Stellite 6

Stellite 6 is a widely used cobalt-chromium wear-resistant alloy known for its excellent wear resistance, corrosion resistance, and high-temperature performance. It retains relatively high hardness under elevated temperatures and severe friction, making it particularly suitable for valves, sealing components, and critical wear parts.

Appearance & Properties

Color: Silver-gray to bright silver-gray

Density: Approx. 8.4 g/cm³

Hardness: Typically approx. 36–45 HRC, depending on product form and condition

Wear Resistance: Excellent

Corrosion Resistance: Excellent

High-Temperature Performance: Excellent

Machinability: Difficult

Anti-Galling Performance: Excellent

Magnetism: Generally somewhat magnetic

Surface Finishes: Grinding, polishing, blasting, precision grinding, etc.

Typical Applications

Stellite 6 is widely used in oil and gas, energy, aerospace, chemical processing, marine, and high-temperature industrial equipment.

Typical parts include valve seats, valve components, bushings, sealing rings, pump components, wear plates, nozzles, and high-temperature wear-resistant CNC parts.

Advantages

• Excellent wear and anti-galling performance

• Retains relatively high hardness at elevated temperatures

• Good corrosion and oxidation resistance

• Suitable for high-friction and high-temperature environments

• Long service life for critical wear components

Limitations

• Very difficult to CNC machine

• High cutting-tool wear and relatively low machining efficiency

• High material and machining costs

• Toughness and machinability are more limited than conventional steels