Alloy 20 is one of the "Super" stainless steels that was designed for maximum resistance to acid attack. It's nickel, chromium, molybdenum and copper content contribute to its overall resistance to chlorideon stress corrosion cracking and general pitting attack. The alloy is stabilized with columbium to minimize carbide precipitation during welding. It has good mechanical properties and can be fabricated with comparative ease.
Although the alloy was designed for use in sulphuric acid related industries, it finds wide usage throughout the chemical processing industry. It also is used for processing pharmaceuticals, food, gasoline, solvents, plastics, explosives, synthetic fibers and many other products.
It has superior resistance to stress-corrosioncracking in boiling 20 to 40% sulphuric acid. It has excellent general corrosion resistance tosulphuric acid. Also it has excellent resistance to chloride stresscorrosion cracking.Alloy 20 equipment are mainly used in food and dye production, sulphuric acid application etc.
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