voestalpine eifeler Coatings North America

CrN/CrCN

Chromium Nitride (CrN) & CrCN PVD Coating

CrN / CrCN – chrome nitride / chrome carbon-nitride – For a high level of adhesion

The chrome-nitride (CrN) coating is characterized by the following properties:

  • High hardness and adhesion
  • Very good chemical resistance
  • High temperature resistance in air
  • Thicker layers possible
  • Low coefficient of friction against steel
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Applications

  • Machining
    Milling, turning, grinding and cutting-tools for the processing of non-ferrous metals, particularly Ti and Cu alloys
  • Shaping
    Drawing, stamping, pressing and deformation tools for the processing of non-ferrous metals, especially Ti and Cu alloys
  • Aluminum die casting
    (Duplex) coating of cores and form-giving active segments for the reduction of wear
  • Plastic molding
    Tools which are subject to corrosive and abrasive wear, e.g. through aggressive and hard filling materials

Application Areas

Metal Forming

Plastic Molding

Special features:

The relatively high hardness, in combination with a low level of brittleness allows the coating of thicker layers with good adhesion. This means an additional wear reserve for many applications. In areas where corrosion resistance is also required, as well as abrasion resistance, the CrN coating represents the ideal solution.

Deposition technology:

The application of the CrN layers is implemented by means of PVD technology. This allows the deposition of the layer on tool steels, HSS, cemented carbides or many other materials with temperatures up to 450° C.

  • A low temperature version of this coating is also available for temperature sensitive tooling. Please contact your local representative for more information.

In numbers:

Material:Chrome nitride, chrome carbo-nitride, CrN, CrCN
Micro-hardness HV 0. 05:2000 ± 200, 2300 ± 200
Coefficient of friction against 100Cr6 steel: 0.3 – 0.4; 0.2 – 0.3
Layer thickness [µm] : 2 – 6 [1]
Maximum application temperature:600° C / 1100° F
Color:Silver-grey
General characteristic:Low stress levels, high level of adhesion, high corrosion resistance
Preferred applications:Machining of copper and other non-ferrous metal, metal forming, plastic molding (improved demolding), aluminum and magnesium die casting

[1] Dependent on tool size, also possible for micro-tools with less than 2 µm.

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