Global Patent Index - EP 3190201 A1

EP 3190201 A1 20170712 - THICK STEEL PLATE HAVING EXCELLENT CRYOGENIC TOUGHNESS

Title (en)

THICK STEEL PLATE HAVING EXCELLENT CRYOGENIC TOUGHNESS

Title (de)

DICKE STAHLPLATTE MIT HERVORRAGENDER KRYOGENER ZÄHIGKEIT

Title (fr)

TÔLE D'ACIER ÉPAISSE AYANT UNE EXCELLENTE RÉSISTANCE CRYOGÉNIQUE

Publication

EP 3190201 A1 20170712 (EN)

Application

EP 17000237 A 20131211

Priority

  • JP 2012272184 A 20121213
  • JP 2012285916 A 20121227
  • EP 13861920 A 20131211

Abstract (en)

This steel plate contains predetermined steel chemical compositions and has a Di value of 5.0 or more, where the Di value is defined by the steel chemical compositions. The steel plate includes a retained austenite phase (retained y) existing at -196°C in a volume fraction of 2.0% to 5.0% and has a specific content of Mn and Ni.

IPC 8 full level

C22C 38/00 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C22C 38/58 (2006.01)

CPC (source: EP)

C21D 9/46 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01)

Citation (applicant)

  • JP S49135813 A 19741227
  • JP S5113308 A 19760202 - NIPPON STEEL CORP
  • JP 2011241419 A 20111201 - SUMITOMO METAL IND, et al
  • YANO ET AL.: "Effects of ferrite-austenite two-phase region heat treatment of 6% Ni steel on low-temperature toughness", TETSU-TO HAGANE, vol. 6, 1973, pages 752 - 763
  • FURUYA ET AL.: "Development of 6% Ni steel for LNG tanks", CAMP-ISIJ, vol. 23, 2010, pages 1322
  • "Cryogenic-Temperature Impact Test of Austenitic Stainless Cast Steel", JOURNAL OF THE HIGH PRESSURE GAS SAFETY INSTITUTE OF JAPAN, vol. 24, pages 181

Citation (search report)

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)

EP 2933347 A1 20151021; EP 2933347 A4 20160727; CN 104854252 A 20150819; CN 104854252 B 20161012; EP 3190201 A1 20170712; KR 101711774 B1 20170302; KR 20150082611 A 20150715; WO 2014092129 A1 20140619

DOCDB simple family (application)

EP 13861920 A 20131211; CN 201380062597 A 20131211; EP 17000237 A 20131211; JP 2013083239 W 20131211; KR 20157015524 A 20131211