EP 2527482 A1 20121128 - PROCESS FOR PRODUCING A HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET WITH EXCELLENT MATERIAL STABILITY AND PROCESSABILITY
Title (en)
PROCESS FOR PRODUCING A HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET WITH EXCELLENT MATERIAL STABILITY AND PROCESSABILITY
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES HOCHFESTES FEUERVERZINKTES STAHLBLECH MIT HERVORRAGENDER MATERIALSTABILITÄT UND VERARBEITBARKEIT
Title (fr)
PROCÉDÉ DE PRODUCTION D'UNE TÔLE EN ACIER GALVANISÉ AU TREMPÉ À HAUTE RÉSISTANCE PRÉSENTANT UNE EXCELLENTE STABILITÉ MATÉRIELLE ET UNE EXCELLENTE APTITUDE AU TRAITEMENT
Publication
Application
Priority
- JP 2010262087 A 20101125
- JP 2010011948 A 20100122
- JP 2011051151 W 20110118
Abstract (en)
A high strength galvanized steel sheet having excellent formability and stability of mechanical properties, the steel sheet having a component composition containing C: 0.04% or more, and 0.13% or less, Si: 0.7% or more, and 2.3% or less, Mn: 0.8% or more, and 2.0% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.1% or less, N: 0.008% or less, and the remainder composed of Fe and incidental impurities on a percent by mass basis, wherein a steel microstructure includes 75% or more of ferrite phase, 1.0% or more of bainitic ferrite phase, and 1.0% or more, and 10.0% or less of pearlite phase on an area ratio basis, the area ratio of martensitic phase is 1.0% or more, and less than 5%, and the area ratio of martensitic phase/(area ratio of bainitic ferrite phase + area ratio of pearlite phase) ‰¤ 0.6 is satisfied.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/02 (2006.01); C21D 8/04 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/18 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01); C23C 2/28 (2006.01)
CPC (source: EP US)
C21D 8/0205 (2013.01 - EP); C21D 8/0405 (2013.01 - EP); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP); C22C 38/12 (2013.01 - EP); C22C 38/18 (2013.01 - EP); C23C 2/02 (2013.01 - EP US); C23C 2/0224 (2022.08 - EP US); C23C 2/024 (2022.08 - EP US); C23C 2/06 (2013.01 - EP); C23C 2/28 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP); C21D 2211/005 (2013.01 - EP); C21D 2211/008 (2013.01 - EP); C21D 2211/009 (2013.01 - EP)
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 2527482 A1 20121128; EP 2527482 A4 20170405; EP 2527482 B1 20191225; JP 2011168877 A 20110901; JP 5786317 B2 20150930; TW 201139731 A 20111116; TW I433961 B 20140411; WO 2011090180 A1 20110728
DOCDB simple family (application)
EP 11734786 A 20110118; JP 2010262087 A 20101125; JP 2011051151 W 20110118; TW 100102081 A 20110120