Title:
HIGH TENSILE STRENGTH STEEL PLATE FOR WELDING STRUCTURAL USE EXCELLENT IN FATIGUE STRENGTH OF WELDED JOINT
Document Type and Number:
Japanese Patent JPH08209295
Kind Code:
A
Abstract:
PURPOSE: To produce a high tensile strength steel plate for welding structural use excellent in the fatigue strength of a welded joint and having tensile strength of 60 to 80kgf/mm2 class.
CONSTITUTION: This steel plate has s comspn. contg., by weight, 0.02 to 0.20% C, 0.6 to 1.6% Si, 0.5 to 2.0% Mn, ≤0.050% P and ≤0.050% S, furthermore contg., at need, one or ≥ two kinds among 0.1 to 2.5% Cu, 0.1 to 5.0% Ni, 0.1 to 1.0% Cr, 0.1 to 1.5% Mo, 0.005 to 0.05% V and 0.005 to 0.05% Nb, satisfying 0.30≤Ceq(%)≤0.60, and the balance Fe with inevitable components; where Ceq(%)=C+Mn/6+(Cu+Ni)/15+(Cr+Mo+V)/5+Nb/3.
Inventors:
KOSEKI TADASHI
AIHARA SHUJI
MABUCHI HIDESATO
AIHARA SHUJI
MABUCHI HIDESATO
Application Number:
JP1545095A
Publication Date:
August 13, 1996
Filing Date:
February 01, 1995
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C22C38/00; C22C38/04; C22C38/50; C22C38/60; (IPC1-7): C22C38/00; C22C38/04; C22C38/50; C22C38/60
Attorney, Agent or Firm:
Kazuo Ozeki
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