Kanthal A-1 2.5 × 25 mm is a FeCrAl (iron-chromium-aluminium), ferritic resistance heating strip. Because strip offers much more surface than wire of the same cross-section, it is preferred for wall-hung zigzag elements in high-power furnaces; one metre has a resistance of 0.0232 Ω at 20 °C. High-temperature industrial furnaces: heat treatment, ceramics, glass and steel.
Technical data
| Alloy | Kanthal A-1 — FeCrAl (iron-chromium-aluminium), ferritic |
|---|---|
| Thickness × width | 2.5 × 25 mm |
| Cross-section | 62.5 mm² |
| Resistance (20 °C) | 0.0232 Ω/m |
| Weight | 444 g/m |
| Surface area | 550 cm²/m |
| Surface/resistance ratio (η) | 23707 cm²/Ω |
| Resistivity | 1.45 Ω·mm²/m |
| Density | 7.10 g/cm³ |
| Max. operating temperature (air) | 1400 °C (element temperature) |
Quick calculation: for a required power P (W) at voltage U (V), the total resistance is R = U²/P and the strip length ≈ R / 0.0232 m. Contact us before ordering about surface load and zigzag geometry. Image is representative.
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 A-1 strip 2.5x25, resistance strip, heating strip, zigzag element, furnace heating element, Kanthal