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Kanthal APM Construction Material

Grand Metal Corporation carries a variety of Kanthal Brand product and supply at reasonable cost.

Kanthal APM is an advanced powder-metallurgical, dispersion-strengthened, ferritic iron-chromium-aluminium alloy (FeCrAl alloy) with exceptionally good form stability and oxidation resistance. It is suitable for furnace temperatures up to 1250°C (2282°F).

The alloy offers a unique combination of excellent oxidation properties and form stability at high temperatures. Kanthal APM forms an excellent, non-scaling surface oxide, which gives good protection in most furnace environments, i.e. oxidizing, sulpidizing and carburizing gas, as well as against deposits of carbon, ash, etc.

Typical applications for Kanthal APM are in high-temperature structural parts in furnaces such as mesh belts, loaders, mounting systems for elements or insulation and loading baskets.

Useful Information of Kanthal APM Construction Material

Chemical Composition
Si % Mn % Cr % Al % Fe %
C %
Nominal composition - - - - 5.8 Balance
Min - - - 20.5 -
Max 0.08 0.7 0.4 23.5 -

Mechanical Properties At Elevated Temperature

Wire size Yield strength Tensile strength Elongation Hardness
Ø Rp0.2 Rm A
mm MPa MPa % HV
4 470 680 20 230

Creep Rupture Strength

Time 800°C / 1472°F 1000°C / 1832°F 1200°C / 2192°F 1400°C / 2552°F
h MPa psi MPa psi MPa psi MPa psi
100 15 2176 5.6 812 3.3 478 1.3 189
1000 11.3 1640 3.4 478 1.6 232 0.5 72
10000 8.2 1190 2.2 320 0.7 100 0.2 30

Physical Properties

Density g/cm3 7.1
Electrical resistivity at 20°C Ω mm2/m 1.45
Poisson's ratio 0.3
YOUNG'S MODULUS
Temperature °C 20 100 200 400 600 800 1000
GPa 220 210 205 190 170 150 130

Coefficient Of Thermal Expansion

COEFFICIENT OF THERMAL EXPANSION
20 - 250 11
20 - 500 12
20 - 750 14
20 - 1000 15
20-1200 16
20-1400 16

Thermal Conductivity

THERMAL CONDUCTIVITY
Temperature °C 50 600 800 1000 1200 1400
W/(m K) 11 20 22 26 27 35

Specific Heat Capacity

SPECIFIC HEAT CAPACITY
Temperature °C 20 200 400 600 800 1000 1200 1400
kJ/(kg K) 0.46 0.56 0.63 0.75 0.71 0.72 0.74 0.8
Melting point °C 1500
Max continuous operating temperature in air °C 1425
Magnetic properties The material is magnetic up to approximately 600°C (Curie point)
Emissivity - fully oxidized material Ɛ 0.7
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