History of FactSage from version 5.0 to 8.4
FactSage 8.4 is the latest release as of June 2026.
FactSage debuted in 2001, uniting the powerful capabilities of FACT-Win 3.05 and ChemSage 4.0. This marked the beginning of its legacy, starting directly from Version 5.0. This section highlights the impressive milestones of FactSage's ongoing evolution. We invite you to visit the developer’s website for more extensive information.
Details of FactSage Version Upgrades
With each new version upgrade, FactSage introduces advanced new features alongside comprehensive additions and updates to its thermodynamic databases. The table below outlines the specific enhancements for each version. The numbers following "FactPS" and "SGPS" indicate the total number of compound entries included, which generally expands with every upgrade. Please note, however, that database contents are continuously evaluated and refined to ensure the highest quality, meaning entry counts may occasionally decrease during an upgrade if anomalies are resolved.
| Year | Version | Major New Features, Database Addtions & Updates |
|---|---|---|
| 2025 | FactSage 8.4 |
New Features: Marco Editor, Alloy grade input, FactFlow, FactProSim New Databases: FTionx, SGTE2024 database Upgrades: FactPS(5203), FToxid, FTsalt, FTlite, FSstel, FScopp, FSlead, SpMCBN |
| 2023 | FactSage 8.3 |
New Features: Multiple Equilib and Phase Diagram instances, Supporting the calculation of closed loop (island) phase boundaries in phase diagrams, Optimization using driving force (Calphad Optimizer), Equi2Py New Databases: Coke Database Upgrades: FactPS(5038), FToxid, FTsalt, FTlite, FSstel, FScopp, FSlead, SpMCBN |
| 2022 | FactSage 8.2 |
New Features: Calphad Optimizer, Add-on, Maximum species increased from 5000 (v8.2) to 7000, Accelerated Viscosity calculation (approximately 10 times faster than v8.1) New Databases: FTsulf, SGTE2022 Database Upgrades: FactPS(4952), FToxid, FTmisc, FTsalt, FTlite, FSstel, FTcopp, FSlead, SpMCBN, SGTE2020, TDmeph, TDnucl |
| 2021 | FactSage 8.1 |
New Features: Virtual elements, Thermal conductivity of microstructures, Saving history files Database Upgrades: FactPS(4959), FToxid, FTsalt, FTlite, FThall, FSstel, SpMCBN, SGTE2020, TDmeph, TDnucl |
| 2020 | FactSage 8.0 |
New Features: New file structure, Automatically update the lisence file, New Slide Shows, Enhanced usability, TDB converter upgrade. New Databases: SGTE2020 Database Upgrades: FactPS(4957), FToxid, FTsalt, FThall, FSstel, SpMCBN, SGnobl, TDmeph, TDnucl |
| 2019 | FactSage 7.3 |
New Features: Maximum solution phases increased from 150 (v7.2) to 200, TDB converter, FactSage Updates Database Upgrades: FactPS(4920), SGPS(3927), FToxid, FTsalt, FTlite, FSstel, FScopp, FSlead, SpMCBN, SGnobl |
| 2018 | FactSage 7.2 |
New Features: Faster calculation speeds, Better phase diagram calculation performance, Improved usability in phase diagram editing, Reploting aqueous phase diagram as true Eh-pH phase diagram New databases: SGTE 2017 Database Upgrades: FactPS(4869), SGPS(3842), FToxid, FTlite, SpMCBN |
| 2017 | FactSage 7.1 |
New Features: Maximum solution phases increased from 40 (v7.0) to 150, Aqueous Phase Diagrams, Scheil-Gulliver Constituent Diagrams Database Upgrades: FactPS, FToxid, FTlite, FSstel |
| 2015 | FactSage 7.0 |
New Features: Solution and new solution database format, isobars and iso-activity lines New Databases: SGTE2014, FTnucl, SpMCBN Database Upgrades: Fact(4868), FToxid, FTOxCN, FTmisc, FTilte, FSstel, SGnobl |
| 2013 | FactSage 6.4 |
New Features: Reciprocal phase diagram, Paraequilibrium calculations, Compound Species Selection (suppress duplicates) New Databases: TDmeph Database Upgrades: FactPS(4776), FToxid, FTsalt, FThall, FTfrtz, FTOxCN, FTlite, FSstel |
| 2012 | FactSage 6.3, 6.3.1 |
New Features: Polythermal projections of the solidus surfaces, Eh - pH Pourbaix diagrams with solution phases, FactSage-TEACH New Databases: FTOxCN, FTfrtz Database Upgrades: FactPS(4776), FTsalt, FThall, FTmisc, SGPS(3768 from 3411), FSlead, FSstel, FTupsi |
| 2010 | FactSage 6.2 |
New Features: Viscosity, enthalpy-composition (H-X) diagram Database Upgrades: FactPS(4557), FToxid, FTmisc, FSstel, SGPS, SGnobl |
| 2009 | FactSage 6.0, 6.1 |
New Feature: Polythermal projections of the liquidus surfaces New Databases: SGTE2007, FTlite, SGnobl Database Upgrades: FactPS(4549), FToxid, FTsalt, FTpulp, FTmisc, FSstel |
| 2007 | FactSage 5.5 |
New Features: Maximum elements in equilibrium calculations increased from 32 to 48. Database Upgrades: FToxid, FTsalt, FSupsi. |
| 2005, 2006 | FactSage 5.4, 5.4.1 |
New Features: Target calculation for the composition of a solution phase. Calculated phase diagrams are integrated into the database documentation. New Databases: FScopp, FSlead, FSupsi, SGnucl, TDnucl. Dabase Upgrades: FactPS(4538). |
| 2004 | FactSage 5.3, 5.3.1 |
New Features: Maximum solution phases increased from 30 (v5.2) to 40. New Databases: FToxid, FTsalt, FThall, FThelg, FTmisc, FSlite, FSstel, FSnobl and SGTE2004. Database Upgrades: FactPS (4517 from 4429 (v5.2)) |
| 2003 | FactSage 5.2 | New Features: Enhanced stability and accelerated processing speed for equilibrium calculations. |
| 2002 | FactSage 5.1 | New Features: Maximum elements in equilibrium calculations increased from 24 (v5.0) to 32. Macro features officially implemented. |
| 2001 | FactSage 5.0 | The Birth of FactSage |
