Type 316 steel is an austenitic chromium-nickel stainless steel which contains 2 to 3 % molybdenum. The molybdenum content increases corrosion resistance, enhances resistance to pitting in chloride ion solutions and augments strength at high temperatures. It is particularly effective in acidic environments and in defensive against corrosion caused by the sulfuric, hydrochloric, acetic, formic and tartaric acids and as well as acid