초록 ▼

The invention provides a ferritic stainless steel alloy useful for strip steel used in exhaust catalytic converters, consisting essentially of in weight %, ≤0.02% C, 19-21% Cr, 4.5-6% Al, 0.01-0.03% Ce, 0.02-0.05% total of rare earth elements, ≥0.015% total Mg+Ca, and balance Fe plus impurities. The

The invention provides a ferritic stainless steel alloy useful for strip steel used in exhaust catalytic converters, consisting essentially of in weight %, ≤0.02% C, 19-21% Cr, 4.5-6% Al, 0.01-0.03% Ce, 0.02-0.05% total of rare earth elements, ≥0.015% total Mg+Ca, and balance Fe plus impurities. The alloy can contain 0.2-0.4% Mn, 0.1-0.4% Si, ≤0.5% Ni, ≤0.02% P, ≤0.005% S, ≤0.025% N, 0.015-0.025% Mg, 0.0005-0.0018% Ca, 0.005-0.015% La, 0.02-0.03% Ce, ≤0.015% Ti and ≤0.015% Zr.

대표청구항 ▼

A ferritic stainless steel alloy useful as catalytic converter material consisting essentially, by weight, of: ≤0.02% C 19-21% Cr 4.5-6% Al 0.01-0.03% Ce 0.02-0.05% total of rare earth elements ≤0.015% Ti ≤0.005% Zr ≥0.015% Mg+Ca ≤0.05% Mo ≤0.007% N balance Fe plus impurities, a total amount of Mg a

A ferritic stainless steel alloy useful as catalytic converter material consisting essentially, by weight, of: ≤0.02% C 19-21% Cr 4.5-6% Al 0.01-0.03% Ce 0.02-0.05% total of rare earth elements ≤0.015% Ti ≤0.005% Zr ≥0.015% Mg+Ca ≤0.05% Mo ≤0.007% N balance Fe plus impurities, a total amount of Mg and Ca being less than an amount which adversely affects surface rolling and oxidation properties of the alloy.