Stellite-Type Cobalt Alloy Powder [-140+325]

Understanding Stellite-Type Cobalt Alloy Powder

Stellite-type alloys are cobalt-chromium-tungsten systems known for their exceptional resistance to wear, galling, and corrosion at elevated temperatures. In powder form, these alloys are applied via thermal spray to create protective overlays on components such as valve seats, pump sleeves, bearing journals, and turbine parts. The -140+325 mesh cut is a common specification for HVOF and plasma spray, balancing deposit efficiency with coating density.

Key performance attributes of a well-manufactured cobalt alloy powder include low oxide content, controlled carbon levels, and a spherical particle shape. These factors directly influence coating hardness, porosity, and bond strength. SPA2Z sources this powder grade to meet the practical demands of industrial coating shops and maintenance teams.

Selection and Process Compatibility

Choosing the right powder cut is critical. The -140+325 mesh range is optimized for high-velocity processes where fine particle melting and high impact velocity produce low-porosity coatings. For plasma spray, this size range offers good flowability through standard powder feeders. If your application requires a different mesh fraction—such as -325+15µm for finer finishes or -45+15µm for specific plasma guns—SPA2Z can advise on availability and suitability.

Always verify that the powder's melting range and coefficient of thermal expansion are compatible with your substrate material. Pre-heat and post-coat treatments should follow the powder manufacturer's technical data sheet, which SPA2Z can provide upon request.

About SPA2Z — Your Source for Stellite-Type Cobalt Alloy Powder

SPA2Z supplies industrial-grade thermal spray powders to coating workshops, maintenance teams, and component rebuilders. For this Stellite-type cobalt alloy powder, we focus on providing a consistent product with clear documentation—helping you make informed decisions about chemistry, particle size, and process fit.

When you enquire with SPA2Z, you gain access to:

• Lot-specific information: Request a certificate of analysis covering particle size distribution and key alloying elements.
• Pack flexibility: Standard pack options include 5 kg tins, 10 kg tins, and 25 kg pails, with other sizes available on request.
• Application support: Discuss your coating challenge—whether it's high-temperature wear, corrosion, or galling—and we'll help confirm if this powder grade aligns with your process.

Contact SPA2Z today to request a powder grade quote, discuss bulk supply, or confirm technical specifications for your next coating project.