Metallic heaters made from ML or tungsten are made for very high temperatures between 1000 °C (1 832°F) and 2 800 °C (5 072 °F). Plansee supplies heating elements for all types of high-temperature furnace in the form of ribbon, sheets, rods, twisted wire, wire bundles and wire mesh heaters.
Plansee's materials belong to the group of refractory metals. Molybdenum and tungsten are the two materials that are most commonly used in high-temperature thermal processes. Thanks to their high melting points, they do not soften even at very high temperatures. Refractory metals have a lower coefficient of thermal expansion and better thermal conductivity than steel.