Description

INCOTHERM ® alloy TD was specifically developed for thermocouple sheathing where high-temperature corrosion resistance and strength are required without the use of elements that may cause thermocouple degradation over time.

Alloy TD is a Ni-22% Cr alloy with the addition of 1.4% Si, 3.0% Mo and rare earth elements. Elements such as manganese and aluminum, which can diffuse through the thermocouple insulator and contaminate the

thermo-element wires leading to emf drift over time, are controlled at very low levels thus giving excellent long term performance. In addition, the composition is similar to the thermo-element wires, which further reduces the potential for the diffusion of elements between the alloys. The alloy has outstanding static and

cyclic oxidation resistance at temperatures up to 1250°C (2282°F) and possibly beyond. INCOTHERM alloy TD is highly resistant to oxide spalling and can therefore be considered for applications where contamination needs to be controlled at low levels, such as in glass making and electronic component processing.

 

Available Products and Specifications

Contact Special Metals for information.

 

Publication Number SMC-039

Copyright © Special Metals Corporation, 2004 (Sept 04)

 

INCOTHERM and INCONEL are trademarks of the Special Metals Corporation group of companies.

The data contained in this publication is for informational purposes only and may be revised at any time without prior notice. The data is believed to be accurate and reliable, but Special Metals makes no representation or warranty of any kind (express or implied) and assumes no liability with respect to the accuracy or completeness of the information contained herein. Although the data is believed to be representative of the product, the actual characteristics or performance of the product may vary from what is shown in this publication. Nothing contained in this publication should be construed as guaranteeing the product for a particular use or application.

 

INCOTHERM ® alloy TD was specifically developed for thermocouple sheathing where high-temperature corrosion resistance and strength are required without the use of elements that may cause thermocouple degradation over time.
Alloy TD is a Ni-22% Cr alloy with the addition of 1.4% Si, 3.0% Mo and rare earth elements. Elements such as manganese and aluminum, which can diffuse through the thermocouple insulator and contaminate the
thermo-element wires leading to emf drift over time, are controlled at very low levels thus giving excellent long term performance. In addition, the composition is similar to the thermo-element wires, which further reduces the potential for the diffusion of elements between the alloys. The alloy has outstanding static and
cyclic oxidation resistance at temperatures up to 1250°C (2282°F) and possibly beyond. INCOTHERM alloy TD is highly resistant to oxide spalling and can therefore be considered for applications where contamination needs to be controlled at low levels, such as in glass making and electronic component processing.