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The process of adding nitrogen and carbon to the surface of steel parts in the gaseous atmosphere of both dissociated ammonia and carrion gas with low carbon potential. This process is done mainly to provide an anti-wear resistance on surface layer and to improve fatigue resistance. Nitrocarburizing is a shallow case variation of the nitriding process. While it can be applied to the same materials as is nitriding, it can also be applied to unalloyed materials, where good wear resistance and some improved fatigue resistance are needed at a low cost. It is widely used for stampings, as an alternative to hard plating or even carbonitriding.
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