Alloy Steel NAS800 is a nickel-iron-chromium alloy that provides high strength and excellent resistance to oxidation and carburization at high temperatures. It also offers excellent corrosion resistance in many aqueous environments.

Alloy Steel NAS800

Workability

Whether for hot working or cold working, NAS 800 offers workability similar to austenitic stainless steels. For hot working, temperatures should be between 1000 and 1230℃, although light work may be done at temperatures as low as 850℃. To prevent cracks, we recommend avoiding the temperature range between 650 and 800℃. Although cold workability is similar to austenitic stainless steels, work hardening tends to be slightly lower.

Weldability

As with standard austenitic stainless steels, NAS 800 may be welded using techniques such as TIG, MIG, and shield metal arc welding. AWS ERNiCr-3/AWS ENiCrFe-2 welding rods are often used.

Heat Treatment

NAS 800 exhibits an austenite structure similar to austenitic stainless steels, and appropriate heat treatment procedures and requirements are similar. Typical heat treatments are as follows:

Annealing: 980~1060℃; rapid cooling

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Alloy Steel NAS800

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