Global Patent Index - EP 2547800 B1

EP 2547800 B1 20180103 - METHOD FOR PRODUCING WORKPIECES FROM LIGHTWEIGHT STEEL HAVING MATERIAL PROPERTIES THAT CAN BE ADJUSTED OVER THE WALL THICKNESS

Title (en)

METHOD FOR PRODUCING WORKPIECES FROM LIGHTWEIGHT STEEL HAVING MATERIAL PROPERTIES THAT CAN BE ADJUSTED OVER THE WALL THICKNESS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON WERKSTÜCKEN AUS LEICHTBAUSTAHL MIT ÜBER DIE WANDDICKE EINSTELLBAREN WERKSTOFFEIGENSCHAFTEN

Title (fr)

PROCÉDÉ DE FABRICATION DE PIÈCES EN ACIER LÉGER DE CONSTRUCTION AYANT DES PROPRIÉTÉS DE MATÉRIAU AJUSTABLES SUIVANT L'ÉPAISSEUR DE PAROI

Publication

EP 2547800 B1 20180103 (DE)

Application

EP 11715650 A 20110210

Priority

  • DE 102010034161 A 20100810
  • DE 102010011991 A 20100316
  • DE 2011000128 W 20110210

Abstract (en)

[origin: WO2011113404A1] The invention relates to a method for producing workpieces from an austenitic lightweight steel having material properties that can be adjusted over the wall thickness or strip thickness and having an alloy composition (in weight percent) comprising: C 0.2 to = 1.0; Al 0.05 to < 15.0; Si 0.05 to = 6.0; Mn 9.0 to < 30.0; remainder iron including common steel companion elements, with the optional addition of Cr, Cu, B, Ti, Zr, V, and Nb with Cr = 6.5; Cu = 4.0; Ti+Zr = 0.7; Nb+V = 0.5; B = 0.1. The method according to the invention is characterized in that the workpiece is subjected to a particular decarburizing annealing treatment in an oxidizing atmosphere.

IPC 8 full level

C21D 1/76 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/42 (2006.01); C21D 9/46 (2006.01); C22C 38/04 (2006.01)

CPC (source: EP KR US)

C21D 1/76 (2013.01 - KR); C21D 6/005 (2013.01 - EP KR US); C21D 8/0226 (2013.01 - KR); C21D 8/0236 (2013.01 - KR); C21D 8/0257 (2013.01 - EP KR US); C21D 9/42 (2013.01 - KR); C21D 9/46 (2013.01 - KR); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/18 (2013.01 - KR); C21D 1/76 (2013.01 - EP US); C21D 9/42 (2013.01 - EP US); C21D 9/46 (2013.01 - 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

DOCDB simple family (publication)

DE 102010034161 A1 20110922; DE 102010034161 B4 20140102; EP 2547800 A1 20130123; EP 2547800 B1 20180103; KR 101707019 B1 20170215; KR 20130006461 A 20130116; RU 2012143967 A 20140427; RU 2544970 C2 20150320; US 2013048150 A1 20130228; US 9593392 B2 20170314; WO 2011113404 A1 20110922

DOCDB simple family (application)

DE 102010034161 A 20100810; DE 2011000128 W 20110210; EP 11715650 A 20110210; KR 20127025420 A 20110210; RU 2012143967 A 20110210; US 201113634980 A 20110210