2.8mm Tungsten Heavy Alloy Ball Precision Sphere with High Density and Precision Ground Surface

The Ø2.8mm tungsten alloy ball represents a benchmark in precision spherical components—small enough to fit into compact assemblies yet dense enough to provide meaningful mass where space is constrained. Tungsten heavy alloys offer densities of 16.5-18.5 g/cm³, approximately 1.5-1.6 times that of lead, making them the material of choice for applications that demand maximum weight in minimal volume, without the toxicity and mechanical limitations of lead alternatives.

Available in two primary alloy systems—WNiFe (tungsten-nickel-iron) and WNiCu (tungsten-nickel-copper)—our 2.8mm tungsten heavy alloy balls are precision-engineered to meet the most exacting requirements across aerospace, medical imaging, defense, precision instrumentation, and high-performance automotive sectors.

The 2.8mm tungsten alloy ball is available with precision-ground surfaces and tight geometric tolerances to ensure consistent fit and function in critical assemblies.

Tungsten heavy alloys are produced by blending tungsten powder (90-97% by weight) with matrix-forming metals (nickel, iron, or copper) followed by liquid-phase sintering. This process yields a two-phase microstructure: nearly pure tungsten grains embedded in a ductile binder matrix, achieving near-theoretical density.

• Choose WNiFe for general counterweight applications, aerospace ballasting, dynamic balancing, and mechanical damping where magnetic properties are not a concern.
• Choose WNiCu for medical collimators, MRI-adjacent equipment, electron beam systems, cleanrooms, and applications demanding zero magnetic interference.

• Helicopter / Aircraft Rotor Blade Balancing: Tungsten alloy balls are strategically placed to correct static and dynamic imbalances in critical rotating assemblies.
• Guidance System Ballasting: Inertial navigation platforms and flight control actuators require precisely calibrated masses.
• Ammunition / Shot Components: High-density ballast for defense and hunting applications.
• Drone / UAV Payload Ballasting: Miniature aircraft require compact, dense counterweights for proper center of gravity.

• Multi-Leaf Collimator (MLC) Filling: Forms focusing aperture arrays that shape therapeutic radiation beams.
• Collimator Ball Arrays: Non-magnetic nature ensures no imaging artifacts in strong magnetic fields.
• Targeted Focal Beams: Enables radical irradiation on tumors in sensitive locations without serious complications.

• Balance Standard Masses: Serves as built-in calibration weights in high-precision analytical microbalances.
• Force Sensor Components: Provides pure gravitational loads, eliminating eccentricity errors.
• Torque Wrench Calibration Devices: Delivers repeatable, traceable calibration results.

• High Density in Compact Size: 16.5-18.5 g/cm³ provides maximum mass in minimal volume.
• Exceptional Wear Resistance: Outperforms lead, steel, and many other materials.
• Lead-Free & RoHS-Compliant: Environmentally responsible alternative to toxic lead weights.
• Non-Magnetic Option (WNiCu): Permeability < 1.002 ensures zero magnetic field distortion.
• Superior Dimensional Stability: Maintains geometric precision under temperature variation and mechanical load.
• Corrosion Resistance: Excellent protection against moisture, chemicals, and humid environments.
• Long Service Life: Maintains precise dimensions over millions of operating cycles.
• Full Traceability: Comprehensive documentation available for regulated industries.