Thermo-Calc Software AB is a Swedish materials science software and engineering consultancy company originally founded in 1997 as a spin-off from the KTH Royal Institute of Technology in Stockholm. The company is a global leader in computational materials engineering and CALPHAD-based (Calculation of Phase Diagrams) thermodynamic and kinetic calculations.
Through its dedicated engineering services division, Thermo-Calc Solutions AB (integrating the team and expertise of QuesTek Europe AB), the organization provides specialized consulting, research and development, and materials design support. The company assists industrial clients across aerospace, automotive, energy, and process sectors in screening, selecting, and designing optimal alloy chemistries and predicting material performance across varying process environments.