Profile: Alloy Metals and Tubes International specializes in offering high-strength, custom mechanical tubes in Nitronic 50® (UNS20910 (Nitronic 50 / XM19), seamless, ASTM A511, chemistry per ASTM A 269, annealed condition), in sizes up to 3.5" OD and wall thickness up to 0.325". These tubes can reach demanding mechanical properties, with yields in the 140,000 to 170,000 range. 254 SMO® (UNS S31254 ) is an austenitic stainless steel, compatible with the common austenitic stainless steels, designed with high levels of chromium, molybdenum, and nitrogen for maximum resistance to pitting & crevice corrosion. 254 SMO® is substantially stronger than the common austenitic grades, but is also characterized by high ductility and impact strength. Often referred to as a 6% moly grade due to the molybdenum content, 254 SMO® tubing has the ability to withstand high temperatures and maintain strength under volatile conditions. Commonly used as a replacement in critical components of larger constructions where type 316L or 317L has failed by pitting or chloride stress corrosion cracking, 254 SMO® tubing withstands the same corrosive environments. In new construction, 254 SMO® has been found in many cases to be a technically adequate and more cost efficient substitute for other nickel based alloys & titanium. We stock and supply 254 SMO® tubing to meet the diverse needs of customers in varied markets & applications.