Global Patent Index - EP 3221484 B1

EP 3221484 B1 20201230 - METHOD FOR MANUFACTURING A HIGH-STRENGTH AIR-HARDENING MULTIPHASE STEEL STRIP HAVING EXCELLENT PROCESSING PROPERTIES

Title (en)

METHOD FOR MANUFACTURING A HIGH-STRENGTH AIR-HARDENING MULTIPHASE STEEL STRIP HAVING EXCELLENT PROCESSING PROPERTIES

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES HOCHFESTEN LUFTHÄRTENDEN MEHRPHASENSTAHLS MIT HERVORRAGENDEN VERARBEITUNGSEIGENSCHAFTEN

Title (fr)

PROCÉDÉ DE PRODUCTION D'UNE BANDE EN ACIER POLYPHASÉ, DURCISSANT À L'AIR, AYANT UNE HAUTE RÉSISTANCE ET AYANT D'EXCELLENTES PROPRIÉTÉS DE MISE EN OEUVRE

Publication

EP 3221484 B1 20201230 (DE)

Application

EP 15831216 A 20151104

Priority

  • DE 102014017273 A 20141118
  • DE 2015100467 W 20151104

Abstract (en)

[origin: WO2016078643A1] The invention relates to a high-strength air-hardenable multiphase steel which has excellent processing properties and consists of a composition defined in claim 1 and in which, in order to allow for a process window that is as large as possible for the continuous annealing of hot and cold strips from said steel, the combined content of Mn+Si+Cr is adjusted as follows in accordance with the strip thickness obtained: up to 1.00 mm: sum of Mn+Si+Cr ≥ 2.350 and ≤ 2.500 wt% more than 1.00 and up to 2.00 mm: sum of Mn+Si+Cr > 2.500 and ≤ 2.950 wt% more than 2.00 mm: sum of Mn+Si+Cr > 2.950 and ≤ 3.250 wt%.

IPC 8 full level

C21D 1/76 (2006.01); C21D 1/26 (2006.01); C21D 1/84 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 8/04 (2006.01); C21D 9/48 (2006.01); C21D 9/56 (2006.01); C21D 9/58 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01); C23C 2/26 (2006.01); C23C 2/40 (2006.01)

CPC (source: EP KR RU US)

C21D 1/26 (2013.01 - EP US); C21D 1/76 (2013.01 - EP US); C21D 1/84 (2013.01 - EP US); C21D 6/002 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/007 (2013.01 - EP US); C21D 8/02 (2013.01 - RU); C21D 8/0226 (2013.01 - KR US); C21D 8/0236 (2013.01 - KR US); C21D 8/0247 (2013.01 - EP US); C21D 8/0263 (2013.01 - KR); C21D 8/0273 (2013.01 - EP KR US); C21D 8/0447 (2013.01 - EP US); C21D 8/0473 (2013.01 - EP US); C21D 9/46 (2013.01 - KR RU US); C21D 9/48 (2013.01 - EP US); C21D 9/561 (2013.01 - EP KR US); C21D 9/562 (2013.01 - EP US); C21D 9/58 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP RU US); C22C 38/04 (2013.01 - EP KR RU US); C22C 38/06 (2013.01 - EP US); C22C 38/26 (2013.01 - EP KR RU US); C22C 38/28 (2013.01 - EP KR RU US); C22C 38/32 (2013.01 - EP KR RU US); C22C 38/38 (2013.01 - EP KR RU US); C22C 38/58 (2013.01 - US); C23C 2/0038 (2022.08 - EP KR RU US); C23C 2/02 (2013.01 - EP KR RU US); C23C 2/0224 (2022.08 - EP KR RU US); C23C 2/06 (2013.01 - EP US); C23C 2/26 (2013.01 - EP KR RU US); C23C 2/40 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/005 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)

Citation (examination)

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 102014017273 A1 20160519; EP 3221484 A1 20170927; EP 3221484 B1 20201230; KR 20170084209 A 20170719; RU 2017120940 A 20181220; RU 2017120940 A3 20181220; RU 2707769 C2 20191129; US 10640855 B2 20200505; US 2018347018 A1 20181206; WO 2016078643 A1 20160526; WO 2016078643 A9 20160714

DOCDB simple family (application)

DE 102014017273 A 20141118; DE 2015100467 W 20151104; EP 15831216 A 20151104; KR 20177015845 A 20151104; RU 2017120940 A 20151104; US 201515527794 A 20151104