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Ultrafine tungsten powder · High-purity micron-sized tungsten powder
2.0–2.4 μm / 0.8–1.0 μm · Ultra-high density · Ultra-high thermal stability Tungsten carbide raw material / for electronics / for refractory materials
Core Advantages of Ultra-Fine Tungsten Powder
Ultra-high density · High melting point
Density: 19.35 g/cm³; melting point: 3,410°C; boiling point: 5,660°C; exhibits excellent high-temperature strength and creep resistance.
High purity · Extremely low impurities
Complies with GB/T 3458-2006: Fe ≤ 0.005%, Al ≤ 0.001%, Mo ≤ 0.005%, C ≤ 0.005%; overall purity ≥ 99.95%.
Ultrafine particle size · High activity
We primarily offer products with particle sizes of 2.0–2.4 μm and 0.8–1.0 μm, featuring a narrow particle-size distribution and high sintering activity, making them well suited for tungsten carbide production and powder metallurgy.
Corrosion-resistant · High stability
Resistant to acids, alkalis, and high-temperature oxidation; remains stable during long-term storage; suitable for extreme environments such as electronics, refractory materials, and high-temperature coatings.
Product Real-World Photos & Microscopic Morphology
2.0–2.4 μm Tungsten Powder SEM
Uniform particle size and excellent dispersibility.
Real-life photos of the powder
Dark gray ultrafine powder, packaged in vacuum aluminum foil bags or iron drums.
Tungsten Carbide/Electronic Components
Carbide cutting tools, electron tube cathodes, high-temperature coatings
Ultrafine Tungsten Powder: High-Purity, Micron-Scale Refractory Metal Powder
Tungsten boasts the highest melting point (3,410°C), extremely high density (19.35 g/cm³), outstanding high‑temperature strength, and excellent corrosion resistance, making it a core raw material for cemented carbides, electronic components, high‑temperature alloys, and specialty coatings. TIJO’s ultrafine tungsten powder is produced using a multi‑stage reduction process combined with precision classification, achieving a tungsten content of ≥99.95% (with total impurities ≤0.05%). The product is offered primarily in particle sizes of 2.0–2.4 μm and 0.8–1.0 μm, featuring a narrow particle size distribution, a large specific surface area, and high sintering activity. The product fully complies with the national standard GB/T 3458‑2006, with trace impurities such as Fe, Al, Si, Mg, Mn, Ni, As, Pb, Bi, Sn, Sb, Cu, Ca, Mo, K+Na, P, and C all maintained at exceptionally low levels. It is widely used in the production of tungsten carbide powders (for cemented carbide cutting tools and mining equipment), large tungsten billets and rods, tungsten‑rhenium thermocouple wires, as well as in the electronics industry for diode and vacuum tube cathodes and anodes, refractory material additives, and high‑temperature protective coatings. Customization is available to meet specific customer requirements.
Chemical Composition (wt%, GB/T 3458-2006)
| Element | W (%) | Impurity content (wt%, not exceeding) |
|---|---|---|
| Standard | Bal. ≥99.95 | — |
| Fe | — | 0.0050 |
| Al | — | 0.0010 |
| Yes | — | 0.0020 |
| Magnesium | — | 0.0010 |
| Mn | — | 0.0010 |
| Ni | — | 0.0030 |
| As | — | 0.0015 |
| Pb | — | 0.0001 |
| Bi | — | 0.0001 |
| Sn | — | 0.0003 |
| Sb | — | 0.0010 |
| Cu | — | 0.0007 |
| This | — | 0.0020 |
| Mo | — | 0.0050 |
| K+Na | — | 0.0030 |
| P | — | 0.0010 |
| C | — | 0.0050 |
Key Particle Size Specifications & Physical Properties
| Particle size specification | D10 (μm) | D50 (μm) | D90 (μm) | Loose packing density (g/cm³) | Tap density (g/cm³) | Specific surface area (m²/g) | Recommended Apps |
|---|---|---|---|---|---|---|---|
| ★ 0.8–1.0 μm | 0.5-0.7 | 0.8-1.0 | 1.2-1.6 | ≥0.8 | ≥1.8 | ≥2.5 | Ultrafine tungsten carbide raw material, tungsten–rhenium thermocouples, electron cathodes |
| ★ 2.0–2.4 μm | 1.2-1.6 | 2.0-2.4 | 3.0-3.8 | ≥1.2 | ≥2.5 | ≥1.2 | Tungsten carbide powder raw material, large slabs, and machining materials |
* Particle size can be customized to meet customer requirements.
