High-Temperature Environments

Sheathed Heaters

Sheathed heaters play a vital role in toaster ovens, microwaves, air conditioners and other household electronic devices requiring a heating element. They also play a critical role in industrial driers, train heating systems and other places normally invisible to the general public. Sheathed heaters have a spiral-shaped heating wire, held in the center of a metal tube made from our NAS 800L or NAS H840, and the tube is filled with compressed electrical insulating powder. Because of the hot temperature involved, our products are ideal choices given their resistance to high-temperature oxidation and superior creep strength.

Image: Sheathed Heaters

Heat-Treating Furnaces

Heat treatment furnaces for providing heat treatment in a wide range of applications are exposed to high temperatures for long periods of time. A furnace material must therefore be selected that can handle high-temperature oxidation, high-temperature corrosion, high-temperature gas corrosion and creep. Although SUS 310S may be used in the open air, a nickel-base super alloy is often required in an environment filled with corrosive gases. To meet these needs, we have developed the Incoloy® products NAS 800 and NAS 825 along with the Inconel® products NAS 600 and NAS 601.

* Incoloy and Inconel are registered trademarks of Special Metals Corporation.

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