Stellite™ 6 Alloy Datasheet

Wrought Cobalt Alloy

Supplied by Kennametal Stellite

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Product Description
STELLITE™ COBALT-BASED ALLOYS
consist of complex carbides in an alloy matrix. They are resistant to wear, galling, and corrosion and retain these properties at high temperatures. Their exceptional wear resistance is due mainly to the unique inherent characteristics of the hard carbide phase dispersed in a CoCr alloy matrix.

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.
General  
Material Status 
  • Commercial: Active
Availability 
  • Asia Pacific
  • Europe
  • North America
Available Documents
Technical Datasheet (English)
Metals General
Nominal Value
Unit
 
Applicable Specifications
 
 
Forms Available
 
 
Metal Type
 
 
Alloy Identification
 
 
Metals Type Analysis
Nominal Value
Unit
 
Type Analysis
     
Carbon
%
 
Chromium
%
 
Cobalt
%
 
Tungsten
%
 
Metals Physical
Nominal Value
Unit
 
Density
lb/in³
 
Metals Mechanical
Nominal Value
Unit
 
Tensile Strength (Ultimate) 2 (73°F)
ksi
 
Tensile Strength (Yield), 0.2% 2 (73°F)
ksi
 
Tensile Elongation (Break) 2 (73°F)
%
 
Hardness
     
HRC-Scale
 
 
HV-Scale
 
 
Tensile Modulus 2 (73°F)
ksi
 
Metals Thermal
Nominal Value
Unit
 
Mean CTE (68 to 212°F)
in/in/°F
 
Thermal Conductivity (73°F)
Btu·in/hr/ft²/°F
 
Metals Electrical
Nominal Value
Unit
 
Electrical Resistivity (73°F)
ohms·cir·mil/ft
 
Notes
1Typical properties: these are not to be construed as specifications.
2Castings
 
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