| Wire elements | ||||||
| Element systems | Spiral | Spiral | Porcupine | Rod over bend | Corrugated | Looped |
| Supports | Ceramic tubes | Grooves | Ceramic tubes | Metallic rods | Metallic staples | Ceramic tubes |
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| Material | Sillimanite | Chamotte grade 28 | Sillimanite | Kanthal® APM | U-shaped Kanthal® nails | Sillimanite |
| Max. furnace temperature, °C | 1300 | 1250 | 800 | 1300 | 1300 | 1300 |
| Max. wall loading at 1000°C furnace temperature, kW/m2 | 40 | 35 | – | 50 | 50 | 60 |
| Max. surface load at 1000°C furnace temperature, W/cm2 | 3 – 4 | 3 – 4 | – | 5 – 6 | 3 – 6 | 5 – 6 |
| Wire diameter, d, mm | 2.0 – 6,5 | 2.0 – 5.0 | 1.0 – 6.5 | ≥ 5.0 | 2.0 – 5.0 | ≥ 5.0 |
| Strip thickness, t, mm | – | – | – | – | – | – |
| Strip width, w, mm | – | – | – | – | – | – |
| Outer coil diameter, D, mm | 12 – 14 d | 5 – 6 d | – | – | – | – |
| Max. loop length at 1000°C furnace temperature, mm | – | – | – | 250 | 100 | 250 |
| Min. pitch at max. loop length, mm | 3d | 2d | 3d | 40 | 40 | 40 |
| Strip elements | ||||
| Element systems | Deep-corrugated | Deep-corrugated | Deep-corrugated | Corrugated |
| Supports | Ceramic cup locks | Ceramic bushes | Ceramic tubes | Grooves |
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| Material | Cordierite or mullite | Cordierite or mullite | Sillimanite | Chamotte grade 28 |
| Max. furnace temperature, °C | 1300 | 1300 | 1300 | 1300 |
| Max. wall loading at 1000°C furnace temperature, kW/m2 | 60 | 60 | 60 | 20–40 |
| Max. surface load at 1000°C furnace temperature, W/cm2 | 5–6 | 5–6 | 5–6 | 3–4 |
| Strip thickness, t, mm | 2.0–3.0 | 2.0–3.0 | 2.0–3.0 | 1.5–3.0 |
| Strip width, w, mm | 8–12 t | 8–12 t | 8–12 t | 8–12 t |
| Outer coil diameter, D, mm | – | – | – | – |
| Max. loop length at 1000°C furnace temperature, mm | 250 | 250 | 250 | 2–3 w |
| Min. pitch at max. loop length, mm | 50 | 50 | 50 | 1.5 w |
