Kennametal Stellite's™ cobalt base alloys are available as cobalt rods, cobalt electrodes, cobalt wire and cobalt powder. Cobalt alloys are used primarily for wear applications, our cobalt alloys can be applied by any known fusion welding process or HVOF spraying proess and are particularly well-suited for hardfacing applications. Cobalt alloys are the most widely used wear resistant hardfacing materials available. Their unique combination of wear resistance, strength and corrosion resistance make them adaptable to many harsh environments. Cobalt alloys are selected for their excellent resistance to the widest combination of wear types including adhesive wear, abrasion, erosion, contact fatigue, thermal shock, cavitation wear, corrosion and oxidation. The degree to which the cobalt alloys retain these properties assures their unique position in the wear technology field.
The worlds most well known family of wear resistant alloys can be classified in to 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 frequently used Stellite cobalt alloys are:
For information on composition, physical properties, designations/specifications, thermal properties, and hardness data on our cobalt alloys, click here to view the alloy database.
- The Tribaloy family of cobalt alloys feature a hard inter-metallic Laves phase, dispersed in a tough matrix of eutectic or solid solution.
- They 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
For information on composition, physical properties, designations/specifications, thermal properties, and hardness data on our Tribaloy cobalt alloys, click here to view the alloy database.