Black Nitride, or Ferritic Nitrocarburizing, is the thermochemical that simultaneously diffuses nitrogen and carbon into the surface of ferrous metals. During the process, a two-part surface layer is formed, an outer iron nitride layer with a nitrogen diffusion layer below it. Nitrogen and carbon are absorbed by and diffused into the surface of the metal. Reproducible and uniform layers with a predetermined thickness will be formed on all areas of the metal. This process results in markedly improved surface properties on ferrous metal parts while maintaining dimensional and shape stability. Black Nitride is commonly used as an alternative to high temperature conventional heat treatments such as carburizing and carbonitriding. Black nitride Benefits * Increased wear resistance * Improved fatigue strength * Better corrosion resistance * Improved lubricity * Enhanced cosmetic appeal * Better corrosion protection at equivalent or lower costs than hard chrome nickel plating **Black nitride is currently only available for slides and frame parts, we do not accept frames at this time** **Black nitride can only be performed on steel parts, aluminum cannot be black nitrided** **For black nitride only orders we require the entire slide to be disassembled prior to sending the slide to us. This includes removing all internal components from the slide and removing the iron sights from the slide.**