Title:
HIGH STRENGTH AND HIGH TOUGHNESS CAST STEEL
Document Type and Number:
Japanese Patent JP2001329332
Kind Code:
A
Abstract:
To provide cast steel excellent in strength, toughness and weldability and used for castings, particularly for structural members such (as bridges and vehicle parts.
This high strength and high toughness cast steel has a componential composition containing, by weight, 0.07 to 0.12% C, 0.1 to 0.5% Si, 0.6 to 1.0% Mn, ≤0.003% P, ≤0.006% S, 3.5 to 5.0% Ni, 0.2 to 0.5% Cr, 0.3 to 0.6% Mo, 0.1 to 0.2% V and ≤0.1% Al, and the balance Fe with inevitable impurities. Further, in the above componential composition, the carbon equivalent (Ceq) defined by the following formula is desirably controlled to ≤0.5% from the viewpoint of its weldability.
Inventors:
HANDA TAKUO
HOSHIYAMA MASAYUKI
NAKADA TAKESHI
YAMAMOTO HIROMITSU
KITAKANJI HIROSHI
HOSHIYAMA MASAYUKI
NAKADA TAKESHI
YAMAMOTO HIROMITSU
KITAKANJI HIROSHI
Application Number:
JP2000143687A
Publication Date:
November 27, 2001
Filing Date:
May 16, 2000
Export Citation:
Assignee:
NIPPON CASTING CO LTD
International Classes:
C21D6/00; C22C38/00; C22C38/46; (IPC1-7): C22C38/00; C21D6/00; C22C38/46
Attorney, Agent or Firm:
Kawawa Takaho