EP 1218559 B1 20030521 - 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)
Designated contracting state (EPC)
DE ES IT
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