Kanthal® Super NC is a heating element with special features, designed to meet the demand for clean process heating in the research and electronics industries.
Scaling of the element surface, which occurs in all heating elements, is reduced to a minimum. The metal content is also reduced which means less diffusion into the furnace atmosphere from the element. The content of Fe, Ni and Cu (and other elements on request) can be verified and confirmed in a certificate of analysis. The electrical properties are the same as for Kanthal® Super 1800.
Special features
- Extra clean and adherent surface glaze
- Lower metal content
- Certificate of analysis
- Can be used in air/oxidizing atmospheres up to 1800°C (3270°F)
- 25% higher bending strength at room temperature compared to Kanthal Super 1800
- Standard and specially designed elements
Typical areas of application include all types of clean processes in the research and electronics industries.
Mechanical properties
| Hardness |
Bending strength |
Compression strength |
Fracture toughness |
| HV |
|
|
KIC |
| GPa |
MPa |
MPa |
MPa√m |
| 9 |
450 ±10% |
1400-1500 |
3-4 |
Tensile strength at elevated temperatures
| Temperature °C (°F) |
MPa |
| 1500 (2820) |
100±25% |
Physical properties
| Density g/cm3 (lbs/in3) |
5.6 (0.20) |
| Emissivity |
0.70-0.80 |
| Temperature °C (°F) |
20-600 (68-1110) |
600-1200 (1110-2190) |
| W m-1 K-1 |
30 |
15 |
| Coefficient of linear expansion 10-6/K |
7-8 |
| Specific heat capacity at 20°C (68°F) kJ kg-1 K-1 |
0.42 |
| Maximum operating temperature in air °C (°F) |
1800 (3270) |
