PVD Hard Coating

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