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Metallic hot zones are made for very high temperatures between 1000 °C (1 832°F) and 2 800 °C (5 072 °F). As a specialist in refractory metals Plansee delivers molybdenum and tungsten hot zones with an excellent form stability and lifetime. Plansee designs and produces hot zones for various types of furnaces (vacuum, protective gas atmosphere, HIP etc) and thermal processes such as sintering, brazing or annealing. Hot zones consist of countless individual parts such as heating elements, shield packs and hearth assemblies and charge carriers. You can find all of these components at Plansee. - Hot zones made from molybdenum, tungsten, tantalum, niobium and their alloys - Full metal or hybrid hot zones with graphite or ceramic fiber insulation - From very small (a few cm³) through to very large (several m³) hot zones - For temperatures of between 1000°C (1832°F) and 2800°C (5072°F) - Tailor-made design: round, rectangular, vertical, horizontal or special geometries

Nozzle tips for hot runner nozzles made of titanium-zirconium-molybdenum offer particularly high thermal conductivity of 140 W/mK coupled with excellent temperature and corrosion resistance. Glass fiber-reinforced plastics are exceptionally strong during processing but also highly abrasive. An optimum combination of thermal conductivity and material hardness is required. The TZM nozzle tips of Plansee are exceptionally resistant to aggression: the SHN surface hardening process. Using SHN surface hardening, we can strengthen peripheral areas and entire TZM components through the addition of a permanent, adherent diffusion layer. As a result, our customers benefit from the use of a tough, heat-resistant material with a wear-resistant surface. Surface hardening takes place during the gas phase. Coatings that we produce using the SHN process adhere better than conventional PVD or CVD layers. They perfectly replicate the surface contour of the TZM product.