Tungsten Granules  Manufacturers, Traders, Suppliers

Tungsten powders are obtained from tungsten acid in a reduction process. The grain size of the metallic tungsten powder depends on the grain size of the tungsten acid and the reduction conditions. The primary grain is very fine and has a grain size less than 0.01 mm with few exceptions. Due to its grain shape, fineness and surface, it also has a low bulk weight compared to the density of tungsten. This weight is generally between 2.5 and 4 g/cm3.
However, certain technical fields of application require tungsten powder with significantly coarser grain sizes, much higher bulk weights and in part also with especially high chemical purity and good abrasion resistance.
DOTIMET® is our granulate made of sintered tungsten featuring a very high density and abrasion resistance. It is available in sorted grain sizes with different bulk weights and strike densities, and by request also with a minimal carbon and sulphur content

DOTIMET®-tungsten particles with a high bulk weight
While massive work pieces made of steel or iron only have a density of no more than 7.8 g/cm³, the bulk weight of densely sintered tungsten particles can be higher even as closely packed bulk material. Coarse crystalline DOTIMET® tungsten granulates have a bulk weight of 8 to 10.5 g/cm³ depending on the grain size distribution. Tungsten particles made from forged rods can even exceed these density values. That is why DOTIMET® tungsten particles with a high bulk weight are commonly used for versatile mass balancing. They produce greater mass forces in the same space compared to massive steel components and offer the additional benefit of intrinsic mobility, which is particularly advantageous for damping applications.
DOTIMET® – tungsten powder as a chemical additive
Using tungsten as a chemical additive means additional requirements have to be met due to the conditions of use. Special abrasion resistance demands have to be met in addition to the grain sizes of 0.5 to 2 mm required here. Our densely sintered DOTIMET® powders meet these requirements particularly well. Furthermore, the material must be C and S-free. This difficult to meet requirement is precisely monitored in DOTIMET® production with the most exact analysis methods. The coarse DOTIMET® granulate used here exhibits the following characteristics:
Quality DOTIMET WDC
Grain size 0,5 – 2 mm
Residual C-content