NITRONIC ® 50 / UNS S20910 / XM-19 is manganese alloyed austenitic stainless steel with improved corrosion resistance compared to 316L and 317L due to increased chromium content plus about twice the yield strength of the same at room temperature. Unlike many austenitic alloys,
UNS S20910 / XM-19 / NITRONIC® 50 does not become magnetic when cold formed and has very good mechanical properties at both elevated and sub-zero temperatures.
The combination of corrosion resistance and mechanical strength is utilized in marine hardware, pump shafting, petrochemical, pulp & paper, food processing and petroleum industries. Can also be used in “down hole” applications due to sulfide stress cracking resistance.
Field service experience have shown that UNS S20910 / XM-19 / NITRONIC® 50 stainless has excellent resistance to sulfide stress cracking in air conditions. NITRONIC® 50 in both the annealed and high-strength (hot rolled) conditions has been included in NACE Standard MR01-75/ ISO 15156-3 “Sulfide Stress Cracking Resistant Metallic Material for Oil Field Equipment,” at hardness levels up to HRc 35 maximum.
