JMatPro® is a simulation software which calculates a wide range of materials properties for alloys and is particularly aimed at multi-components alloys used in industrial practice. Using JMatPro you can make calculations for: Stable and metastable phase equilibrium Solidification behaviour and properties Mechanical properties Thermo-physical and physical properties Phase transformations Chemical properties JMatPro includes a Java based user interface, with calculation modules using C/C++, and will run under any Windows OS (at least Windows 98). It will also run on multi-core machines with 32/64 bits OS. JMatPro has been designed so that it can be used by any engineer or scientist that requires materials properties as part of their everyday work. To this end, we take great care in the following points: extensive validation of the models to ensure sound predictions of the properties. fast and robust calculations. ease of use due to an intuitive user interface. extensive on-line help facility. powerful data management interface in order to browse through calculated properties. high level of user preferences settings. JMatPro — an acronym for Java-based Materials Properties — is a powerful software package developed for modeling complex commercial alloys and their property characteristics, including 1. Stable and metastable phase equilibria 2. Solidification simulations 2.1. Classical Scheil-Gulliver solidification model 2.2. Paraequilibrium Scheil-Gulliver solidification model 3. Mechanical properties 3.1. Creep 3.2. Stress-strain curves 3.3. High-temperature strength 3.4. High-temperature hardness 3.5. Jominy hardenability 4. Thermo-physical and physical properties 4.1. Enthalpy 4.2. Specific heat 4.3. Latent heat 4.4. Density 4.5. Thermal expansion 4.6. Volume change 4.7. Thermal conductivity 4.8. Electrical conductivity/resistivity 4.9. Liquid viscosity 4.10. Liquid diffusivity 4.11. Poisson's ratio 4.12. Young's module 4.13. Shear module 5. Phase transformations 5.1. TTT diagram calculations 5.2. CCT diagram calculations 5.3. Martensitic transformations 5.4. Gamma prime and gamma double prime coarsening in nickel-base alloys 5.5. Lattice mismatch between gamma and gamma prime phases in nickel-base alloys