Chromium Carbide Nickel Powder [-270+400]

Material Chemistry and Coating Properties

The powder is a composite of hard chromium carbide (Cr₃C₂) particles embedded in a nickel-chromium (NiCr) alloy binder. This combination delivers a coating with high macro-hardness and excellent resistance to sliding wear and particle erosion at temperatures up to 850°C (1560°F). The NiCr matrix provides the necessary toughness and protects against oxidation and hot corrosion, making the coating suitable for demanding environments in power generation, petrochemical, and steel industries.

Particle Size and Process Compatibility

The -270+400 mesh designation indicates a controlled particle size distribution, typically ranging from 53 µm to 38 µm. This fine cut is optimized for HVOF spraying, where it melts uniformly in the high-velocity gas stream to produce coatings with low porosity, high bond strength, and a smooth as-sprayed surface finish. It can also be used in select plasma and flame spray setups, depending on the specific equipment and application requirements. Consistent particle morphology ensures stable powder feeding and a predictable spray pattern.

Industrial Applications

This powder grade is widely used to protect components that operate under severe wear conditions. Common applications include:

• Boiler Tubes and Waterwalls: Protection against high-temperature erosion and corrosion in coal-fired and biomass boilers.
• Fan Blades and Impellers: Extending service life in induced draft (ID) and forced draft (FD) fans handling abrasive particulates.
• Pump Housings and Sleeves: Reducing wear from slurry and cavitation in industrial pumps.
• Gate Valves and Seats: Providing a hard, corrosion-resistant surface for metal-seated valves in petrochemical service.

Selection and Handling Guidance

Selecting the correct powder grade is critical for coating performance. The -270+400 mesh cut is a standard choice for general-purpose wear protection where a balance of density and surface finish is required. For applications requiring thicker coatings or higher deposition rates, a coarser cut may be more suitable. Always confirm compatibility with your specific spray equipment and process parameters. Store the powder in its original, sealed container in a cool, dry environment to prevent moisture absorption, which can cause feeding issues and coating porosity.

About SPA2Z — Your Source for Chromium Carbide Nickel Powder

SPA2Z supports industrial surface preparation and coating professionals by supplying thermal spray powders that meet practical application needs. We understand that coating performance starts with consistent feedstock, and we focus on providing clearly specified materials like this Chromium Carbide Nickel Powder [-270+400] grade.

Whether you are evaluating a new coating specification, troubleshooting a wear problem, or sourcing a reliable supply for your thermal spray shop, our team can assist with grade selection, pack size options, and process compatibility. We offer flexible pack sizes to suit both trial runs and full-scale production, and we respond to quotation requests with the technical details you need to make an informed decision.