EP 0615551 B1 19970226 - WELDABLE HIGH-STRENGTH STRUCTURAL STEEL WITH 13 % CHROMIUM
Title (en)
WELDABLE HIGH-STRENGTH STRUCTURAL STEEL WITH 13 % CHROMIUM
Title (de)
SCHWEISSBARER HOCHFESTER BAUSTAHL MIT 13 % CHROM
Title (fr)
ACIER SOUDABLE A RESISTANCE ELEVEE AVEC 13 % DE CHROME
Publication
Application
Priority
- DE 4140459 A 19911205
- DE 9200987 W 19921123
Abstract (en)
[origin: WO9311270A1] The invention relates to a process for the production of seamless steel pipes of flat products (strip or sheet) for pipes or containers intended for the conveyance, transport or processing of gaseous or liquid hydrocarbons containing CO2 and water and possibly small proportions of H2S, and which are resistant to stress corrosion cracking while at the same time being easily weldable and having a 0.2% yield strength of at least 450 N/mm<2>. An Ni-containing steel is used which also has the composition below (in wt %): min. 0.015 % C, 0.15-0.50 % Si, max. 2.00 % Mn, max. 0.020 % P, max. 0.003 % S, 12.0-13.8 % Cr, 0.002-0.02 % N, 0.01-0.05 % Nb, the remainder iron and the usual impurities. According to the invention, it is proposed that the Ni content be limited to a maximum of 0.25 %, the Mn content be at least 1.0 %, the C content be limited to 0.035 % and that as additional alloying component, 0.01-1.2 % Mo be included.
IPC 1-7
IPC 8 full level
C21D 8/02 (2006.01); C21D 8/10 (2006.01); C22C 38/00 (2006.01); C22C 38/22 (2006.01); C22C 38/26 (2006.01); C22C 38/40 (2006.01); C22C 38/48 (2006.01)
CPC (source: EP US)
C22C 38/22 (2013.01 - EP US); C22C 38/26 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL SE
DOCDB simple family (publication)
WO 9311270 A1 19930610; AT E149211 T1 19970315; BR 9206853 A 19951121; CA 2125178 A1 19930610; CN 1077230 A 19931013; DE 59208076 D1 19970403; EP 0615551 A1 19940921; EP 0615551 B1 19970226; ES 2098556 T3 19970501; JP H07501581 A 19950216; NO 302302 B1 19980216; NO 941164 D0 19940329; NO 941164 L 19940329; RU 2102521 C1 19980120; RU 94030489 A 19970527; US 5462615 A 19951031
DOCDB simple family (application)
DE 9200987 W 19921123; AT 92923679 T 19921123; BR 9206853 A 19921123; CA 2125178 A 19921123; CN 92114815 A 19921205; DE 59208076 T 19921123; EP 92923679 A 19921123; ES 92923679 T 19921123; JP 50969793 A 19921123; NO 941164 A 19940329; RU 94030489 A 19921123; US 24433494 A 19940725