Other materials
3D Printing、MIM、HIP、Brazing、Spraying、Porous material、PM
Spherical Tungsten Powder · High-Purity Tungsten Powder
High sphericity · Low oxygen content
Core Advantages of Spherical Tungsten Powder
High sphericity · Excellent flowability
Plasma spheroidization process, with a sphericity of ≥95%, smooth particle surfaces, excellent flowability for 2.0–2.4 μm fine powder, and a Hall flow rate of ≤12 s/50 g for 15–53 μm powder.
Ultra-high melting point · High-temperature resistance
Melting point: 3,422°C; maintains excellent strength and creep resistance at elevated temperatures, making it suitable for extreme‑environment applications such as rocket nozzles and fusion‑energy components.
High Density · Shielding Performance
With a density of 19.3 g/cm³, it exhibits excellent radiation shielding properties and is used in medical radiation protection, the nuclear industry, and as a weighting material.
High Purity · Low Oxygen
Purity ≥ 99.9%, oxygen content ≤ 0.05%, excellent batch-to-batch consistency, high sintering/printing density, and outstanding mechanical properties.
Product Real-World Photos & Microscopic Morphology
Spherical tungsten powder
Actual product photos of the powder.
15–53 μm spherical tungsten powder
Uniform particle size, sphericity ≥ 95%, ideal feedstock for SLM 3D printing.
3D-printed tungsten parts
Complex-structured tungsten components, rocket nozzles, medical collimators
Spherical tungsten powder
Tungsten boasts the highest melting point (3,422°C), excellent high-temperature strength, a low coefficient of thermal expansion, and superior X-ray absorption, making it an indispensable material in aerospace, the nuclear industry, electronic packaging, and medical radiation shielding.
Chemical Composition (wt%, TIJO Internal Control Standard)
| element | W | Fe | Ni | Mo | C | O | N | Other impurities |
|---|---|---|---|---|---|---|---|---|
| Typical value | ≥99.9 | ≤0.005 | ≤0.003 | ≤0.010 | ≤0.003 | ≤0.05 | ≤0.002 | ≤0.01 |
Main recommended particle size specifications
| Application | Particle size range | D10 (μm) | D50 (μm) | D90 (μm) | Loose packing density (g/cm³) | Flowability (s/50g) | Recommended Process |
|---|---|---|---|---|---|---|---|
| PM powder metallurgy | 2.0–2.4 μm | ≥1.2 | 2.0-2.4 | ≤3.5 | ≥4.5 | NA* | MIM micro-injection molding, ultrafine tungsten powder compaction, sintering |
| 3D printing | 15–53 μm | ≥12 | 28-38 | ≤55 | ≥10.0 | ≤13 | SLM: Selective Laser Melting, Laser Cladding |
* The flowability of ultrafine powders is not suitable for standard testing with a Hall flowmeter. Other particle sizes can be customized upon request.
| Parameter item | Typical value | Note |
|---|---|---|
| Melting point | 3422℃ | The highest among refractory metals, suitable for ultra-high-temperature environments. |
| Density (theoretical) | 19.3 g/cm³ | When the sintering/printing density is ≥98%, the density is approximately 19.0 g/cm³. |
| Thermal conductivity (20°C) | 173 W/(m·K) | Good thermal conductivity |
| Linear thermal expansion coefficient (20–1000°C) | 4.5×10⁻⁶ /°C | Low thermal expansion and excellent dimensional stability. |
| Resistivity (20°C) | 5.6 μΩ·cm | Suitable for electronic packaging and electrode materials. |
Core Advantages of 2.0–2.4 μm for Powder Metallurgy (PM)
| Performance Dimension | 2.0–2.4 μm spherical tungsten powder | Conventional submicron tungsten powder |
|---|---|---|
| Sintering activity | Moderate, with controllable shrinkage and high dimensional accuracy. | Too high, prone to deformation and cracking. |
| Tap density | ≥4.5 g/cm³, uniformly filled | Lower, prone to porosity |
| MIM feedstock flowability | Excellent; injection-molded with a full, robust finish. | Generally, underfilling is likely to occur. |
| Oxygen content | ≤0.05%, sintering does not readily increase oxygen content | Relatively high (>0.1%), affecting densification. |
A particle size of 2.0–2.4 μm is ideal for tungsten-based MIM feedstock, balancing sintering activity with dimensional stability, and is widely used in the mass production of precision tungsten alloy components.
Core advantages of 15–53 μm for 3D printing (SLM)
| Performance Dimension | 15–53 μm spherical tungsten powder | Irregular tungsten powder/Other |
|---|---|---|
| Powder spreading uniformity | ✓ Excellent, no agglomeration | Poor; prone to blade jamming. |
| Print density | ≥99% (under optimized parameters) | ≤95%, highly porous |
| Surface quality | Smooth, with a minimal spheroidization effect | Rough, with severe spheroidization. |
| Mechanical Properties of Components | Flexural strength ≥ 800 MPa | Lower, with pronounced anisotropy. |
15–53 μm is the mainstream particle size for tungsten-based SLM printing, and when combined with optimized processing parameters, it enables the fabrication of complex, high-density tungsten components.
Typical application areas
Powder Metallurgy (PM/MIM)
2.0–2.4 μm is used for tungsten alloy injection molding, high‑density counterweights, armor‑piercing penetrator cores, and shielding components.
3D printing (SLM)
15–53 μm is used for rocket nozzles, heat exchangers, complex tungsten components, and medical collimators.
Aerospace
High-temperature engine components, combustion chamber liners, and satellite structural parts
Electronic packaging
Tungsten-copper/tungsten-silver heat sink substrates, semiconductor heat sinks, microwave tube grids
Medical/Nuclear Industry
X-ray target materials, radiotherapy shielding blocks, nuclear radiation protection containers
Thermal spraying
Plasma-sprayed tungsten coating, resistant to high-temperature erosion and ablation.
End-to-end testing capability
Each batch of spherical tungsten powder undergoes comprehensive inspection for composition, particle size, oxygen content, sphericity, flowability, and tapped/loose bulk density, with a Certificate of Analysis (COA) provided.
Packaging & Delivery
Powder packaging
Aluminum foil bag vacuum sealing + iron drum/plastic drum
1 kg, 5 kg, 10 kg
Delivery time
Fast delivery of standard products
Batch Traceability
Sample retained for each batch; COA report shipped with the goods.
Free sample
Provide samples
For process validation
Customized Services
Particle size can be customized to meet customer requirements.
Technical Support
From powder selection to MIM/3D printing process optimization
Assist customers with development
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.
