To reduce the deformation of tungsten alloy EFP in recycle medium as far as possible, recycle medium generally adopts polyfoam, serrago, cotton yarn, mixture of serrago and sand or woods, etc. According to the difference of shape, speed, materials or others of tungsten alloy EFP, confirm the distance of recycling and use the combination of different recycle medium thickness.

The soft recovery tungsten alloy EFP, on one hand, can prove accuracy of design and provide basis for the calculation of penetration. On the other hand, it can be used for the design and manufacturing mould of blowdown wind tunnel for the research of aerodynamic force. It can also express the properties of tungsten alloy warhead.


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Electrical contacts are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Only Tungsten copper materials will stand these high temperature & aberration.

Tungsten copper materials have good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the Tungsten Copper with a high copper content may give the lowest erosion. As arcing severity increases, the Tungsten copper with the higher refractory content withstand arc erosion better. Tungsten coppers are also used as arcing edges of selector switchblades in transformer tap changers.


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Tungsten's primary application for over 100 years has been as the tungsten filament in incandescent light bulbs. Doped with small amounts of potassium-aluminum silicate, tungsten powder is sintered at high temperature to produce tungsten filament that is in the center of light bulbs that light millions of homes around the world.

Due to tungsten's ability to keep its shape at high temperatures, tungsten filament is now also used in a variety of household applications, including lamps, floodlights, heating elements in electrical furnaces, microwave ovens, x-ray tubes and cathode-ray tubes (CRTs) in computer monitors and television sets. The metal's tolerance to intense heat also makes it ideal for thermocouples and electrical contacts in electric arc furnaces and welding equipment. Applications that require a concentrated mass, or weight, such as counterweights, fishing sinkers and darts often use tungsten because of its density.

1. Environmentally Friendly
Tungsten is much more environmentally friendly than lead. In fact, according to the U.S. Government's Priority List of Hazardous Substances, lead is the second most hazardous substance (Arsenic being #1).

2. Higher Density
Lead has a density of about 10 g/cc, but with tungsten, you can achieve densities of up to 18.6 g/cc! Higher density means smaller parts for the same weight.

3. Non-Toxic Alternative
Lead has already been phased out of kids’ toys, electronics, and electrical equipment. New regulations for lead paint removal go into effect in April 2010. At some point all lead use will be phased out, so why not get a jump on finding environmentally-friendly lead alternatives, like tungsten?

4. Hardness
Tungsten comes in many alloys, from a machinable alloy to a diamond-hard one. The alloy can be tailored to each specific application. Wear resistance and heat resistance are just two of hundreds of suitable applications.

5. Highest Melting Point
Despite its incredible hardness, tungsten can still be melted. However, at 6170°F (3410°C), tungsten has the highest melting point of any metal.

6. Versatility
Due to its high density and high melting point, tungsten is as versatile as lead, if not more so. Tungsten can be used as a lead replacement for a variety of applications:
a.Ammunition (tungsten shot),
b.Industrial (flywheels, cases, dies, rods, plates)
c.Jewelry (rings, bracelets)
d.Radiation Shielding (the protective mats radiologists use when taking your x-rays)
e.Sport (darts, golf clubs, fishing weights and lures)
f.Stationery (the tips used in ballpoint pens)
g.Weights (balance weights, wheel weights)

7. Cheap Disposal
Since Tungsten is environmentally friendly, there, are no federally mandated disposal costs associated with getting rid of tungsten, as there are with lead.

8. Recyclable
Tungsten parts are manufactured from powder using a powder metallurgy process. This allows each tungsten part to be recycled back to its original powder form. The recycling cost is relatively small and the process is well known and available in every country. There is a very small loss in tungsten recycling.

9. Highly Corrosion Resistant
Like lead, tungsten has excellent corrosion resistance, and is only attacked slightly by most mineral acids.

10. Appearance
Tungsten alloys can be plated and polished, thereby offering a wide variety of finishes.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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