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Formula: WC 94/Co 6
Form: Ball/Sphere
Material: Tungsten Carbide/Cobalt
Commodity: Ceramics
Type: Precision Sphere
Sphericity: 0.625µm

Tungsten Carbide/Cobalt Balls

Tungsten Carbide Cobalt Balls combine the hardness and abrasion resistance of tungsten carbide with the toughness provided by cobalt as a metallic binder. This composition delivers exceptional durability under high load and impact conditions, making them vital in bearings, precision valves, and grinding media. Industries including mining, aerospace, and chemical processing use these balls in high-wear mechanical assemblies, check valves, and milling applications. Specific examples include precision bearing races for aerospace actuators, ball check valves for corrosive chemical flows, and grinding media for ultra-fine mineral processing. In research, they are used in tribological testing, high-precision calibration, and particle size reduction experiments. Their ability to maintain dimensional stability and resist deformation ensures consistent performance in both industrial and scientific environments.
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Tolerances

Ball/Sphere
Diameter Standard ±5%
Diameter Precision See Item

Material Properties for Ceramics

Mechanical Properties
Element Value
Poisson's ratio 0.21-0.22
Tensile modulus( GPa ) 600
Hardness - Vickers( kgf mm⁻² ) 1550
Tensile strength( MPa ) 1440
Thermal Properties
Element Value
Upper continuous use temperature( C ) 600-630
Specific heat( J K⁻¹ kg⁻¹ ) 200-480@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 60-80@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 4.6-5@20-1000°C
Physical Properties
Element Value
Density( gcm⁻³ ) 14.95
Pultrusions
Element Value
Compressive strength( MPa ) 5300-7000
Electrical Properties
Element Value
Volume resistivity( Ohmcm ) 2x10⁻⁶@25

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