Leo’s Engineering

CrN Chromium Nitride page

Surface Coatings | Bosch 1500

CrN Chromium Nitride page

Specifications:

Surface Micro-Hardness:                                   2,000 Vickers (equivalent to 85 Rc)

Thermal Stability:                                               up to 1,300ºF

Coefficient of Thermal Expansion:                 9.4 ppm/ºC  (9.4 microinches/inch/ºC)

Thermal Conductivity:                                       0.046 Calories/second-cm-ºC

Density:                                                                 5.22 grams/cm3

Crystalline Structure:                                          Face centered cubic

Modulus of Elasticity:                                        600 GigaPascals

Coating Thickness:                                             5 microns typical (range from 2 to 6 microns)

Deposition Temperature:                                   can range from 200ºC up to 400ºC

Electrical Resistivity:                                          25 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.

Has the appearance of metallic silver, but is an ultra-hard material
Is harder than hard chrome plating, off the Rockwell C scale.
Is highly inert – will not corrode and has excellent chemical resistance.
Is non-toxic—used for medical surgical devices and food processing equipment
Is dense and non-porous

CrN 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.