Resistance heating wire for furnace heating elements in round form available in a range of alloys optimized for use in high temperature applications. The wide range of resistance heating alloys and resistance alloys in wire form makes it possible to select the most appropriate grade and size for each respective application, resulting in optimum end-product performance.
List of resistance heating alloys and resistance alloys:
| Type of alloy | Description |
|---|---|
| Kanthal and Alkrothal FeCrAl alloys* | High-resistivity iron-chromium-aluminium alloys for use up to 1400ºC (2550ºF). |
| Nikrothal NiCr alloys | High-resistivity nickel-chromium alloys for use up to 1250ºC (2280ºF). |
| Nifethal NiFe alloys | Low-resistivity nickel-iron alloys with high temperature coefficient of resistance for use up to 600ºC (1110ºF). |
| Cuprothal CuNi alloys | Medium- and low-resistivity copper-nickel alloys for use up to 600ºC (1110ºF). |
Resistance tolerance
Standard resistance tolerance for wire is listed in the following table. Wire can be supplied to closer tolerance on request.
The data is valid at 20°C (68°F).
| Wire size Ø mm (inch) | Resistance tolerance % |
|---|---|
| <0.127 (0.005) | +/- 8 |
| >0.127 (0.005) | +/- 5 |
Delivery forms
Resistance wire is delivered on spools, in coils, in pail pac or as straightened lengths.
Marking
Each spool/package of wire is supplied with a label or tag showing alloy type, nominal size, tara and net weight, resistance W/m (W/ft), charge number and a reference number.
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