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Alloy 800

Last updated: December 7, 2018

What Does Alloy 800 Mean?

Alloy 800 is an iron-based metal alloy that is known for its resistance to heat and corrosion. In addition to iron, it also has relatively high amounts of nickel, cobalt and chromium.

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Corrosionpedia Explains Alloy 800

Alloy 800 has a high degree of corrosion resistance (especially to chloride stress corrosion) thanks to its high nickel content. Alloy 800 also has high additions of chromium that helps it resist oxidation.

Alloy 800 is able to resist heat exceptionally well, which makes Alloy 800 very popular in heat exchange and heat treatment applications such as for engine components in the aerospace industry. It can withstand the temperatures found in cryogenic applications up to 1,800°F (982°C).

Alloy 800 can be heat treated at temperatures above 1,800°F (982°C). This is close to its maximum recommended operating temperature of 2,100°F (1,148°C), so care should be taken to not exceed that during normal operating temperatures.

Alloy 800 can have its strength increased through work hardening procedures. Alloy 800 in its annealed condition has a yield strength of about 40,000 psi. It is quite ductile as well, with percent elongations of around 45.

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