pba is the premier brand of AISI 316L stainless steel, the hardest, most resistant and elastic steel. Stainless steel AISI 316L is an austenitic alloy. It is distinguished from others inoxidizable steels by the high percentage of molybdenum which gives it a special resistance to pitting corrosion and stress corrosion. In this kind of stainless steel the nickel’s presence is increased in order to guarantee stability. Furthermore, the “L” stands for low carbon, in fact its quantity is less or equal to 0,03%.