Kanthal APM Ø3.5 mm is a FeCrAl, powder metallurgical (dispersion strengthened) resistance heating wire. One metre has a resistance of 0.1507 Ω at 20 °C; typical use at this diameter is industrial furnace coils and heat-treatment furnace elements. Furnace elements around 1400 °C where form stability matters; long life.
Technical data
| Alloy | Kanthal APM — FeCrAl, powder metallurgical (dispersion strengthened) |
|---|---|
| Wire diameter | 3.5 mm |
| Cross-section | 9.621 mm² |
| Resistance (20 °C) | 0.1507 Ω/m |
| Weight | 68.3 g/m · 1 kg ≈ 15 m |
| Surface area | 110.0 cm²/m |
| Surface/resistance ratio (η) | 729.58 cm²/Ω |
| Resistivity | 1.45 Ω·mm²/m |
| Density | 7.10 g/cm³ |
| Max. operating temperature (air) | 1425 °C (element temperature) |
Quick calculation: for a required power P (W) at voltage U (V), the total resistance is R = U²/P and the wire length ≈ R / 0.1507 m. Contact us before ordering to select coil diameter, pitch and surface load; we can also quote ready-wound coils or complete heating elements.
Resistance, weight and surface values are calculated at 20 °C from the manufacturer's resistivity and density; resistance rises somewhat at operating temperature (Ct factor). The manufacturer datasheet prevails for exact values.
For price per metre or per kilogram and lead time, use the Request a Quote button or call +90 533 945 27 94.
Tags: Kanthal APM Ø3.5, Kanthal APM wire, resistance wire 3.5 mm, heating wire, furnace heating wire, Kanthal