General information

FactSage©, one of the largest fully integrated database computing systems in chemical thermodynamics in the world, was introduced in 2001 and is the fusion of the FACT-Win / F*A*C*T and ChemSage / SOLGASMIX thermochemical packages. FactSage is the result of over 20 years of collaborative efforts between Thermfact/CRCT (Montreal, Canada) www.crct.polymtl.ca and GTT-Technologies (Aachen, Germany) www.gtt-technologies.de.

The FactSage package runs on a PC operating under Microsoft Windows® and consists of a series of information, database, calculation and manipulation modules that access various pure substances and solution databases. FactSage has several hundred industrial, governmental and academic users in materials science, pyrometallurgy, hydrometallurgy, electrometallurgy, corrosion, glass technology, combustion, ceramics, geology, etc. It is used internationally in graduate and undergraduate teaching and research.

Users have access to databases of thermodynamic data for thousands of compounds as well as to evaluated and optimized databases for hundreds of solutions of metals, liquid and solid oxide solutions, mattes, molten and solid salt solutions, aqueous solutions, etc. The FactSage software automatically accesses these databases. The evaluated databases for oxides, slags, mattes, etc. have been developed by optimization of literature data using advanced modeling techniques, several of which have been developed at the CRCTFactSage can also access the databases for alloy solutions developed by the international SGTE Group, and the databases for steels, light metal alloys and other alloy systems developed by The Spencer GroupGTT-Technologies and the CRCT. For detailed information on the various databases click on Database Documentation.

With FactSage you can calculate the conditions for multiphase, multicomponent equilibria, with a wide variety of tabular and graphical output modes, under a large range of constraints. For example, general N-component phase diagram sections can be easily generated with a wide choice of axis variables; matte/metal/slag/gas/solid equilibria can be accurately calculated, tabulated and plotted for industrial systems; multicomponent predominance and EpH diagrams can be readily produced; the course of equilibrium or non-equilibrium solidification can be followed; complex heat balances can be computed; and so on.

For examples of input and output for the various FactSage modules click on:

For FactSage phase diagrams, publications, slide show presentations, articles, etc. that can be downloaded visit the Documentation section.

For answers to the most common questions click on Frequently Asked Questions.

  • FactSage 8.3 final version was released in October, 2023.
  • FactSage is available on CD-ROM and download for use on a PC running under Microsoft Windows.
    Minimum System Requirements: Equivalent to the minimum system requirements for running Microsoft Windows 10 operating system.
    Recommended System Requirements: Operating System: Microsoft Windows 10 or above CPU: Intel Core i7 2.8 GHz (or an equivalent AMD processor) or better RAM: 16 GB or more Storage: 7200 RPM or better HDD or SSD.
  • Normally the FactSage package includes the FACT or SGTE compound and solution databases with maintenance, support and updates to programs and databases. Speciality databases are also available for steels, light metals, noble metals, etc. – for more information consult FactSage Database Documentation.
  • FactSage may be installed on any computer on a site, or on lap-tops used off-site by site personnel, where a site is defined as a plant, a research center, a divison of a major laboratory facilty, or a university department.
  • Two hardware security blocks (“dongles”) are supplied. When plugged into the USB or printer port of a computer, these dongles enable FactSage to be used by that computer. The dongles can be easily moved from one machine to another. Additional dongles are available.
  • A network server installation at the site is also available.
  • Special academic rates are available.

For ordering the FactSage package and other info please consult the List of FactSage Agents.

For internet articles that cite or employ FactSage, click on FactSage Publications.