The Materials manager node within the Tools node contains the objects that represent the information from the material database.
When you create a new simulation, this node appears with its subnodes in the object tree as soon as you select a material model.
Its contents are grouped among three manager subnodes that represent phases: Gases, Liquids and Solids.
The source of the material database is a props.dbs file, located in the star subdirectory of your STAR-CCM+ installation directory. Details of the contents of this database are described in the section on the material database format. A link to an alternate database is possible through this node's properties.