Nitronic® is a trademarked family of more highly alloyed austenitic stainless steels. The name is so widely recognised that it is used generically to describe such alloys, even when produced by another manufacturer.
The most widely used are Nitronic 50 (Fermonic® 50, XM19, UNS S20910, 1.3964) and Nitronic 60 (Fermonic® 60, UNS S21800).
Nitronic 50 is a super austenitic stainless steel, offering improved strength and significantly better corrosion performance (PREN = 34) than regular 3xx series grades. It is most widely used for valve stems, thanks to its toughness at lower operating temperatures, and across a wide range of marine and boat hardware for its ease of fabrication.
Nitronic 60 is specifically formulated for excellent galling and wear resistance and is used in applications such as connectors.
| Trade name | Langley grade | UNS | PREN |
|---|---|---|---|
| Nitronic 50 | Fermonic® 50 | S20910 | 34 |
| Nitronic 60 | Fermonic® 60 | S21800 | n/a |