With high-temperature strength and resistance to corrosion by furnace atmospheres, the INCOLOY®, INCONEL® and NIMONIC® alloys are used for furnace components such as radiant tubes, muffles, retorts, belts and hearths, and for the jigs and carriers that support the work through the heat-treatment processes. KOTHERM® and NIOTHERM® wires and INCOTHERM™ alloy seamless tubing are used for thermocouples.