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EWG E. WAGENER GMBH

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Molybdenum is a heavy metal which has a silver-white colour in piece form or a greyish colour in powder form. The stretchable and polishable heavy metal is hard and brittle, but still easy to process. Molybdenum belongs to the group of refractory metals with a melting point of 2.617°C. Molybdenum is mined mainly in North and South America and China. The metal is mainly extracted as a by-product of copper production. E.WAGENER supplies molybdenum in various shapes, alloys and processing forms. Suitable for your particular application.

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Tungsten is a silver-white, metallically shiny or grey heavy metal (depending on whether it occurs in pieces or in powder form). Hard and brittle, tungsten can, however, be made ductile by hammering and drawn into thin wires, for example. Tungsten belongs to the group of refractory metals, which are characterized by high melting points, good thermal conductivity and low thermal expansion, among other things. High corrosion resistance is a further characteristic. Tungsten is suitable for the construction of resistance heating elements, the manufacture of filaments (especially in high-temperature furnace construction and electrical engineering), engine parts, X-ray anodes and welding electrodes. Pins made of tungsten can be fused into high melting point glass for the passage of current. Tungsten is also used in nuclear technology. Tungsten alloys are used about 80% in the steel industry and about 10% each in the hard metal and electrical industries.

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Titanium is a silvery-white light metal that is often found, but is difficult to extract. In its pure form titanium is easy to form, malleable, thermally relatively stable and very good electrical conductor. Important characteristics are its mechanical strength and low thermal expansion. Titanium is relatively resistant to air at room temperature and its corrosion resistance is comparable to that of precious metals. High-purity titanium is used as a getter metal to remove the last gas residues in vacuum technology, as it reacts with small amounts of oxygen. Corrosion-resistant, pure titanium is used in the construction of chemical plants. Due to their high strength, low weight and excellent corrosion resistance, titanium alloys are excellent construction materials for shipbuilding and the aerospace industry. Titanium is also an important alloying element in special steels.

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Tantalum is a shiny grey, very hard and yet ductile heavy metal from the vanadium group, it is easy to form and weld. Tantalum belongs to the refractory metals, is very resistant to almost all acids (except hydrofluoric acid) and has a high absorption capacity for hydrogen and nitrogen. In nature, tantalum only occurs bound together with niobium. Tantalum is used in electrical engineering, chemistry, in high-temperature furnace construction, in evaporation plants and even in nuclear technology. Tantalum is added as an alloying component to rust and acid-resistant steels. Tantalum carbide is used for the production of hard metals. At E.WAGENER you can obtain tantalum in all common forms, alloys and processing forms, always in accordance with your requirements.

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Zirconium is a silver-grey, shiny heavy metal. In its pure form it is easy to work, corrosion resistant even at high temperatures and has a very low neutron capture cross section. In addition, zirconium offers good stability against structural damage caused by neutron irradiation and against cavitation by coolant flows. The metal is mainly used pure or alloyed with 1.2-1.7% tin, for corrosion resistant pipes, fittings and valves in the chemical industry. This special alloy is called Zircaloy. Zirconium plays an important role in reactor construction. It is used for fuel element claddings and holders, for the pressure vessel lining, and for all structural components that come into contact with neutrons. In the rocket and jet aircraft industry zirconium is used for the manufacture of combustion chambers and feed lines. In electron and X-ray tubes zirconium is used as getter material.

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The grey shiny niobium is not unlike tantalum, which also has a very high melting temperature. A striking difference to tantalum is its much lower density. The pure metal is easy to process due to its low hardness. However, it becomes much harder and more brittle due to minor carbon impurities. Niobium is a relatively base element. When exposed to air, a protective oxide layer forms around the metal, which protects it from further corrosion and provides additional resistance. These wafer-thin oxide layers on the metal surface cause the coloured iridescence that occurs when heating a compact piece with a burner. Niobium powder is pyrophoric and can therefore ignite by itself. Glowing niobium powder reacts with oxygen to form niobium(V)-oxide. The compact metal resists most acids at room temperature. After heating, however, almost all acids are able to decompose the metal.

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Bolts, nuts, threaded pins and washers made from molybdenum, tantalum and titanium. You can purchase cylinder bolts and countersunk screws, various threaded pins or nuts from us – to either standardised or individual specifications. We have an extensive stock of standardised parts in sizes M1 to M10 made from molybdenum, tantalum and titanium.

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We are your reliable partner for the procurement and processing of technical ceramics, e.g. Oxide ceramics (alumina, magnesia, zirconium oxide) and non-oxide ceramics (with carbide or nitride). Technical ceramics - also called industrial ceramics or industrial ceramics - have unique material properties and are therefore one of the most powerful materials available. We offer the following ceramic materials and parts: Semi-finished products: Rods, pipes, flat material, etc. Laboratory parts: bowls, crucibles, etc. Finished parts: Drawing parts of all kinds according to customer requirements

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