EP 1218559 A2 20020703 - USE OF A STEEL ALLOY FOR PRODUCING HIGH-TENSILE SEAMLESS STEEL TUBES
Title (en)
USE OF A STEEL ALLOY FOR PRODUCING HIGH-TENSILE SEAMLESS STEEL TUBES
Title (de)
VERWENDUNG EINER STAHLLEGIERUNG ZUR HERSTELLUNG HOCHFESTER NAHTLOSER STAHLROHRE
Title (fr)
UTILISATION D'UN ALLIAGE D'ACIER POUR PRODUIRE DES TUBES D'ACIER SANS JOINT A RESISTANCE ELEVEE
Publication
Application
Priority
- DE 0002787 W 20000814
- DE 19942641 A 19990830
Abstract (en)
[origin: DE19942641A1] The invention relates to the use of a steel alloy that contains (in % by weight):C 0.12-0.25 %; Si </= 0.40 %; Mn 1.20-1.80 %; P </= 0.025 %; S </= 0.010 %; Al 0.01-0.06 %; Cr 0.20-0.50 %; Mo 0.20-0.50 %; V 0.03-0.10 %; Cu </= 0.20 %; N </= 0.02 %, remainder iron and usual impurities, for producing high-tensile, weldable seamless steel tubes to be used as constructional tubes. The steel tubes are hot-rolled and are then quenched and tempered. The invention is especially characterized in that the steel alloy additionally contains 0.30-1.00 % W and that the Ni content possibly present in the alloy does not exceed 0.20 %.
IPC 1-7
IPC 8 full level
C21D 9/08 (2006.01); C22C 38/12 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/38 (2006.01); C21D 8/10 (2006.01)
CPC (source: EP US)
C22C 38/12 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/24 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C21D 8/10 (2013.01 - EP US)
Citation (search report)
See references of WO 0116391A2
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)
DE 19942641 A1 20010322; DE 50002289 D1 20030626; EP 1218559 A2 20020703; EP 1218559 B1 20030521; ES 2199865 T3 20040301; MX PA02001916 A 20030721; US 2002150497 A1 20021017; WO 0116391 A2 20010308; WO 0116391 A3 20010830
DOCDB simple family (application)
DE 19942641 A 19990830; DE 0002787 W 20000814; DE 50002289 T 20000814; EP 00965759 A 20000814; ES 00965759 T 20000814; MX PA02001916 A 20000814; US 8548802 A 20020228