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Tungsten wire for manufacturing filaments
Whether it’s a simple incandescent lamp, a general lamp, or a special halogen lamp, all of these require filaments that are made of dimensionally stable tungsten wire. We have developed the NS (non-sag) tungsten wire especially for this purpose. It is characterized by its higher creep resistance and satisfies the stringent requirements for service life, light yield, reliability, and mechanical robustness. Top quality guarantees reproducible processes We guarantee a purity of at least 99.95% – the perfect prerequisite for reproducible and controllable processes. We also manufacture our wires with very narrow diametrical tolerances, guaranteeing consistent mechanical properties and a defined “split level”. This is based on the frequency, shape, length, and depth of radial cracks and is determined by means of eddy current testing. The drawing steps and heat treatment during production are designed to achieve an excellent high-temperature creep resistance and satisfy the most stringent requirements. Customized products for your application We provide our W-NS fine wire in diameters of 12 µm to 300 µm with a diametrical tolerance of ± 1%. The W-NS fine wire is available with a black, cleaned, and electropolished surface, aligned or annealed. We provide our redraw wire with a diameter of 800 to...
2024-04-16 Learn More
Rods made of molybdenum, tungsten, tungsten-based composites, tantalum, and niobium
Our rods made of refractory metals and their composites are required anywhere unique material properties are in demand whether in medical technology, furnace construction, plastic injection molding, or the lighting industry. We produce the highest quality rods made of refractory metals in our ultra-modern production facilities. Our equipment enables us to offer a wide range of products, giving you diverse possibilities. We can also manufacture large quantities without any problems. Quality through precision We manufacture our rods to particularly strict diameter and roundness tolerances. In addition, we also guarantee rods of exceptional straightness as well as the highest density at large dimensions. Dimensions and surface qualities We manufacture molybdenum rods with diameters up to 210 mm and tungsten rods up to 90 mm at our modern production facilities using our one hundred years of experience in the processing of refractory metals. Thanks to the large-scale capacities of our production facilities, we can offer you a wide range of products in large quantities. Whether turned, centerless ground, forged, or pickled – we have the right surface in the desired dimension for your application. We would be happy to produce tailor-made rods for you as well as help you find innovative solutions...
2024-04-10 Learn More
Evaporation boats
We manufacture evaporation boats made of tungsten, molybdenum, molybdenum-lanthanum (ML), molybdenum-yttrium oxide (MY) or tantalum for the resistance evaporation process. When current is applied, our boats heat the material to be evaporated. The low vapor pressures of our metals ensure that no tungsten, tantalum, or molybdenum particles enter the vapor and the final layer. The vacuum evaporation process The thermal vacuum evaporation process (resistance evaporation) is a coating method and is one of the PVD (Physical Vapor Deposition) processes. The material for the final layer is heated inside a vacuum chamber until it evaporates. During the vacuum evaporation process, durable layers are produced from aluminum, silver, chromium, titanium nitride, or silica, for example. The result is sparkling watches, flawless mirrors, and high-quality electronic components. Also impressive are the long service life and high dimensional accuracy. Our standard product range We produce evaporation boats made of molybdenum, tungsten, and tantalum for your application: Tungsten evaporation boats Tungsten is highly corrosion-resistant compared with many molten metals and, with the highest melting point of all metals, is extremely heat-resistant. We make the material even more corrosion-resistant and dimensionally stable by means of special dopants such as potassium silicate. Molybdenum evaporation boats Molybdenum is a particularly stable metal and is also suitable for high temperatures....
2024-04-02 Learn More
$Heating conductors made of refractory metals$

Heating conductors made of refractory metals
Electrical current flows through the heating conductor, where it generates heat. This resistance heating creates the high temperatures in the furnace. Our components made of molybdenum, tungsten, tantalum, niobium, and their alloys are made for this. We can provide heating conductors for all types of high-temperature furnaces according to your application. By combining different constructions and materials for our heating elements, we are able to achieve low surface loading with an even temperature distribution. This ensures that the heating elements can reliably withstand high temperatures, even over long operating periods. The ideal material for your heating conductor Our materials belong to the refractory metals. Molybdenum and tungsten are primarily used in thermal processes under high temperatures. With their high melting point, they do not become soft, even at extremely high temperatures. Refractory metals have a low thermal coefficient of expansion and a higher thermal conductivity than steel. Our materials are also suitable for use with protective gases such as argon, helium, nitrogen, and hydrogen. Our heating conductors are available as: Sheets Rods Twisted wire Bundled wire Wire mesh heaters
2024-03-27 Learn More

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