EP 0128139 A4 19850916 - HIGH STRENGTH, LOW CARBON, DUAL PHASE STEEL RODS AND WIRES AND PROCESS FOR MAKING SAME.
Title (en)
HIGH STRENGTH, LOW CARBON, DUAL PHASE STEEL RODS AND WIRES AND PROCESS FOR MAKING SAME.
Title (de)
HOCHFESTE ZWEIPHASIGE STAHLSTANGEN UND DRÄHTE MIT NIEDRIGEM KOHLENSTOFFGEHALT, SOWIE DEREN HERSTELLUNGSVERFAHREN.
Title (fr)
FILS ET TIGES D'ACIER DOUX A DOUBLE PHASE ET A GRANDE RESISTANCE, AINSI QUE LEUR PROCEDE DE FABRICATION.
Publication
Application
Priority
US 8201722 W 19821209
Abstract (en)
[origin: WO8402354A1] A high strength, high ductility, low carbon, dual phase steel wire, bar or rod and process for making the same. The steel wire, bar or rod is produced by cold drawing to the desired diameter in a single multipass operation a low carbon steel composition characterized by a duplex microstructure consisting essentially of a strong second phase dispersed in a soft ferrite matrix with a microstructure and morphology having sufficient cold formability to allow reductions in cross-sectional area of up to about 99.9 %. Tensile strengths of at least 120 ksi to over 400 ksi may be obtained.
IPC 1-7
IPC 8 full level
B21C 1/00 (2006.01); C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/12 (2006.01)
CPC (source: EP KR)
B21C 1/00 (2013.01 - KR); C21D 8/06 (2013.01 - EP); D07B 1/066 (2013.01 - EP); C21D 2211/005 (2013.01 - EP); C21D 2211/008 (2013.01 - EP)
Citation (search report)
- [X] EP 0058016 A1 19820818 - KOBE STEEL LTD [JP]
- [X] FR 2238768 A1 19750221 - SGTM [FR]
- [X] PATENTS ABSTRACTS OF JAPAN, vol. 1, no. 27, March 28, 1977, page 1396, C 76; & JP-A-51 144 329 (KOBE SEIKOSHO K.K.) 11-12-1976
Designated contracting state (EPC)
AT BE CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
WO 8402354 A1 19840621; AU 1108783 A 19840705; AU 561976 B2 19870521; BR 8208108 A 19841211; CA 1217997 A 19870217; DK 359084 A 19840720; DK 359084 D0 19840720; EP 0128139 A1 19841219; EP 0128139 A4 19850916; ES 528241 A0 19850416; ES 8504946 A1 19850416; FI 78929 B 19890630; FI 78929 C 19891010; FI 842931 A0 19840720; FI 842931 A 19840720; IN 157840 B 19860705; IT 1194512 B 19880922; IT 8324103 A0 19831209; JP S60500177 A 19850207; KR 840006920 A 19841204; KR 890003401 B1 19890920; KR 890003402 B1 19890920; NO 843184 L 19840808; NZ 206472 A 19860314; PT 77796 A 19840101; PT 77796 B 19860327; ZA 83757 B 19840328
DOCDB simple family (application)
US 8201722 W 19821209; AU 1108783 A 19821209; BR 8208108 A 19821209; CA 442845 A 19831208; DK 359084 A 19840720; EP 83900309 A 19821209; ES 528241 A 19831209; FI 842931 A 19840720; IN 117CA1983 A 19830201; IT 2410383 A 19831209; JP 50042783 A 19821209; KR 830005825 A 19831209; KR 890009331 A 19890628; NO 843184 A 19840808; NZ 20647283 A 19831202; PT 7779683 A 19831209; ZA 83757 A 19830204