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Guangzhou Zhongli Technology Co., Ltd
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Product Description
1. Mechanical & Physical Properties
| Property | Tungsten Carbide (WC-6%Co) | Alumina (99%) | Zirconia (YTZP) | Steel (440C) |
|---|---|---|---|---|
| Density (g/cm³) | 14.6–15.0 | 3.9 | 6.0 | 7.8 |
| Hardness (HRA) | 90–92 | 80–85 | 88–90 | 60–65 |
| Fracture Toughness (MPa·m½) | 10–12 | 4–5 | 7–10 | 15–20 |
| Compressive Strength (GPa) | 4.5–6.0 | 2.5 | 2.0 | 2.0 |
| Elastic Modulus (GPa) | 550–650 | 380 | 200 | 200 |
Key Takeaways:
2× Harder than alumina, 3× harder than steel – Minimal wear in abrasive environments.
Highest density – Delivers superior kinetic energy for efficient grinding.
Exceptional compressive strength – Withstands high-load milling.
| Media Type | Relative Wear Rate | Lifespan (vs. Steel) | Cost Efficiency |
|---|---|---|---|
| Tungsten Carbide | 1× (Benchmark) | 20–50× longer | Best long-term |
| Zirconia | 1.5–2× | 10–15× longer | High upfront |
| Alumina | 3–5× | 5–8× longer | Moderate |
| Steel | 50–100× | Baseline | Low initial cost |
Real-World Example:
In cement ball mills, WC media lasts 2+ years vs. steel’s 1–2 months.
| Property | Tungsten Carbide | Performance Impact |
|---|---|---|
| Corrosion Resistance | Good (pH 4–12) | Cobalt-bound grades sensitive to acids; nickel-bound resists pH 1–14. |
| Oxidation Resistance | Stable to 500°C | Avoid >600°C (cobalt binder oxidizes). |
| Thermal Shock | Moderate | Avoid rapid quenching (>150°C/min). |
Best For:
Wet grinding of abrasive slurries (e.g., mining ores).
Organic solvents (no chemical reaction).
Particle Size Reduction: Achieves nanoscale fineness (D90 < 100nm) in high-energy mills.
Throughput: 30–50% faster than alumina/zirconia due to higher density.
Contamination Risk: Near-zero (critical for battery materials, electronics).
Optimal Applications:
Mining: Ore pulverization (gold, copper).
Ceramics: Nano-powder production.
Paints/Inks: Color-intensive grinding.
| Industry | Benefit of WC Grinding Media |
|---|---|
| Mining | 50× lifespan vs. steel in gold ore processing. |
| Aerospace | No Fe/Ni contamination in Ti alloy powders. |
| Electronics | Ultra-pure grinding for semiconductor materials. |
| Oil & Gas | Drilling mud additives with minimal wear. |
✅ Unmatched Hardness – Lowest wear rate in extreme abrasion.
✅ High Density – Faster grinding with less energy.
✅ Chemical Stability – Resists most solvents/slurries.
✅ Longest Lifespan – ROI justified in 6–12 months.
YG8 polishing WC balls
Exhibition & Partner
Case
Ship to Poland
Ship to France
FAQ
Tungsten carbide grinding media consists of WC (tungsten carbide) particles bonded with cobalt (Co) or nickel (Ni). It is the hardest and most wear-resistant grinding material available, ideal for abrasive and high-impact milling.
Hardness (HRA 90+): 3× harder than steel, 2× harder than alumina.
Density (14–15 g/cm³): Higher kinetic energy for faster grinding.
Wear Resistance: Lasts 20–50× longer than steel in abrasive slurries.
Contamination-Free: No iron/nickel leaching (critical for batteries, electronics).
Cobalt-Bonded (WC-Co): 6%, 8%, 10% Co (standard for toughness).
Nickel-Bonded (WC-Ni): Better corrosion resistance (pH 1–14).
Ultra-Fine Grain: Sub-micron WC for nano-grinding.