99.999% Pure Tungsten

Tungsten is a silver-white, shiny metallic or gray heavy metal (depending on whether it occurs in pieces or in powder form). Hard and brittle, however, tungsten can be made ductile by hammering and z. B. be drawn into thin wires. Tungsten belongs to the group of refractory metals, which are among others. characterized by high melting points, good thermal conductivity and low thermal expansion. Another feature is high corrosion resistance.

Tungsten is suitable for the construction of resistance heating elements, the production of filaments (especially in high-temperature furnace construction and electrical engineering), engine parts, X-ray anodes and welding electrodes. Tungsten pins can be melted into low-melting glass to conduct electricity. Tungsten is also used in nuclear technology. About 80% of tungsten alloys are used in the steel industry and about 10% each in the hard metal and electrical industries.

Well over half of the tungsten extracted worldwide is processed into tungsten carbide. Carbide tools are made from this.

As a material, tungsten proves to be a real all-rounder; despite its flexibility, it has the second highest melting point of all elements (after carbon) at 3,407 ° C. This property and its exceptionally high resistance to acids (not even vulnerable to hydrofluoric acid) make it a popular material in the construction of industrial plants and chemical machines.

Work with tungsten alloys
In addition to its use in the industrial sector as a pure material, tungsten is also extremely popular in alloys. Here, tungsten is in great demand primarily because of its high melting point, for example in connection with molybdenum for turbine blades and also in the hot gas area of jet engines.

Alloys of the element are also often used in the well-known tungsten inert gas welding (TIG).

The high density of the metal (at 19.25 g / cm3 almost as dense as gold), in conjunction with other, more easily machinable metals, ensures a combination of the best properties of various materials.

At the same time, molybdenum offers good thermal conductivity with low thermal expansion. This means that molybdenum is also a popular material in semiconductor plate production or for power electronics.

Molybdenum alloys for targeted use
The material properties of molybdenum can be further specifically adapted using alloys. Molybdenum-alloyed steels, for example, increase their hardness, toughness and corrosion resistance considerably even with small Mo additions. Ferromolybdenum is used for this purpose: an iron-molybdenum alloy with 60-70% Mo. Apart from iron-molybdenum alloys, we offer a wide variety of alloys with copper, rhenium, chromium, lanthanum oxide, tungsten, niobium, tantalum or the remaining TZM alloy ( Titanium, zirconium, molybdenum). With the help of the alloys, density, melting point, toughness, thermal expansion and thermal strength as well as corrosion resistance can be further influenced. Inquire about your desired alloy without obligation or let us advise you on what is particularly suitable for your application.

Zirconium - highly technological and versatile
The metal with the chem. Atomic number 40, zirconium, is mainly used in compounds and alloys, but also has some practical properties as a pure substance.

The zircaloy mentioned above is, for example, the main component of the shells of uranium fuel elements in nuclear power plants. Here the element is characterized by an exceptionally high capture cross-section for thermal neutrons, as well as high corrosion resistance. This makes it suitable for the construction of chemical plants and especially for special parts such as valves, pumps, pipes or heat exchangers.

Zirconium is also suitable for the construction of incandescent lamps and vacuum systems, as it reacts with small amounts of oxygen and can therefore maintain the vacuum.

Zirconium alloys have a wide variety of uses
In addition to the best-known and most widespread alloy, Zircaloy, zirconium also gives other alloys valuable properties. As an addition to steel, for example, it increases the corrosion resistance, which is why surgical instruments are often made from such alloys.

Together with niobium, a superconducting alloy is created, which retains this property even under the influence of strong magnetic fields.

Basically, the addition of zirconium stabilizes an alloy and makes it more resistant.