Kanthal® APMT

Construction materialsDatasheet

Datasheet updated 2024-09-05 12:05 (supersedes all previous editions)

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal®.

Kanthal® APMT construction material is an advanced powder metallurgical, dispersion strengthened, ferritic iron-chromium-aluminum alloy (FeCrAlMo alloy) recommended for continuous use up to 1250°C (2280°F) in oxidizing and reducing environments.

Kanthal® APMT construction material has high creep strength and excellent form stability. Kanthal® APMT forms a protective and non-scaling Al2O3 surface oxide when exposed to high temperature, which gives good protection in most furnace and combustion environments, i.e. oxidizing, sulfidizing and carburizing, as well as against attacks from deposits of coke, ash, etc. The combination of excellent oxidation properties and form stability makes the alloy unique. The superior resistance of Kanthal® APMT to oxidation and carburization makes it very suitable for high temperature construction applications in various atmospheres.

Applications

  • Radiant tubes for electrical and gas heated furnaces
  • Retorts and muffles for heat treatment and high-temperature sintering of powder metallurgical components
  • Shielding tubes
  • Burner components, nozzles and flame detectors
  • Load carriers, e.g. load carrying trays or baskets
  • Furnace furniture, and furnace construction components
  • Uncooled components in coal, gas, and biofuel fired power plants
  • Thermocouple protection tubes in power plants and high temperature petrochemical processes

Values and diagrams are representative for all product forms in delivery condition unless otherwise stated. Values presented in imperial units are interpolated from tests made in SI-units.

Forms of supply

Form   Dimensions (mm) Dimensions (inch)
Plate Width ≤ 1500 ≤ 47.24
Thickness 3 - 20 0.12 - 0.79
Length ≤3300 ≤ 118.44
Extruded tubes Outer dia. 26 - 260 1.05 - 10.24
Wall thick. 2.87 - 11.0 0.11 - 0.43
Length** 3000 - 13000 118.11 - 511.81
Cold Rolled Strip* Width ≤ 205 ≤ 8.07
Thickness 0.2 - 3 0.01 - 0.12
Wire Ø 0.2 - 9.5 0.01 - 0.37
Rod Ø 5.5 - 12 0.22 - 0.47
Round bar Ø ≤ 100 ≤ 3.94
Length ≤ 4500 ≤ 177.17
Forging blanks Width ≤ 500 ≤ 19.69
Thickness 35 - 170 1.38 - 6.69
Length** ≤ 3000 ≤ 118.11
Square bar ф ≤ 150 ≤ 5.91
Length ≤ 4500 ≤ 177.17

Other sizes and forms can be discussed on request

*) Cold rolled strip can be delivered as cut to length products

**) Length depending on cross section

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal®.