Ready-made metallic heating elements made from wire or strip in Kanthal iron-chromium-aluminium alloys or Nikrothal nickel-chromium alloys for element temperatures between 50 - 1200°C Element types.
Kanthal and Alkrothal FeCrAl alloys are characterized by high resistivity and capability to withstand high surface load. They can be used at maximum element temperature of 1425°C (2600°F).
The NiCr-based alloys are characterized by very good mechanical properties in the hot state as well as good oxdiation and corrosion properties. They are suitable for element temperatures up to 1250°C (2282°F)
Using Kanthal FeCrAl alloys instead of NiCr alloys results in both weight-saving and longer element life, leading to considerable cost savings.
| Grade | Maximum continuous operating temperature | Resistivity at 20℃ Ω mm2m-1 / 68℉ Ω /cmf |
|---|---|---|
| FeCrAl alloys | ||
| Kanthal APM | 1425℃(2600℉) | 1.45/872 |
| Kanthal A-1 | 1400℃(2550℉) | 1.45/872 |
| Kanthal AF | 1300℃(2370℉) | 1.39/836 |
| Kanthal D | 1300℃(2370℉ | 1.35/812 |
| Alkrothal | 1100℃(2010℉) | 1.25/744 |
| NiCr alloys | ||
| Nikrothal 80 | 1200℃(2190℉) | 1.09/255 |
| Nikrothal 70 | 1250℃(2280℉) | 1.18/709 |
| Nikrothal 60 | 1150℃(2100℉) | 1.11/668 |
| Nikrothal 40 | 1100℃(2010℉) | 1.04/626 |