PVD hard coating is one of the best methods for optimising the hardness to residual compressive stress ratio. It uses a similar vacuum deposition coating method as the standard PVD coating that coats the product with a film of hard refractory material 2-7 microns thick. The differences between PVD hard coating and the standard PVD coating are:

  • The materials enclosed in the vacuum chamber are heated to a maximum temperature of 500 celcius
  • The duration of the coating time is longer
  • 10x hardness

Titanium Nitride (TiN)

Types of Coating : Titanium Nitride (TiN)
Hardness (HV) : 2000 – 2750
Thickness (µm) : 2 – 5
Colour : Gold
Coating Temperature (°C) : ~350