Can carbon steel be used at 800 degrees under normal pressure? !
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What are the steel pipes in a boiler? Is carbon steel used in atmospheric-pressure equipment, and can it withstand temperatures up to 800 degrees?
No. Carbon steel and low-alloy steel exhibit a tendency to graphitize at temperatures above 400°C; it is recommended to use heat-resistant steel or stainless steel.
Does 800 refer to the metal wall temperature or the flue gas temperature? Wall temperature is not acceptable; flue gas temperature is acceptable.
Oh, right, that’s different if an insulating lining is taken into account. Perhaps internal aluminum spraying can enable tolerance to such high temperatures
Flue gas temperature. Many hot blast stove manufacturers do this. I would like to ask how to calculate the wall temperature of a metal surface?
In many flue gas heat exchangers, carbon steel is used.
Aluminum spraying does not provide heat resistance. Corrosion resistance
I’ve never heard of it. It definitely can’t be used for containers, but it should be fine for things like chimneys as long as they don’t have to bear any loads.