EP 1602742 B1 20090715 - High-strength steel for large-scaled forging, and crankshaft
Title (en)
High-strength steel for large-scaled forging, and crankshaft
Title (de)
Hochfester Stahl für die Herstellung von großen Schmiedestücken, insbesondere von Kurbelwellen
Title (fr)
Acier à haute résistance pour la fabrication de grosses pièces forgées notamment de villebrequins
Publication
Application
Priority
JP 2004163638 A 20040601
Abstract (en)
[origin: EP1602742A1] A high-strength steel for a large-scaled forging consists essentially of, by mass, C: 0.30 to 0.50 %, Si: more than 0.15 %, but not more than 0.40 %, Mn: 0.80 to 1.20 %, Ni: 0.80 to 2.5 %, Cr: 1.0 to 3.0 %, Mo: 0.35 to 0.70 %, V: 0.10 to 0.25 %, and balance: Fe and unavoidable impurities. The high-strength steel is low in cost as compared to 3.5NiCrMo steel proposed as high-strength Ni-Cr-Mo steel for large forgings such as a rotor shaft of a generator, and has excellent strength and toughness as compared to 34CrNiMo6.
IPC 8 full level
B21K 1/08 (2006.01); C21D 6/00 (2006.01); C21D 9/30 (2006.01); C22C 38/00 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); F16C 3/06 (2006.01)
CPC (source: EP KR)
C21D 9/30 (2013.01 - EP); C22C 38/18 (2013.01 - KR)
Designated contracting state (EPC)
CZ DE ES
DOCDB simple family (publication)
EP 1602742 A1 20051207; EP 1602742 B1 20090715; DE 602005015383 D1 20090827; ES 2328365 T3 20091112; JP 2005344149 A 20051215; JP 4332070 B2 20090916; KR 100721645 B1 20070523; KR 20060046214 A 20060517
DOCDB simple family (application)
EP 05011252 A 20050524; DE 602005015383 T 20050524; ES 05011252 T 20050524; JP 2004163638 A 20040601; KR 20050044894 A 20050527