Surface state of tungsten bar:
Any oxidation, contamination, and severe excessive fusion, bubbling, delamination, or crack is not allowed for product W1. Camber should be no more than 10mm. Any excessive fusion, bubble, delamination, crack, surface bulky crystallization or severe oxidation &contamination are not allowed for products W2 and W3. The length of the spalls should not be more than 8mm, width no more than 3mm, depth no more than 1mm; The diameter of mechanical pitting should not be more than 1mm, depth no more than 0.5mm; Camber should be no more than 4mm. Any oxidation or contamination is not allowed for product w4. The cartridge of the vertical sintering part should be cut off, and the section is not allowed to be loose or intermingled.

Physical property of tungsten bar:
The density for W2, W3 tungsten bars is more than 17.5g/cm3. Measured data for the section grain size of W2, W3 can be provided.


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Grade of tungsten bar:
In reference to different chemical components and applying requirement, the grades of products are divided into four categories:W1, W2 ,W3,W4.

Appearance of tungsten bar:
The appearance of tungsten bar turns to be metallically gray or dark gray. Hygroscopy is not allowed on the appearance of W1 ,W2, and W3 tungsten bars.


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Tungsten bar is mainly used to found ingredient of material, cutter and heads, tungsten wire for lights instruments, electric contact points and conductor of heat, crankshaft and cylinder barrel of advanced automobile, ingredient of kinds of heat-resistant steel. Also used for making special steels, to make guns, artillery rockets, satellite airplane and ship. It has a luster rather like that of silver in uniform color. Though the whole bar may slightly curve, the maximum height of the bend should not be more than 7mm.

Tungsten bar with impurities is used to procedure bulb filaments or electron tube filaments, which are guaranteed to have remarkable resistance to high temperature.

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Tungsten has been used without ill effects as a component in US food and Drug Administration (FDA)-approved medical implants such as orthopedic hardware and tungsten coils for heart defects. Numerous countries have used tungsten and various tungsten alloy munitions for a number of years because of its high density and ability to penetrate armor.

Initially, tungsten carbide was used in munitions, but newer composites such as tungsten/nickel/cobalt and tungsten/nickel/iron have superior properties.


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Tungsten is a naturally occuring metal. Tungsten can be used either in pure form or mixed with other metals to make alloys.

Tungsten alloys tend to be strong, and resistant to heat and wear. Tungsten and its alloys are used in a variety of commercial products including loght bulb filaments, X-ray tubes, welding electrodes, grinding wheels and ceramic pigments.


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Tungsten, from the Swedish tung sten meaning ‘heavy stone'; chemical symbol W, was first isolated in 1783. The heavy alloys of this hard, dense metal should not be confused with tungsten carbide, as used in cutting tools. These alloys typically contain 90 - 97 wt%, hence deriving their fundamental properties from tungsten. As a result, WHAs are becoming the materials of choice for designers and engineers who require such properties as high density, good mechanical strength and ease of machining for use in radiation shielding and collimation and above all, counterweights and ballast.

Therefore, tungsten added with Ni, Fe, Cu is very suitable matreial for counterweights.


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Tungsten core strings came into existence partially because of the drawbacks of gut strings and as a concession to beginning students. Tungsten core strings are very stable in pitch, even when first installed. They also have a sound that is very different from gut strings. They all tend to have a sound that is simple, clear, direct, pure, and usually a bit hard with few overtones and no real complexity. Often they are bright and a bit thin sounding. This quality is not as pronounced in the cello where all metal strings are more standard. Non-classical players, especially country and folk fiddlers, as well as many jazz musicians often prefer steel strings. They also work well with small size, inexpensive student instruments.

In addition, most bass players use steel core strings. There have been some interesting changes in the construction of tungsten core strings and these changes have been of particular interest to cellists. These changes in technology have allowed manufacturers to produce tungsten core strings with more sophisticated sounds.


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Tungsten alloy crankshaft, sometimes casually abbreviated to crank, is the part of an engine which translates reciprocating linear piston motion into rotation.

The rods and bearings connects the piston to the crankshaft, when the piston moves up and down, the crankshaft is moved as describing a circle by the rods and bearings, then, the tungsten alloy crankshaft is rotating.

Nowadays, modern engine is often made from special metal alloys, and much lighter than earlier engines. So the powder and performance of a modern engine are increased. Also, material for crankshaft has been improved, and tungsten alloy is more and more increasingly used as the material for crankshaft.It is necessary to provide counterweights for the reciprocating mass of each piston and connecting rod to improve balance in engines, and these are typically cast as part of the crankshaft. Lead is cheap but the density is much lower than tungsten heavy alloy, and it is not environmental friendly, as for steel, tungsten heavy alloy are  more twice than the density of it, so compared with other materials, tungsten heavy alloy is certainly considered t as the most appropriate crankshaft material.

Other tungsten alloy crankshaft properties:
1, Small volume but high density. xEOL .
2, Excellent hardness. xEOL .
3, Superior wearing resistance. xEOL .
4, Good corrosion resistance. xEOL .
5, Wonderful Shock resistance. xEOL .
6, High {melting point | freezing point}. xEOL .
7, High temperature resistance. xEOL .
8, Environmental friendly.



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Tungsten alloy brick has the good properties of high density with small volume, perfect hardness, good corrosion resistance, non-toxic and environmentally friendly, so it is widely used as tanker counterweight because of the former properties.

Usually, tungsten alloy brick also could be manufactured as the parts of military defense, extrusion die, and counterweights for tank.


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Tungsten plastic is similar with tungsten poly, which combines tungsten and plastic. So tungsten plastic has the good properties of tungsten (high density, small volume, high temperature resistance, high radiation resistance, good tensible strength) and poly (low cost, good corrosion resistance, easily to be machined into different shapes of products).

As these properties, tungsten plastic is widely used as radiation shielding as well as counterweight in many fields.


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