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Metal Heating Resistance Temperatures

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HVACGirl
HVACGirl Member Posts: 1
in THE MAIN WALL
What is the type of metal duct needed to withstand temps of  1600 degrees air temp at 6 in WC?

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  • Brad White
    Brad White Member Posts: 2,399
    For how long?

    It sounds like you are looking at a grease duct conforming to NFPA-96?



    Usually for that we specify welded minimum 16 gauge carbon steel (aka "Black Iron") for grease ducts, but with UL-1978 listed systems as an alternate. This will withstand a grease fire of 2000 degrees but only for a specified time, not continuous duty.



    Stainless steel is also used.



    But the 6 inches WG, well, that could be grease duct but it also sounds industrial such as material handling maybe? In that case, abrasion resistance is also a consideration and that goes to thickness.



    What is the application?
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"



    -Ernie White, my Dad
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