Creo Simulate > Modeling Structure and Thermal Problems > Properties > Materials > Materials > Delete a Material > To Delete a Material
To Delete a Material
1. Click Home > Materials. The Materials dialog box appears.
2. Select a material from the Materials in Model list.
3. Click . If you did not previously assign the material to an entity, the material is deleted from the model database.
4. Click OK to delete the material. Creo Simulate deletes the material from your model and the model database.
* If a material is referenced by other entities, you must first remove the dependencies before deleting the material.  
As a quick alternative to this procedure, you can select the material that you want to delete from the Model Tree. Right-click the material and click Delete on the object action menu.