High Density Tungsten Alloy Balls
High-Density Tungsten Alloy Balls
Agescan is proud to be a CERTIFIED Tungsten Alloy products manufacturer since 2017.
High-density tungsten alloy balls (typically W–Ni–Fe or W–Ni–Cu) are high-performance spherical components with a tungsten matrix and Ni/Fe or Ni/Cu binder phases. Unlike cemented carbide (tungsten carbide) balls, their core advantages are ultra-high density, high ductility, and excellent mechanical stability, rather than extreme hardness.
I. Key Properties
- Ultra-high density: tungsten alloy's density is about 2.5× steel and 1.7× lead—delivering very high inertia and mass in minimal volume.
- Balanced mechanical performance: Hardness HRC 28–40 (up to HRC 45+ after heat treatment); compressive strength >1000 MPa; good plasticity and toughness; impact-resistant and less brittle than tungsten carbide balls.
- Excellent environmental stability: Low thermal expansion (4–6×10⁻⁶/°C); minimal dimensional change up to ~500 °C; moisture- and corrosion-resistant; non-magnetic (weak magnetism optional for some grades).
- High precision machinability: Precision grinding/polishing to G3–G5; sphericity ≤0.5 µm; surface roughness Ra ≤0.01 µm.
II. Applications
- High-end Industrial Equipment: CNC spindle bearings; high-pressure valve balls for oil and deep-sea systems.
- Medical & Precision Instruments: Radiation-shielding beads for radiotherapy; calibration masses for balances/sensors.
III. Manufacturing Process
A. Powder blending (W with Ni/Fe or Ni/Cu) via atomization or mechanical alloying.
B. Cold isostatic pressing (200–300 MPa) into spherical compacts.
C. Sintering at 1400–1500 °C in hydrogen or vacuum to >99.5% density.
D. Grinding and polishing to final size and precision.
E. Inspection (density, hardness, sphericity, surface roughness) and packing.
Please review below resources and laboratory test results on our TSS:
Our sizes are available as below for commercial orders:
