U and W shaped radiant tubes

U and W shaped radiant tubes for tube temperatures up to 1,250°C (2,280°F). The Kanthal® program of radiant tubes includes nickel-chromium (NiCr) alloys or Kanthal® APM and Kanthal® APMT iron-chromium-aluminium (FeCrAl) alloys for extremely demanding environments, of combinations of the two material types.

Read more about Kanthal® APM and Kanthal® APMT FeCrAl alloys

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    The flexibility in choice of material means that Kanthal® can offer the optimal tube design for practically any furnace atmosphere, process temperature and/or installation design. Our offer includes:

    Radiant tubes for very high temperatures and severe conditions

    Radiant tubes for tougher conditions at the burner leg

    Radiant tubes for medium high temperatures

    Compared Kanthal® alloys to other alloys:

    High-temperature corrosion properties
    Material In air / oxidizing Oxidizing sulphur Reducing sulphur Carburizing Nitriding
    ASTM 310 0 0 0 0  0
    253 MA1) + + ++ +  02)
    353 MA1) + - 0 ++ ++
    Kanthal® APM ++ ++ ++++ +++ +3)
    Kanthal® APMT ++ ++ ++++ +++ +3)

    1) 253 MA and 353 MA are trademarks owned by Outokumpu OY

    2) Nitriding may occur at very low dew point (<-60°C/-51°F)

    3) Severe nitriding may occur at low dew point (<-20°C/-29°F)