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Low Temperature S-Phase Nitriding

When austenite is saturated with a significant amount of nitrogen or carbon, which expands its lattice, the S-layer forms.


The Low Temperature / S-Phase Nitriding Process

Since plasma is very effective in removing the passive layer of a chromium oxide formed naturally on the surface of stainless steel, UltraGlow® Ion (Plasma) Nitriding is widely used to harden (especially selective harden) stainless steel parts. Specifically, a very well-developed process that can be carried out by either carburizing or nitriding; such processes produce a so-called “S-phase".

304 Stainless Steel after UltraGlow® Ion (Plasma) Nitriding:

304 Stainless Steel

Download our White Paper:
"Retaining Corrosion Resistance in Stainless Steels with S-Phase Nitriding"

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