You can add materials to your project from the Engineering Data Material View. These materials can then be assigned to bodies in your model.
Locate the material you would like to use in your model.
By default, there are three favorite materials: Air, Water Liquid, and Structural Steel. If you would like to use other materials in your model, you must search for them. Use the search field to locate materials that match the search criteria you specify via the filtering options.
Hover the mouse over the desired material to highlight it.
Click the plus icon
next to the material name to add it to your project.
The name of the material is displayed in the project materials area of the Engineering Data Material View. It is also listed as a material object under the Materials folder in the Outline pane.