Cobalt Alloys

UNS Number R30006

Stellite 6 is the most widely used of the wear resistant cobalt-based alloys and exhibits good all-round performance. It is regarded as the industry standard for general-purpose wear resistance applications, has excellent resistance to many forms of mechanical and chemical degradation over a wide temperature range, and retains a reasonable level of hardness up to 500°C (930°F). It also has good resistance to impact and cavitation erosion. Stellite 6 is ideally suited to a variety of hardfacing processes and can be turned with carbide tooling. Examples include valve seats and gates, pump shafts and bearings, erosion shields, and rolling couples. It is often used self-mated.

Available Forms of Stellite 6 at Bhawal Steels:

• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Castings
• Wire


Characteristics of Stellite 6:

• Exceptional resistant to wear, galling and corrosion
• High Hardness

 

 

Stellite 6 Chemical Composition, %:

Co

Cr

W

C

Ni

Fe

Si

Mn

Balance

27.0-32.0

4.0-6.0

0.9-1.4

3.0

3.0

1.5

1.0

 

Application of Stellite 6:

• Oil, Gas and Mining Industries
• Chemical Refineries, Power and Petrochemical Industry
• Pulp and Paper Industry
• Food Processing Industry
• Wood and Timber Industry
• Automotive Industry
• Aerospace Industry
• Medical Implants, Ancillary and Instrumentation

 

 

Mechanical Properties of Stellite 6:
At Room Temperature, Investment Castings As Cast

Ultimate Tensile Strength

790 Mpa

Yield

(0.2 % offset)
660 Mpa

Elongation

< 1 %

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