Thermocouple protection tubes
Thermocouple protection tubes (pyrometer protection tubes) in a wide range of high-temperature corrosion resistant materials. The Sandvik program includes materials suitable for all types of shielding gases and environments covering operating temperatures up to 1200ºC (2190ºF).
Sandvik thermocouple protection tubes are characterized by long service life and contribute to reduced maintenance costs in, for example, the metal, glass and petrochemical industries.
Prolong service life with Sandvik 353 MA
The high-performance material Sandvik 353 MA* brings particular benefits to thermocouple applications. One of our customers, who previously used tubes of Alloy 600 type, more than doubled the service life of their thermocouple protection tubes by changing to Sandvik 353 MA. In this case the tubes were used in the flue gas zone of the pre-bake area of the smelter in an aluminium plant.
Thermocouple protection tube materials (other grades can be offered on request)
|Max. operating temp. ºC (ºF)||Typical application areas|
|Sandvik 253 MA*
|1100ºC (2010ºF)||For oxidizing and sulfidizing conditions.|
|1100ºC (2010ºF)||For oxidizing conditions.|
|Sandvik 353 MA*
|1150ºC (2100ºF)||For oxidizing, nitriding and carburizing conditions as well as in endothermic gas or hydrogen gas (H2).|
|800ºC (1470ºF)||For oxidizing and sulfidizing conditions as well as for hydrogen gas (H2) containing environments.|
|1170ºC (2140ºF)||For oxidizing, nitriding and carburizing conditions as well as for salt melts.|
|1170ºC (2140ºF)||For oxidizing, nitriding and carburizing conditions.|
|1100ºC (2010ºF)||For carburizing and nitriding conditions.|
|1200ºC (2190ºF)||For oxidizing, carburizing and sulfidizing conditions as well as for hydrogen (H2) containing environments.|
*253 MA and 353 MA are trademarks owned by Outokumpu OY