FERRITIC CHROMIUM STAINLESS STEEL CONTAINING AL

PURPOSE:To obtain the titled steel having improved toughness and corrosion resistance by specifying a composition consisting of Cr, Mo, Ni, Al and Fe and by reducing the amounts of C, N, S, Si, Mn and O contained in the composition as impurities. CONSTITUTION:Ferritic chromium stainless steel contg....

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Bibliographic Details
Main Authors MASAME KAORU, TARUYA YOSHIO, KUDOU TAKEO
Format Patent
LanguageEnglish
Published 10.09.1984
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To obtain the titled steel having improved toughness and corrosion resistance by specifying a composition consisting of Cr, Mo, Ni, Al and Fe and by reducing the amounts of C, N, S, Si, Mn and O contained in the composition as impurities. CONSTITUTION:Ferritic chromium stainless steel contg. Al is obtd. by providing a composition consisting of, by weight, 15.00-50.00% Cr, <=5.00% Mo, 0.01- 6.00% Ni, <=1.00% Al and the balance Fe with impurities and by reducing the amounts of C, N, S, Si, Mn and O as the impurities to <=0.0060% C, <=0.0150% N, <=0.0020% S, <=0.15% Si, <=0.15% Mn and <=0.015% O by refining. The composition may further contain 5X(C+N)%-1.00% Ti and/or 8X(C+N)% -1.00% Nb. The steel has superior toughness and intergranular corrosion resistance at the weld zone, and it has superior corrosion resistance, especially pitting corrosion resistance and acid resistance at the base metal.
Bibliography:Application Number: JP19830032879