EP 1700925 B1 20090909 - High-strength air cooled steel alloy and hot worked product
Title (en)
High-strength air cooled steel alloy and hot worked product
Title (de)
Hochfester luftgekühlter Stahl und daraus resultiertes warmverformte Produkt.
Title (fr)
Acier à haute résistance mechanique refroidi par air et son produit à chaud.
Publication
Application
Priority
EP 05101801 A 20050309
Abstract (en)
[origin: EP1700925A1] The invention relates to a steel alloy, which in hot-worked condition has a ferritic-pearlitic microstructure and austenite grain size coarser than ASTM 10 (coarser than 10 µm), and which has a chemical composition of: C 0,15...0,6 percent by weight Si 1,25...2,0 percent by weight Mn 0,5...1,6 percent by weight S 0...0,2 percent by weight Cr 0 ...1,5 percent by weight Mo 0,02...0,1 percent by weight Al 0 ...0,1 1 percent by weight V 0 ...0,2 percent by weight N 0 ...0,04 percent by weight Nb 0 ...0,1 percent by weight Ti 0 ...0,05 percent by weight. The invention relates additionally to methods for manufacturing ferritic-pearlitic hot forged products and hot-rolled steel bars having a high yield strength, high fatigue strength and good machinability.
IPC 8 full level
C22C 38/00 (2006.01)
CPC (source: EP)
C21D 9/30 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/60 (2013.01); C23C 8/26 (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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1700925 A1 20060913; EP 1700925 B1 20090909; AT E442464 T1 20090915; DE 602005016522 D1 20091022
DOCDB simple family (application)
EP 05101801 A 20050309; AT 05101801 T 20050309; DE 602005016522 T 20050309