Plasma Nickel-Iron-Aluminum

A&A Coatings Nickel-Iron Aluminum Composite powder is specially designed to produce coatings which not only exhibit excellent self-bonding properties but also provide a significant improvement in machinability, wear and oxidation resistance.

The material undergoes an exothermic reaction during spraying and forms a strong metallurgical bond with the base metal. Coatings of Nickel-Iron-Aluminum relatively hard and can be machined using standard carbide tools to a very fine finish.

Additionally, these coatings are dense and can be used for oxidation resistant applications up to 815°C (1500°F). This makes Nickel-Iron-Aluminum a good undercoat for ceramic, nickel chromium and stainless steel type coatings in this environment.

Material Powder Characteristics

Typical Composition: Iron 52%
Nickel 38%
Aluminum 10%
Typical Size Range: -120 mesh +15 microns

Physical Properties of Coating

Texture, as sprayed, (microinches aa): 400 – 800
Finish, machined (microinches aa): 20 – 40
Macrohardness: Rb75-85
Cross-Sectional Hardness (DPH300): 250
Density (g/cc): 6.8
Coating Weight (lb/ft2/.001″): .035
Bonding (on low carbon steel, psi): 5,000

Thickness Limitation

There is no apparent thickness limitation. Nickel-Iron-Aluminum coatings can be applied thick without cracking, with minimum dependence on technique and temperature control.

Surface Preparation

A&A Coatings Plasma Sprayed Nickel-Iron-Aluminum can be applied to most substrates which have been cleaned to remove surface oxides. This cleaning is accomplished with a light grit blast. Additionally, a “Bond coat” is required in some cases. Please contact us for substrate specific requirements


A&A Coatings Plasma Sprayed Nickel-Iron-Aluminum coatings are best finished by machining. If you will be finishing our coating at your facility, please contact us for more information.

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