Chromium Nitride (CrN)

Specifications

Surface Micro-Hardness2,000 Vickers (85 Rc)
Thermal StabilityUp to 1,300°F
Coefficient of Thermal Expansion9.4 ppm/°C (9.4 microinches/inch/°C)
Thermal Conductivity0.046 calories/second-cm-°C
Density5.22 grams/cm3
Crystalline StructureFace centered cubic
Modulus of Elasticity600 gigapascals
Coating ThicknessTypically 5 microns (between 2 to 6 microns)
Deposition TemperatureBetween 200°C to 400°C
Electrical Resistivity25 micro-Ohm-cm

The most common materials successfully coated with CrN are the tool steels, stainless steel, mild steel, titanium alloys, carbides, Inconel, Hastelloy, the copper alloys and the aluminum alloys.

Uniformity

Coating conforms uniformly to the substrate. No buildup occurs on corners (unlike hard chrome plating operations). Coating "throws" well into features. In deep holes, coating tapers off from 1 to 7 diameters of depth.

This coating is designed to replace hard chromium (hard chrome) with its superior resistance to adhesive wear, chemical corrosion, and oxidation. Its low coefficient of friction makes it ideal for die cast, molding components applications that require reduction of, galling during process.
Chromium Nitride is the preferred application for sticking & picking problems from tooling manufactures around the world. Please consult us for the best application for sticking issues.