Stainless Steel Nitronic 50 ^®Nitronic 50 ^® is a nitrogen-strengthened stainless steel that provides very good resistance to corrosion. Nitronic 50 ^® has an excellent combination of strength, ductility and toughness even at cryogenic temperatures. Nitronic 50 ^® has been used in applications such as pumps and fittings for chemical equipment, fasteners, cables, chains, screens and marine hardware. Available forms are tube, bar, sheet and plate.