Add-on Databases

Add-on Databases

This page has instructions on how to install ThermoTech databases, denoted TT—, to a new Thermo-Calc 2023a installation.

Note that for version 2019a and newer, it will no longer be possible to copy the TT-databases from the installation of Thermo-Calc 2018b or older.

How to Install ThermoTech Databases

  1. Install Thermo-Calc 2023a.
  2. Open the Thermo-Calc data directory in the Thermo-Calc installations, both for 2022b and 2023a. The default paths for this are:
    Linux and Mac: Default path: /usr/local/thermocalc//data
    Windows: Default path: C:\\Thermo-Calc\\data
  3. Copy the TT database folder from 2022b to the database folder of Thermo-Calc 2023a.

Should any questions occur, please contact us at

Special Instructions for Thermo-Calc 2021a

If you are updating from Thermo-Calc 2020b to Thermo-Calc 2021a, follow the additional instructions below after completing the instructions above:

  1. Download this tc_initd zip file.
  2. Unzip the file.
  3. Copy the unzipped file to the same data folder where you just pasted the TT database folder. When asked if you want to replace the tc_initd file that is currently there, say yes.

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