Inconel 690

Principal Design Features

A basic nickel-chromium alloy for corrosive and/or high temperature applications. The high chromium content make this alloy very resistant to attack from oxidizing chemicals or hot gases.


High temperature burners, duct work, petrochemical heaters and furnaces. The alloy has excellent resistance to stress-corrosion cracking.


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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