Elastic Properties Variables

As of Thermo-Calc version 2025b, elastic properties are available with Thermo‑Calc and the TCS Ti/TiAl-based Alloys Database (TCTI) (TCTI6 and newer), TCS Steel and Fe-alloys Database (TCFE) (TCFE14 and newer), TCS High Entropy Alloys Database (TCHEA) (TCHEA8 and newer), and TCS Ni-based Superalloys Database (TCNI) (TCNI13 and newer). These elastic properties will be added to additional databases over time. Subscribe to our newsletter to be kept up-to-date on the latest product releases, webinars, user group meetings, applications examples, and more.

About the Elastic Properties.

For information about thermophysical properties such as surface tension, viscosity, etc, see About Thermophysical Properties Data Parameters.

Elastic Constants and Moduli Variables

The so-called classic syntax is used in the examples below. It can be used in Console Mode or when using the APIs, e.g. TC-Python or TC-Toolbox for MATLAB®. Graphical Mode in Thermo‑Calc has readable names for all of these.

The quantities corresponding to individual elastic constants and elastic moduli (derived from the elastic constants) can be calculated in Console Mode for individual phases or for all phases. The results can be shown in the POLY module with the command SHOW_VALUE or shown as a plot in the POST module with the command PLOT_DIAGRAM using:

• Cij(<phase name>) or Cij(*)
• Bulk modulus: BULKMOD(<phase name>) or BULKMOD(*)
• Shear modulus: SHEARMOD(<phase name>) or SHEARMOD(*)
• Young's modulus: YOUNGMOD(<phase name>) or YOUNGMOD(*)

Variables	Unit	Description
BULKMOD	Pascal	Bulk modulus
SHEARMOD	Pascal	Shear modulus
YOUNGMOD	Pascal	Young's modulus
Cij	Pascal	Elastic constants i.e. C11, C12, C13, C33, or C44