Incoloy 800

Principal Design Features

This alloy is a slightly modified version of Incoloy 800 in that the 800H grade has higher creep and rupture strength. This is due to a closely controlled carbon content and a modified heat treatment.


Applications include piping for petrochemical plants, heaters and heat exchangers where long term exposure to high temperatures is a major consideration.


Conventional machining techniques used for iron based alloys may be used. This alloy does work-harden during machining and has higher strength and “gumminess” not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of the alloy ahead of the cutting.


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