Alloy 20 is a austenitic nickel-iron-chromium alloy developed for maximum resistance against acid attack, specially sulfuric acid. It offers excellent resistance to pitting, crevice corrosion and general corrosion in chemicals containing chlorides and sulfuric, nitric , phosphoric and acids.For stabilization against sensitization and resultant intergranular corrosion Alloy 20 contains niobium. With relatively easy fabrication and elevated mechanical properties Alloy 20 also provides excellent corrosion resistance.
