Thermal Processing

Engineered for Extreme Heat

With high-temperature strength and resistance to corrosion by furnace atmospheres, the INCOLOY®, INCONEL® and NIMONIC® alloys are ideal for furnace components.


Serving Thermal Needs in Multiple Applications

For refining, processing and other areas, Special Metals makes the specialty alloys needed for thermal processing projects.


Popular Thermal Applications

We supply alloys for radiant tubes, muffles, retorts, belts and hearths and for the jigs and carriers that support the work through the heat-treatment processes.

Seamless Tubing Solutions

KOTHERM® and NIOTHERM® wires and INCOTHERM™ alloy seamless tubing are used for thermocouples.

Designed for Punishing Heat

INCONEL® alloy HX is a nickel-chromium-iron-molybdenum alloy with outstanding strength and oxidation resistance at temperatures up to 2200°F.

Alloys for Thermal Processing


  • INCONEL® alloy 600
  • INCONEL® alloy 601
  • INCONEL® alloy 601GC®
  • INCONEL® alloy 603XL
  • INCONEL® alloy 617
  • INCONEL® alloy 690
  • INCONEL® alloy 693
  • INCONEL® alloy HX
  • INCOLOY® alloy 330
  • INCOLOY® alloy DS
  • INCOLOY® alloy 800
  • INCOLOY® alloy 800H/800HT®
  • INCOLOY® alloy 803
  • INCOLOY® alloy 890
  • INCOTHERM® alloy TD
  • NIMONIC® alloy 75