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Tungsten Metal powder are mostly used in the manufacturing of diamond segments by hot pressing as additives in the metal matrix to improve the diamond retention and cutting ability. Also, these powders are used to manufacture electrical contacts, copper tungsten electrodes, weight fillers, induction accelerators, radiation shielding fillers and counter balance. Higher density Tungsten powder used for plastic densifier.
| Avg. particle size F.S.S.S. (µ) | 1.5-3 | 4-6 | 8-10 | 12-15 |
| Apparent density g/cc | 2.5 | 3.4 | 5.1 | 6.2 |
| W, % | Min. 99.85 |
| O₂, % | Max. 0.06 |
| Fe, % | Max. 0.006 |
| Mo, % | Max. 0.001 |
| Cu, % | Max. 0.001 |
| Na, % | Max. 0.002 |
| Co, % | Max. 0.002 |
| Ca, % | Max. 0.001 |
| Mg, % | Max. 0.001 |
| Mn, % | Max. 0.001 |
| Zn, % | Max. 0.001 |
Any other specification can be made as per order.
Tungsten carbide powders are used to manufacture various graded powder for cemented tungsten carbide products and manufacturing of diamond segments to increase the hardness and abrasion resistance of the tools.
| Avg. particle size F.S.S.S. (µ) | 2.5 | 5.0 | 10.0 | 15.0 |
| Apparent density g/cc | 2.4 | 3.2 | 4.8 | 6.0 |
| Cbonded, % | Min. 6.11 |
| Cfree, % | Max. 0.03 |
| Fe, % | Max. 0.005 |
| Mo, % | Max. 0.001 |
| Cu, % | Max. 0.002 |
| Na, % | Max. 0.003 |
| Co, % | Max. 0.001 |
| Ca | Max. 0.001 |
| Mg, % | Max. 0.001 |
| Mn, % | Max. 0.001 |
| Zn, % | Max. 0.001 |
Fused Tungsten Carbide powders have very high hardness and outstanding abrasion resistance. These are used to manufacture diamond core drill bits, electrodes for hard surfacing, diamond tools to cut very abrasive materials and wear resistence coating like hardox plates etc…
Physical Properties
Mesh Size – ASTM/BSS standard, from -40 to +600 as per requirement of the customer.
Appearance – Blackish Grey Powder
Apparent density – 5.90 g/cc. 0
Melting Point – 3000 C Approx
| Ctot,% | 3.5 - 4.1 |
| Cfree,% | Max. 0.003 |
| Fe ,% | Max. 0.0 |
| Cu,% | Max. 0.001 |
| Co,% | Max. 0.002 |
| Mg,% | Max. 0.001 |
| Ni,% | 0.001% |
| W,% | Balance |
| Element | % | |
|---|---|---|
| Co | 99.8% | Min. |
| Fe | 0.010% | Max. |
| Mn | 0.001% | Max. |
| Zn | 0.002% | Max. |
| Na | 0.002% | Max. |
| Ni | 0.006% | Max. |
| Cu | 0.001% | Max. |
| Mg | 0.001% | Max. |
| O2 | 0.34% | Max. |
Ammonium Paratungstate [(NH ) (H W O 4H O] is a 4 10 2 12 42 2 material that is crystallized after the refining of tungsten raw materials such as tungsten concentrates or scrap. It can be further converted into a tungsten oxide for reduction into pure tungsten powder through a process of hydrogen reduction.
| Type | APT |
|---|---|
| Average Fisher Particle Size FSSS (µm) | 30.0-70.0 |
| Apparent Density (g/in³) | 30-55 |
| Standard Screening (mesh size) | -100 |
|
Carbon (max) & WO3 (min)
Composition (WT%) |
≤0.0010 ≤88.5 |
| Property | Specification |
|---|---|
| WO3 | 55% min |
| Size | < 2mm |
| Moisture | 4.0% max |
| Element | Maximum (WT%) |
|---|---|
| As | 0.20 |
| Ca (wolframite only) | 1.00 |
| Cd | 0.01 |
| K | 0.10 |
| Mo | 0.50 |
| P | 2.00 |
| Pb | 1.00 |
| Element | Value |
|---|---|
| WO3 (as supplied) | Min. 65% |
| H2O | Max. 10% |
| Na | Max. 22% |
| S | Max. 2% |
| F | Max. 2% |
| Fe | Max. 0.2% |
| Mo | Max. 0.4% |
