Alloy 20 is an austenitic stainless steel designed to with stand a variety of environments such as sulfuric acid.  It is often found uses in the Petro-Chemical Industry, power generation, food processing, pharmaceutical and plastics industry.This grade has impressive resistance to “Chloride Stress cracking corrosion”.  It is often used in heat to make heat exchangers, pickling tanks, control valves, centrifugal pumps and pressure relive valves.