Metallic heating elements
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 50-1425°C (120-2600°F).
Information
Element types
We can manufacture metallic heating elements to any specifications and with short delivery times. Examples of element types are:
- Coiled elements (i.e. spiral elements and edge-wounded elements)
- ROB - Meander elements
- Cartridge elements (i.e. bundle rod elements and cage elements)
- Tubothal® heating element
Characteristics
Metallic heating element alloys
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 oxidation 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. Compare weight and cost for Kanthal® FeCrAl alloys with NiCr alloys
| Grade | Maximum continuous operating temperature | Resistivity at 20ºC Ω mm2m-1 / 68ºF Ω/cmf |
|---|---|---|
| FeCrAl alloys | ||
| Kanthal® APM | 1425ºC (2600ºF) | 1.45/872 |
| Kanthal® A-1 | 1400ºC (2550ºF) | 1.45/872 |
| Kanthal® AF | 1300ºC (2370ºF) | 1.39/836 |
| Kanthal® D | 1300ºC (2370ºF) | 1.35/812 |
| Alkrothal® | 1100ºC (2010ºF) | 1.25/744 |
| NiCr alloys | ||
| Nikrothal® 80 | 1200ºC (2190ºF) | 1.09/255 |
| Nikrothal® 70 | 1250ºC (2280ºF) | 1.18/709 |
| Nikrothal® 60 | 1150ºC (2100ºF) | 1.11/668 |
| Nikrothal® 40 | 1100ºC (2010ºF) | 1.04/626 |
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