EP 1881083 B1 20091230 - Workpiece made of a high-strength steel alloy and its use
Title (en)
Workpiece made of a high-strength steel alloy and its use
Title (de)
Werkstück aus einer hochfesten Stahllegierung und dessen Verwendung
Title (fr)
Pièce en acier à haute résistance mécanique et sa utilisation
Publication
Application
Priority
DE 102006033813 A 20060719
Abstract (en)
[origin: EP1881083A1] Workpiece made from a high strength steel alloy contains (in wt.%) 0.11-0.18 carbon, 0.10-0.30 silicon, 1.60-2.20 manganese, less than 0.0015 phosphorus, less than 0.010 sulfur, 1.00-2.00 chromium, less than 0.020 nitrogen, 0.020-0.060 niobium, 0.001-0.004 boron, 0.001-0.050 titanium and a balance of iron. A semi-finished product in the form of sheet metal or tube with a ductile ferritic-perlitic structure is heat treated by austenizing, cooling in air and then optionally tempered. The workpiece has a tensile strength Rm of more than 1.200 MPa at a fraction elongation A5 of more than 12 %.
IPC 8 full level
C22C 38/00 (2006.01)
CPC (source: EP)
C21D 1/25 (2013.01); C21D 1/56 (2013.01); C22C 38/02 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C21D 2211/002 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1881083 A1 20080123; EP 1881083 B1 20091230; AT E453733 T1 20100115; DE 102007033950 A1 20080131; DE 502007002467 D1 20100211
DOCDB simple family (application)
EP 07014185 A 20070719; AT 07014185 T 20070719; DE 102007033950 A 20070719; DE 502007002467 T 20070719