MCrAlY Powder [-325+400]

Why the -325+400 Mesh Cut Matters for Your Coating Process

Particle size distribution directly influences deposit efficiency, coating density, and surface finish. The -325+400 mesh range (approximately 38–44 µm) is a fine cut that melts readily in the thermal spray jet, producing smooth, low-porosity coatings. This makes it a practical choice for bond coats that must resist thermal cycling and oxidation, or for thin, precision overlays where a fine as-sprayed finish reduces post-grinding time.

When you specify this mesh cut, you are selecting a powder engineered for controlled melting and high deposit integrity. It is particularly effective in HVOF and plasma spray processes where particle dwell time is short and complete melting is critical.

Process Compatibility and Application Guidance

MCrAlY powders are used across multiple thermal spray processes. The -325+400 cut is compatible with:

• HVOF (High Velocity Oxygen Fuel): Produces very dense, well-bonded coatings with low oxide content. Preferred for bond coats in aerospace and industrial gas turbine hot sections.
• Plasma Spray (APS/VPS): Suitable for atmospheric plasma spray in air or vacuum plasma spray where controlled atmosphere reduces oxidation. Used for overlay coatings on blades, vanes, and combustor parts.
• Flame Spray: Can be applied with oxy-acetylene powder flame spray guns for less demanding applications or field repairs, though deposit density is typically lower than HVOF or plasma.

Process selection depends on your part geometry, base material, required coating thickness, and service conditions. Our team can discuss your application and help confirm whether this powder grade aligns with your spray equipment and performance targets.

Pack Options and Handling

SPA2Z supplies MCrAlY Powder [-325+400] in standard pack sizes that balance material protection with ease of handling in a coating shop environment:

• 5 kg tin
• 10 kg tin
• 25 kg pail

Packaging is selected to protect the powder from moisture and contamination during storage and transit. We recommend storing MCrAlY powders in a dry, temperature-stable environment and minimizing exposure to ambient humidity before spraying to maintain flowability and prevent agglomeration.

About SPA2Z — Your Source for MCrAlY Powder [-325+400]

SPA2Z supports thermal spray operators, coating job shops, and maintenance teams with a practical, enquiry-driven supply model for MCrAlY Powder [-325+400]. We understand that coating specifications vary — chemistry, particle size, and process parameters must align for a successful spray run. That is why we work on a quotation basis: you tell us your grade requirements, quantity, and application, and we provide a commercial offer tailored to that scope.

Whether you are qualifying a new bond coat for a turbine repair program or restocking a production-grade powder for ongoing HVOF work, we help you move from specification to supply without unnecessary complexity. Contact us with your target chemistry, mesh range, and pack preference to receive a quotation.