A ferritic stainless steel characterized by superior toughness both prior to and after welding, and by superior crevice and integranular corrosion resistance consists of, by weight, up to 0.08% carbon, up to 0.06% nitrogen, from 25.000 to 35.00% chromium, from 3.60 to 5.60% molybdenum, up to 2.00% manganese, from 2.00 to 5.00% nickel, up to 2.00% silicon, up to 0.5% aluminum, up to 2.00% titanium, zirconium and/or niobium, balance essentially iron. The sum of carbon plus nitrogen is in excess of 0.0275%. Titanium, zirconium and niobium are in accordance with the following equation: %Ti/6+%Zr/7+%Nb/8/=(%C+%N)
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