| Parameter item | Numerical value | Note |
|---|---|---|
| CAS Registry Number | 7440-33-7 | — |
| Density (theoretical) | 19.35 g/cm³ | The density of the sintered part can reach 18.5–19.0 g/cm³. |
| Melting point | 3410℃ | The highest among refractory metals, suitable for ultra-high-temperature environments. |
| Boiling point | 5660℃ | Extremely high boiling point |
| Thermal conductivity (20°C) | 173 W/(m·K) | Good thermal conductivity |
Typical application areas
Tungsten carbide raw material
Carbide cutting tools, mining tools, wear-resistant parts, oil drill bits
Processing Material/Slab
Large tungsten slabs, tungsten rods, tungsten crucibles, and tungsten electrodes
Electronics industry
Diodes, vacuum tubes, cathode materials, electron emitters
Refractory materials
High-temperature furnace linings, refractory additives, radiation-shielding coatings
High-temperature coating
Aircraft engine, rocket nozzle, and marine gas turbine protective coatings
Tungsten–rhenium thermocouple
Ultra-high temperature measurement, heat treatment furnace sensors
Ultrafine Tungsten Powder vs. Conventional Tungsten Powder
| Performance Dimension | Ultrafine tungsten powder (2.0–2.4 μm) | Conventional tungsten powder (5–10 μm) |
|---|---|---|
| Sintering activity | ✓ High- and low-temperature sintering densification | Lower |
| Tungsten carbide grain size | Nano-/ultrafine tungsten carbide can be prepared. | Coarse-grained tungsten carbide |
| Molding performance | The green compact exhibits high strength, and sintering shrinkage is uniform. | General |
| Specific surface area | Large, with high reactivity | small |
Ultrafine tungsten powder is an ideal raw material for producing high-performance tungsten carbide and precision tungsten products, significantly enhancing the hardness and toughness of cemented carbides.
Process Recommendations and Parameters
| Craftsmanship | Recommended particle size | Key parameters | Product Performance |
|---|---|---|---|
| Preparation of Tungsten Carbide | 2.0–2.4 μm | Carbonization temperature: 1400–1600°C; carbon-to‑material ratio: 6.1–6.2% | WC grain size 0.5–0.8 μm |
| Powder metallurgy pressing + sintering | 2.0–2.4 μm | Pressing pressure: 200–300 MPa; sintering at 2300–2500°C under hydrogen atmosphere. | Density ≥ 18.5 g/cm³ |
| Metal Injection Molding (MIM) | 0.8–1.0 μm | Feeding load: 90–92%; degreasing followed by sintering at 1550°C. | Complex miniature tungsten components |
End-to-end testing capability
Each batch of ultrafine tungsten powder is tested for tungsten content, trace impurity elements, particle size distribution, oxygen content, tapped and loose bulk densities, and specific surface area, with a Certificate of Analysis (COA) provided.
Packaging & Delivery
Powder packaging
Double-layer aluminum foil bag, vacuum-sealed + iron drum/carton
Specifications: 1 kg, 5 kg, 10 kg, 25 kg
Delivery time
In-stock items will be shipped within 3–7 days after order confirmation.
Custom particle size or higher purity: 7–15 days
Batch Traceability
Sample retained for each batch; COA report shipped with the goods.
Quality documents are available.
Free sample
Samples are provided for tungsten carbide preparation, powder metallurgy, and electronic material validation.
Customized Services
Grain size customization
Technical Support
Assist customers in resolving issues.
Inquire Now for Free Samples
Fill out the form on the right or contact us directly; we will provide product samples, technical data sheets, and price quotes to help you quickly complete your additive manufacturing process validation.
Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
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Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
