125; RU 2016119955 A 20141125; US 201415038708 A 20141125