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Stress Values for Incoloy 800H

Stress Values for Incoloy 800H

Stress Values for Incoloy 800H

(OP)
I have a situation where a furnace is operating at 1922F with 3/4" Sch40 tubes.  The Boiler & Pressure Vessel Code publishes allowable stress values up to 1650F.  Does anyone have a recommendation for finding allowable stress values above 1650F for SB-407 N08810 pipe?

RE: Stress Values for Incoloy 800H

Hwat design Code/Standard is the furnace designed to?  I would look there first.

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