SuperCrN_FlubetechPVD, SuperCrN coating based on Chromium Nitride

SuperCrN is a PVD coating based on CrN with supernitride structure and consequently it presents high hardness and low friction coefficient. This coating is specially indicated for cutting tools, gravers and dies that work with non-ferric materials and with aluminium and copper alloys. The surface preparation and coating steps have been carefully designed so as to guarantee, while maintaining the initial rugosity,  the requested adherence for cutting tools, and deformation and cutting dies. SuperCrN  is encouragely recommended for coining sheets at high temperatures since the oxidation temperature is superior to that of SuperTiN and TiN Form.  

Benefits of the coating SuperCrN

  • Wear and corrosion resistance.
  • Anti-adherent capacity against non-ferric alloys. It also avoids micro-solders in both temperature ranges: hot and cold.
  • Relationship hardness-tenacity superior to those of TiN and AlTiN-based compounds.
  • Similar value of hardness when compared to SuperTiN but better friction coefficient, greater resistance to corrosion and superior oxidation temperature.
  • Excellent superficial finish that minimizes the cutting efforts and also diminishes the friction inside the channels of chip evacuation.
  • Possibility of obtaining thicknesses superior to those of the TiN and AlTiN-based coatings, over stamping dies and in hot and cold temperature ranges.
  • Maintains elevated, adherence values in thicknesses greater than 10 μm due to the coating's internally low tensions.
  • The duplex treatment along with nitriding treatment allows to improve wear and friction of the nitriding tools.

Technical Characteristics

Hardness 22GPa (2300HV)
Friction Coefficient 0.3
Adherence Excellent
Thickness 2-3 µm, 8-10 µm
Colour Metallic grey
Obtaining Temperature 250ºC - 450ºC
Degradation Temperature (oxidation) 700ºC

Successful Applications

  • End mills, drill bits, thread inserts, reamers for non-ferric alloys.
  • Mechanizing aluminium alloys within the aeronautic sector.
  • Mechanization of copper, bronzes and brasses. Berilium-bronzes. 
  • Cutting dies of non-ferric alloys.
  • Stamping and rolling dies.
  • Normalized gravers and ejectors.