| Kanthal AB, Sweden, a Sandvik company specialising in the production and supply of resistance heating materials for industrial furnace and domestic appliance applications, has recently introduced five new grades of �Super� heating elements that complete the company�s Superthal range of heating modules. Designed for use at very high temperatures, the key feature of the new Kanthal super elements is that they work directly in the furnace atmosphere without muffles to protect them. Suitable for nitrogen, hydrogen, vacuum and mixtures of endogas and reducing furnace atmospheres, these new elements are ready-made for use in production and laboratory furnaces in the glass, steel, electronics, ceramics and heat-treatment industries.
Kanthal Super ER offers the benefit of working in a range of different furnace atmospheres, making it possible to operate firing cycles where the atmosphere condition can be altered during the cycle between oxidising, inert, endogas and reducing atmospheres. This new grade is suitable for temperatures up to 1,600�C. Their main applications are seen as most types of sintering furnaces working in reducing atmospheres such as dry hydrogen, nitrogen and endogas.
Kanthal Super RA has been designed to work in nitrogen atmospheres at temperatures above 1,250�C and to minimise the problems of element scaling caused by nitration. The new grade withstands nitration at high-temperature better than any other existing Kanthal Super element. Main applications are in different types of industrial furnace for heat treatment, forging and sintering.
Other new grades include:
- Kanthal Super HT that features outstanding high-temperature properties in air or oxygen (cycling conditions), and operates at a maximum temperature of 1,830�C, making it suitable for laboratory and high-temperature process furnaces;
- Kanthal Super NC that is designed for use in clean process heating at temperatures of up to 1,800�C. it offers minimum scaling of the element surface and is particularly suitable in the research and electronic industries;
- Kanthal Super LC that features an element configuration which creates a higher resistance than ordinary �U� type elements. It is suitable for temperatures of up to 1,550�C in air/oxidising atmospheres.
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