Radiant Tubes

Radiant tubes made in APM and Kanthal APMT are produced from powder metallurgy alloys in a hot isostatic process. The result is a material with a very uniform microstructure and excellent mechanical strength. Especially useful in high-temperature carburizing and sulfidizing atmospheres, these alloys are exceptionally resistant to corrosion and sagging. The tube program also includes FeNiCr grades, providing cost-efficient alternatives when furnace conditions are not too severe. Since heating and corrosion conditions often are tougher at the burner leg of the tube, Sandvik has developed a method of manufacturing U and W tubes with APM or Kanthal APMT for the burner leg only.