Cobalt Thermal Spray Powders

Astro Alloys offers Kennametal Stellite cobalt thermal spray powders & coatings, which are highly effective for hard-facing applications. Cobalt-based alloys hold a reputation for providing a strong defense against wear and corrosion.  Whether it be adhesive wear, abrasion, erosion, contact fatigue, thermal shock, cavitation wear, corrosion, or oxidation, these alloys stand strong and resist. Browse our selection of thermal spray cobalt coatings today.


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Cobalt Alloy Groups:

Cobalt alloys from Kennametal Stellite™ are classified into three major groups:

  • Traditional Co-Cr-W-C Alloys
  • Mo-Ni-Fe modifications of the traditional group
  • B-Si modifications

These cobalt alloys exhibit excellent wear, galling, corrosion and erosion resistance. At high temperatures, they retain these properties, while showing a high degree of hardness.

The most commonly used Stellite cobalt alloys are:


Tribaloy Alloys  

The Tribaloy family of cobalt alloys feature a hard inter-metallic Laves phase, dispersed in a tough matrix of eutectic or solid solution. 

These alloys exhibit outstanding resistance to high-temperature wear, galling, and corrosion and are particularly suitable for use where lubrication is a problem.

The most frequently used Cobalt-based Tribaloy alloys are:

  • Tribaloy T-400
  • Tribaloy T-400 C
  • Tribaloy T-800
  • Tribaloy T-900