MCrAlY Powder [-200+400]

Understanding MCrAlY Powder for Thermal Spray

MCrAlY refers to a family of metallic coating alloys where M stands for a base metal such as Nickel (Ni), Cobalt (Co), or a combination of both (NiCo). The Cr provides hot corrosion resistance, Al forms a protective alumina scale for oxidation resistance, and Y (Yttrium) improves oxide scale adherence. These coatings are widely used as bond coats in thermal barrier coating (TBC) systems and as standalone overlay coatings in gas turbine, aerospace, and power generation industries.

The -200+400 mesh designation indicates a controlled particle size distribution, where powder passes through a 200-mesh screen (74 microns) but is retained on a 400-mesh screen (37 microns). This tight cut is critical for consistent powder feeding, stable spray parameters, and achieving the desired coating microstructure.

Typical Application Methods

This powder grade is compatible with several thermal spray processes. The choice of process depends on the component geometry, required coating properties, and field or shop application.

• HVOF (High Velocity Oxygen Fuel): Produces very dense, low-oxide coatings with high bond strength. Preferred for critical rotating parts and wear-corrosion environments.
• Plasma Spray: Offers flexibility for a wide range of part sizes and materials. Commonly used for bond coats in TBC systems on combustion hardware.
• Flame Spray: A more portable and economical option suitable for on-site repairs and less demanding applications where moderate density is acceptable.

Key Selection Considerations

When evaluating MCrAlY powder for your coating operation, consider the following points to ensure compatibility and performance:

• Chemistry match: The specific Ni/Co ratio and minor alloying additions (such as Ta, Si, Hf) must match the original equipment manufacturer (OEM) specification or your in-house coating standard. We supply to your required grade.
• Particle size verification: Confirm that the -200+400 mesh cut suits your powder feeder, nozzle, and spray parameters. Tighter or shifted cuts may be available on request.
• Morphology: Gas-atomized spherical powders generally offer better flowability and higher deposition efficiency compared to irregular morphologies. We can confirm morphology for the offered lot.
• Pack size and handling: Standard packs are 5 kg, 10 kg, and 25 kg. Select a size that balances shelf life, moisture protection, and your consumption rate.
• Application environment: Define the service temperature, corrosive media, and thermal cycling conditions so we can help verify the appropriate MCrAlY composition.

About SPA2Z — Your Source for MCrAlY Powder [-200+400]

SPA2Z supports industrial coating operations by supplying thermal spray powders that meet practical shop-floor requirements. When you enquire about MCrAlY powder, we focus on understanding your spray process, component base material, and service conditions to offer a grade that aligns with your coating specification.

We offer standard pack sizes suitable for both trial batches and regular production consumption. Every enquiry is handled with attention to lot-specific details such as chemistry, morphology, and mesh distribution so you can make an informed procurement decision. Whether you are coating gas turbine parts, repairing industrial components, or developing a new coating line, we are here to support your material supply.

• Grade-specific quotation based on your required chemistry
• Standard pack options: 5 kg tin, 10 kg tin, 25 kg pail
• Practical support for process compatibility and selection