In RFEM and RSTAB, you can save your own materials in a user-defined material library. The material library provides buttons for creating, editing, and deleting user-defined materials.
To create a new material, select an existing one as a template and customize its properties. The user-defined materials are saved in the "Materials_User.dbd" file and are available for all models. The storage location of the user-defined library can be defined in the program options.