Nitronic
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Nitronic is the trade name for a collection of nitrogen-strengthened stainless steel alloys. They are austenitic stainless steels.
Nitronic alloys were developed by Armco Steel. The first of these alloys, Nitronic 40, was introduced in 1961.[1] Since 2022, the trademark has been owned by Cleveland-Cliffs Steel Corp., successor to AK Steel.[2] Electralloy is the licensed producer in North America for a wide range of Nitronic products.[3]
The Nitronic name is due to the addition of nitrogen to the alloy, which enhances the strength internally rather than being nitrided on the surface, as some steel are treated. The nitrogen is homogeneous throughout the material. Nitronic materials have about twice the yield strength of 304L and 316L.[4]