Title:
STEEL HAVING EXCELLENT SUPERHIGH HEAT INPUT WELDING CHARACTERISTIC
Document Type and Number:
Japanese Patent JP3852295
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide steel which suffers little deterioration in toughness even in superhigh heat input welding and can contribute to the reduction in the operation cost of welding structures.
SOLUTION: The steel has a composition containing, by mass, 0.03 to 0.1% C, 0.01 to 0.5% Si, 0.5 to 2% Mn, >0.8 to 2% Cu, 0.005 to 0.025% Ti, 0.002 to 0.008% N, 0.002 to 0.05% sol.Al and ≤0.0035% O (oxygen) and the balance Fe with impurities. The occupation ratio of a ferritic structure in the metallic structure is ≤50%.
Inventors:
Tomoya Fujiwara
Masahiko Hamada
Takeshi Ichinose
Hideharu Okaguchi
Masahiko Hamada
Takeshi Ichinose
Hideharu Okaguchi
Application Number:
JP2001083919A
Publication Date:
November 29, 2006
Filing Date:
March 23, 2001
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
C22C38/00; C22C38/16; C22C38/58; (IPC1-7): C22C38/00; C22C38/16; C22C38/58
Domestic Patent References:
| JP62056518A | ||||
| JP9041080A | ||||
| JP2125812A | ||||
| JP8209287A |
Attorney, Agent or Firm:
Mikiji Sugioka
Michio Mori
Terutada Hogami
Michio Mori
Terutada Hogami