Sub navigation for Furnace products and heating systems

• Heating elements
• Heating modules
• Air heating cassettes
• Diffusion cassettes
• Recuperative burners
• Furnace tubes
  • Radiant tubes
• Heating systems for rodding shops
• Construction materials
• Furnace rollers
• Resistance heating wire and strip
• Technical ceramics
• Thermocouple wire and strip

Furnace tubes

Extruded tubes made from Kanthal APMT and Kanthal APM iron-chromium-aluminium (FeCrAl) alloys for gas-heated or electrically heated furnaces.

Kanthal furnace tubes can be used at temperatures up to 1250°C (2280°F) and are available in sizes from 26 to 260 mm (1.02-10.2 inch) outside diameter. Kanthal APM and Kanthal APMT furnace tubes are suitable for use as, for example:

• Radiant tubes (radiation tubes)
• Thermocouple protection tubes
• Muffle tubes
• Atmosphere sampling tubes
• Gas injection tubes
• Burner nozzles

Longer service life compared to NiCr alloys

Kanthal APMT and Kanthal APM furnace tubes offer several advantages compared to ceramic tubes, silicon carbide tubes and nickel-chromium (NiCr) alloyed tubes.

User benefits include superior resistance to, for example, carburization, thermal shock, sagging and distortion. This is due to the materials' excellent mechanical properties and their capability of forming a cohesive oxide film that protects against corrosion and atmospheric attack.

The lifetime of Kanthal APMT and Kanthal APM furnace tubes is often many times longer than that of nickel-chromium (NiCr) alloyed tubes.

Material data

¹⁾ The material can withstand temperatures up to 1425°C (2600°F). The table shows recommended maximum operating temperature.

²⁾ Creep rupture strength 10000 h MPa (N/mm²) at 1100°C (2010°F)

Stock standard sizes and tolerances