Kanthal APMT

Construction materials Datasheet

Datasheet updated 2017-01-19 11:23 (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 Kanthal materials.

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

Kanthal APMT has high creep strength and excellent form stability up to 1300°C. 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, sulphidizing 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

  • Radiation 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, furnace furniture and load carrying trays
  • Radiant cracker tubes in ethylene furnaces
  • 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 ≤ 1200 ≤ 47,24
thickness 3 - 20 0.12 - 0.79
length ≤3000 ≤ 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 Kanthal materials.