McDanel Sialon ST thermocouple sheaths (TCS) are used extensively for continuous temperature measurement in non-ferrous metals. In molten aluminum and aluminum alloys, Sialon ST is thermal shock resistant, non-wetting, does not contaminate the melt, provides for continuous, reliable temperature measurement and is resistant to degradation even in aggressive aluminum lithium alloys. The excellent corrosion resistance of Sialon ST allows the use of thinner walls, thereby providing faster response time and improved accuracy. TCS tubes are commercially available from stock in four standard diameters with plain or grooved ends. Custom engineered sizes and configurations are available on request.
Sialon ST is uniquely qualified for use in molten non-ferrous metal applications (e.g. zinc, aluminum, copper, and gold), corrosive chemicals, and abrasive fluids at temperatures exceeding 1000ºC. It is gas tight, chemically inert, highly wear resistant, and exceptionally corrosion resistant.