Global Patent Index - EP 1052296 A3

EP 1052296 A3 20020626 - Armour plate and process for its manufacture

Title (en)

Armour plate and process for its manufacture

Title (de)

Panzerblech und Verfahren zu seiner Herstellung

Title (fr)

Plaque de blindage et procédé pour sa fabrication

Publication

EP 1052296 A3 20020626 (DE)

Application

EP 00109687 A 20000508

Priority

DE 19921327 A 19990508

Abstract (en)

[origin: EP1052296A2] A hot rolled armor plate is made of a low carbon, low alloy steel containing carbonitride-forming vanadium as precipitation hardening element. A novel hot rolled armor plate consists of a steel of composition (by wt.) 0.15-0.20% C, 0.10-0.50% Si, 0.70-1.70% Mn, less than 0.02% P, less than 0.005% S, less than 0.01% N, 0.009-0.10% Al, 0.50-1.00% Cr, 0.20-0.70% Mo, 1.00-2.50% Ni, 0.05-0.25% V, balan Fe and impurities. An Independent claim is also included for production of the above armor plate by hot rolling, double austenitizing at 880-980 degrees C, quenching and tempering at 150-550 degrees C.

IPC 1-7

C21D 9/42; C21D 8/02; C22C 38/46

IPC 8 full level

C21D 8/02 (2006.01); C21D 9/42 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C21D 1/18 (2006.01); C21D 1/78 (2006.01)

CPC (source: EP)

C21D 8/0263 (2013.01); C21D 9/42 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C21D 1/18 (2013.01); C21D 1/78 (2013.01)

Citation (search report)

  • [XY] WO 9909232 A1 19990225 - MANNESMANN AG [DE], et al
  • [YA] US 4814141 A 19890321 - IMAI YASUHO [JP], et al
  • [DYA] DE 4223895 C1 19940317 - THYSSEN STAHL AG [DE]
  • [XY] MUESGEN ET AL: "High strength fine-grained steels, that have been heat treated using water, with minimum yield points up to 90kg/mm2", DECHEMA MONOGRAPHIEN, VERLAG CHEMIE, WEINHEIM,, DE, vol. 76, 1974, pages 151 - 162, XP002089185, ISSN: 0070-315X
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 08 29 September 1995 (1995-09-29)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 014, no. 265 (C - 0726) 8 June 1990 (1990-06-08)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1052296 A2 20001115; EP 1052296 A3 20020626; EP 1052296 B1 20041215; AT E284977 T1 20050115; DE 50008938 D1 20050120; DK 1052296 T3 20050411; ES 2234476 T3 20050701

DOCDB simple family (application)

EP 00109687 A 20000508; AT 00109687 T 20000508; DE 50008938 T 20000508; DK 00109687 T 20000508; ES 00109687 T 20000508