Tu 48-19-72-92. Powder is tungsten.
Are you interested in Tu 48−19−72−92? Supplier Avlob offers to buy tungsten powder at a bargain price. The supplier guarantees the timely delivery of products to any specified address. Regular customers can take advantage of discount discounts. The price is the best in this segment of rental.
Tungsten powder brands, Tu 48−19−72−92.
| Make | Name of the powder | Raw materials |
| PVN | Low-active | Ammonium paratungstate low-molybdenum or WO3 from (NH4) 5 H5 [H2 (WO4) 6] · H2O of grade A |
| PVB | Highly active | High purity ammonium paratungstate or WO3 from (NH4) 5 H5 [H2 (WO4) 6] · H2O of grade A |
| OEM | Technical | Ammonium paratungstate or WO3 from (NH4) 5H5 [H2 (WO4) 6] · H2O |
Percent composition
| Element | Mass fraction,%, not more than | ||
| PVN | PVB | OEM | |
| Fe | 0.008 | 0.006 | 0.02 |
| Al | 0,001 | 0,001 | 0.002 |
| Si | 0.003 | 0.002 | 0.005 |
| Ca | 0.005 | 0.002 | 0.0050 |
| Ni | — «--- | 0.0050 | 0.008 |
| P | — «--- | 0,0040 | 0.0050 |
| S | 0.004 | 0.004 | 0.004 |
| Mo | 0.04 | 0.02 | 0.2 |
| C | 0.003 | 0,0030 | 0.003 |
| As | 0.005 | 0,0030 | 0.03 |
| K | 0.02 | 0.02 | 0.02 |
| Na | 0,015 | 0.01 | 0.02 |
| O 2 + Moisture | 0.25 | 0.35 | 0.2 |
| Mass fraction of tungsten | basis | basis | basis |
Dispersion
The content of grains larger than 4 μm in a low-active tungsten powder should not exceed 40%. Bulk density of tungsten powders should be in the range of 3.0−15.5 g / cm3.
| Brand of powders | Fisher grain diameter, μm |
| PVN | 3.5−6.0 |
| PVB | 0.8−1.7 |
| OEM | 3.5−6.0 |
Storage
In closed warehouses or under a canopy, which provides adequate protection against mechanical and other damage.
Delivery, price
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