HIGH TENSILE STRENGTH STEEL FOR WELDING EXCELLENT IN TOUGHNESS OF WELDING HEAT AFFECTED ZONE AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To provide steel excellent in HAZ toughness. SOLUTION: This steel is the one having a compsn. contg., by weight, 0.01 to 0.l5% C, <=0.6% Si, 0.5 to 2.5% Mn <=0.030% P, <=0.005% S, <=0.010% Al, 0.0001 to 0.0060% Mg, 0.001 to 0.004% O, 0.001 to 0.006% N, and the balan...

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Bibliographic Details
Main Authors HARA TAKUYA, TAMEHIRO HIROSHI, UEMORI RYUJI
Format Patent
LanguageEnglish
Published 29.08.2000
Edition7
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PROBLEM TO BE SOLVED: To provide steel excellent in HAZ toughness. SOLUTION: This steel is the one having a compsn. contg., by weight, 0.01 to 0.l5% C, <=0.6% Si, 0.5 to 2.5% Mn <=0.030% P, <=0.005% S, <=0.010% Al, 0.0001 to 0.0060% Mg, 0.001 to 0.004% O, 0.001 to 0.006% N, and the balance Fe with inevitable impurities, and in which Mg oxides or multiple oxides of Mg and Al of 0.0001 to 1 μm particle size are dispersed by >=0.01 pieces/μmu2.
Bibliography:Application Number: JP19990031491