Global Patent Index - EP 2164998 A1

EP 2164998 A1 20100324 - HARDENED MARTENSITIC STEEL HAVING A LOW OR ZERO CONTENT OF COBALT, PROCESS FOR MANUFACTURING A PART FROM THIS STEEL, AND PART THUS OBTAINED

Title (en)

HARDENED MARTENSITIC STEEL HAVING A LOW OR ZERO CONTENT OF COBALT, PROCESS FOR MANUFACTURING A PART FROM THIS STEEL, AND PART THUS OBTAINED

Title (de)

GEHÄRTETER MARTENSITISCHER STAHL MIT GERINGEM ODER OHNE KOBALTANTEIL, VERFAHREN ZUR HERSTELLUNG EINES TEILS AUS DIESEM STAHL UND IN DIESEM VERFAHREN HERGESTELLTES TEIL

Title (fr)

ACIER MARTENSITIQUE DURCI À TENEUR FAIBLE OU NULLE EN COBALT, PROCÉDÉ DE FABRICATION D'UNE PIÈCE À PARTIR DE CET ACIER, ET PIÈCE AINSI OBTENUE

Publication

EP 2164998 A1 (FR)

Application

EP 08806015 A

Priority

  • FR 2008051080 W
  • FR 0756379 A

Abstract (en)

[origin: WO2009007562A1] Steel characterized in that its composition is, in percentages by weight: - C = 0.20 - 0.30%; - Co = traces - 1%; - Cr = 2 - 5%; - Al = 1 - 2%; - Mo + W/2 = 1 - 4%; - V = traces - 0.3%; - Nb = traces - 0.1%; - B = traces - 30 ppm; - Ni = 11 - 16% with Ni = 7 + 3.5 Al; - Si = traces - 1.0%; - Mn = traces - 2.0%; - Ca = traces - 20 ppm; - rare earths = traces - 100 ppm; - when N < 10 ppm, Ti + Zr/2 = traces - 100 ppm with Ti + Zr/2 < 10 N; - when 10 ppm < N < 20 ppm, Ti + Zr/2 = traces - 150 ppm; - O = traces - 50 ppm; - N = traces - 20 ppm; - S = traces - 20 ppm; - Cu = traces - 1%; - P = traces - 200 ppm, the remainder being iron and inevitable impurities resulting from the smelting. Process for manufacturing a part from this steel, and part thus obtained.

IPC 8 full level

C21D 6/00 (2006.01); B64C 25/02 (2006.01); B64D 27/00 (2006.01); C21D 6/02 (2006.01); C21D 6/04 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01); C22C 38/52 (2006.01); F16D 3/00 (2006.01); F16H 3/00 (2006.01)

CPC (source: EP US)

C21D 6/004 (2013.01 - EP US); C21D 6/02 (2013.01 - EP US); C21D 6/04 (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); C21D 1/58 (2013.01 - EP US)

Citation (search report)

See references of WO 2009007562A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

WO 2009007562 A1 20090115; AT 490347 T 20101215; CA 2694844 A1 20090115; CA 2694844 C 20150728; CN 101815797 A 20100825; CN 101815797 B 20120516; DE 602008003811 D1 20110113; DK 2164998 T3 20110314; EP 2164998 A1 20100324; EP 2164998 B1 20101201; ES 2352788 T3 20110223; JP 2010533240 A 20101021; JP 5328785 B2 20131030; PL 2164998 T3 20110531; RU 2010104452 A 20110820; RU 2456367 C2 20120720; SI 2164998 T1 20110131; US 2010200119 A1 20100812; US 9045806 B2 20150602

DOCDB simple family (application)

FR 2008051080 W 20080618; AT 08806015 T 20080618; CA 2694844 A 20080618; CN 200880103287 A 20080618; DE 602008003811 T 20080618; DK 08806015 T 20080618; EP 08806015 A 20080618; ES 08806015 T 20080618; JP 2010515557 A 20080618; PL 08806015 T 20080618; RU 2010104452 A 20080618; SI 200830116 T 20080618; US 66829708 A 20080618