Product Code : ME-W-5N-PO
Tungsten powder is the metal tungsten in powder form. It is the raw material for the preparation of tungsten processing materials, tungsten alloys, hard alloys and other tungsten products. Tungsten powder is generally prepared by hydrogen reduction of tungsten trioxide or ammonium paratungstate. For the tungsten powder with high purity and ultrafine particle size required for special application, the hydrogen reduction method of tungsten chloride was developed, and the particle size of tungsten powder obtained could be less than 0.05μm. The purity includes commercially pure, 3N (99.9%), 3N5 (99.95%), 4N (99.99%), 4N5 (99.995%), and 5N(99.999%).
CAS #: 7440-33-7
Linear Formula: W
MDL Number: MFCD00011461
EC No.: 231-143-9
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Product Information
Tungsten Powder is the metal tungsten in powder form. It is the raw material for the preparation of tungsten processing materials, tungsten alloys, hard alloys and other tungsten products. Tungsten powder is generally prepared by hydrogen reduction of tungsten trioxide or ammonium paratungstate. For the tungsten powder with high purity and ultrafine particle size required for special application, the hydrogen reduction method of tungsten chloride was developed, and the particle size of tungsten powder obtained could be less than 0.05μm.
ATT is a supplier of Tungsten Powder that can be supplied in a wide range of density, particle size ranges, and purity. The purity includes commercially pure, 3N (99.9%), 3N5 (99.95%), 4N (99.99%), 4N5 (99.995%), and 5N(99.999%).
Synonyms
Tungsten particles, Tungsten microparticles, Tungsten micropowder, Tungsten micro powder, Tungsten micron powder, Tungsten submicron powder, Tungsten sub-micron powder.
Specifications Of Tungsten Powder
| Particle Size | Minimum 85% > 70 Microns |
| Particle Size Distribution | Minimum 90% between 100 and 200 Mesh |
| Bulk Density | Minimum 18.50 g/cc (Helium Pycnometer) |
| Tap Density | Minimum 11.90 g/cc (ASTM B527) |
Particle Size Of Tungsten Powder
| Type | Item No. | Particle Size |
| Nanometer tungsten powder | WP-01 | 10 nm |
| WP-02 | 50 nm | |
| WP-03 | 90 nm | |
| Ultrafine tungsten powder | WP-04 | 0.3-0.4 μm |
| WP-05 | 0.4-0.5 μm | |
| WP-06 | 0.5-0.6 μm | |
| Fine tungsten powder | WP-07 | 0.6-0.99 μm |
| WP-08 | 1.0-1.39 μm | |
| WP-09 | 1.4-1.99 μm | |
| WP-10 | 2.0-3.99 μm | |
| WP-11 | 4.0-5.99 μm | |
| WP-12 | 6.0-9.99 μm | |
| Coarse tungsten powder | WP-13 | 10.00-19.99 μm |
| WP-14 | 20.00-39.99 μm | |
| WP-15 | >40.00 μm |
Chemical Composition for Tungsten Powder
| Name | W(%,Min.) | Impurities (%, Max. ) | ||||||||||
| Al | As | Bi | Ca | Mg | Cd | Co | Cr | Cu | Fe | K | ||
| Tungsten Powder | 99.9 | 0.001 | 0.0012 | 0.0001 | 0.002 | 0.001 | 0.0003 | 0.001 | 0.0015 | 0.0008 | 0.004 | 0.002 |
| Na | Mn | Mo | Ni | P | Pb | Sb | Si | Sn | Ti | V | C | - |
| 0.002 | 0.0007 | 0.004 | 0.002 | 0.001 | 0.0001 | 0.0003 | 0.002 | 0.0001 | 0.0008 | 0.0008 | 0.005 | - |
Tungsten Powder Properties
| Molecular Weight | 183.85 |
| Appearance | Silvery |
| Melting Point | 3410 °C |
| Boiling Point | 5900 °C |
| Density | 19.3 g/cm3 |
| Solubility in H2O | N/A |
| Electrical Resistivity | 5.65 μΩ ·m (27 °C) |
| Electronegativity | 1.7 Paulings |
| Heat of Fusion | 35.3 kJ/mol |
| Heat of Vaporization | 806.7 kJ/mol |
| Poisson's Ratio | 0.28 |
| Specific Heat | 0.133 J/g mol (20 °C) |
| Tensile Strength | 750 MPa |
| Thermal Conductivity | 1.73 W/m K |
| Thermal Expansion | (25 °C) 4.5 µm·m-1·K-1 |
| Vickers Hardness | 3430 MPa |
| Young's Modulus | 411 GPa |
Applications of Tungsten Powder
Tungsten powder is mainly used in the production of weight fillers, radiation shielding fillers, induction accelerators, etc. The thin film surface of its polymer mixture makes it suitable for radiation protection. It is also an ideal heavy metal filler for injection-molding applications due to its large particle size. Tungsten powder is suitable for applications in the metal spray industry.
Packaging of Tungsten Powder
Standard Packing:
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.
ATTs’ Tungsten Powder is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
Chemical Identifiers
| Linear Formula | W |
| CAS | 7440-33-7 |
| MDL Number | MFCD00011461 |
| EC No. | 231-143-9 |
| Beilstein/Reaxys No. | N/A |
| Pubchem CID | 23964 |
| SMILES | [W] |
| InchI Identifier | InChI=1S/W |
| InchI Key | WFKWXMTUELFFGS-UHFFFAOYSA-N |
