Tungsten alloys, being used in battlefield munitions to make them less toxic may cause cancer in soldiers wounded by them.

Researchers at the Forces Radiobiology Research Institute implanted pellets of the tungsten alloys in rats to simulate shrapnel wounds from the weapons. Some rats received high-dose pellets, some low-dose and some pellets of other material for controlled comparison.

All of the rats implanted with tungsten developed extremely aggressive tumors surrounding the pellets. Though the tumors in the low-dose individuals grew more slowly, all of the tumors spread rapidly to the lungs of the rats, requiring researchers to euthanize the animals well before the anticipated end of the study.

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1. Locate the packaging for all tools that use hardened metal tips such as end-mills, drill bits, cutters and saw blades.

2. Read the labels on the packaging. If the packaging indicates the tips of these tools are hardened carbide, they have cobalt mixed in with the alloy. As you use these tools, they wear down and create dust contaminated with cobalt.

3. Locate the packaging for any tungsten carbide raw materials. All raw materials have a "material safety data sheet." The MSDS must indicate all of the ingredients used in the manufacturer of the raw materials. If the carbide has cobalt in it, it is listed on the MSDS.


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Tungsten alloys generally have two-phase composites consisting of W-Ni- Fe or W-Ni-Cu or even W-Ni-Cu-Fe, some tungsten alloy is added Co、Mo、Cr, etc . Tungsten content in conventional heavy alloys varies from 85 to 97 weight percent and is the reason for their high density, the density between 16.5 and 18.5 g/cc. It could be made as various shapes, such as rod, ball, cylinder, brick, ring, etc.

As tungsten alloy cubes are high density with small capacity, high temperature resistance, high impact resistance and crack resistance, wonderful shock resistance, good corrosion resistance, High absorption capacity against X-rays and gamma rays, Good modulus of elasticity, High hardness, etc.

Tungsten alloy cubes is in small volume with high density, which means it could be used in military field, such as penetrating projectiles, counterweights for military defense, projectiles in the missile weapons, armor piercing ammunition, prefabricated fragments.

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Nuclear research establishments use nuclear reactors or cyclotrons to study or create radioactive materials. Tungsten alloy is used in research activities as collimators (devices which guide or focus beams of radiation) or containers for radioactive isotopes. Tungsten alloy is ideal for shielding against both X- and Gamma radiation. The very high density of tungsten shielding (more than 60% denser than lead) allows a reduction in the physical size of shielding components, without compromising the effectiveness of the shielding characteristics.

Tungsten spheres are used with remote handling tongs to process radioactive materials inside hot cells. The spherical joints allow the tongs to be manipulated through the lead walls of the hot cell. When high levels of radioactivity are involved, tungsten alloy is the ideal material to protect operators from radiation.

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Tungsten heavy alloys offer a unique combination of properties like high density, high stiffness and good machining properties. This class of alloys is a cost effective way to combine these attributes for your application. Some of tungsten heavy alloys offer very high strength in combination with good ductility.

Some properties of tungsten heavy alloys:
    high density (15.5 to 18.5 g/cc)
    high stiffness (Young’s Modulus <= 400 GPa)
    high strength (<= 1700 GPa)

Typical applications for tungsten heavy alloys include:
    good machining properties
    radiation shielding/collimation (gamma and x-ray) in medical and     nuclear equipment
    balancing weights in aerospace and automotive industry
    precision tools for machining

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Whether in the world of medical or industrial X-ray technology, radiotherapy or nuclear power stations: Wherever high-energy radiation is used, it is vital to protect people against it.

The denser the material, the better able it is to protect from radiation. That is why heavy elements absorb X-rays and gamma radiation particularly well. Lead is still the most frequently used shielding material.But lead is a toxic material that is harmful to the environment and humans. The onerous recycling process makes lead expensive despite the low initial procurement costs.

The density of tungsten is 60 percent higher than that of lead. That is why even thinner layers of tungsten alloy are able to provide reliable shielding against radiation. The tungsten alloy is particularly suitable as a shielding material. It consists of tungsten and a small proportion of nickel-iron. Like tungsten, the material has excellent shielding properties. However, it is also considerably more ductile than tungsten and can therefore be machined better.

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Tungsten carbide rod is divided into forging tungsten carbide rod, straightening tungsten carbide rod, the polished tungsten carbide rod.

The main purpose of tungsten carbide rod is to create the filament with doped tungsten carbide rod,cathode tube and the gas discharge lamp electrode. Pure tungsten carbide rod is used for bracket, lead wire, electrodes, tungsten bracelet point materials.


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Tungsten carbide rod applications include drill bits, end mills, and reamers. Custom diameters and length are also available in these grades as well as metric sizes.

Tungsten carbide rods are mostly applied for end mill and drill with sub-micron grain grade YG10X, for non-ferrous precision cutting and wood cutting with Sub-micron grain grade YG6X, and for fibreglass reinforced plastics, titanium alloys, hardened steel with Ultra-fine grain grade YG8X, ect.


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Tungsten carbide metal powder is the raw materials of producing tungsten carbide, pure tungsten and tungsten alloy products, in the process of obtaining tungsten powder, about 80% is for tungsten carbide  production. Tungsten carbide metal powder is loose substance, its performance reflects the nature of the metal itself and the individual particles traits and the characteristics of the particle group.

The performance of the metal powder depends largely on the method of producing powder and its preparation process. The basic performance of the powder can be tested by standard measurement methods.


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The Yttrium- Tungsten Electrode produces a slim arc and a level of compression when used in welding .Moreover, it has a deeper melting depth in medium and high current .It is mainly in the military, aviate and astronautic industries.

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