Creo Simulate > Modeling Structure and Thermal Problems > Properties > Materials > Materials > Edit a Material > To Edit a Material
  
To Edit a Material
By editing a material, you change the material properties on all the entities to which it is assigned.
1. Click Home > Materials. The Materials dialog box opens.
2. Select a material from the Materials in Model list.
3. Click . The Material Definition dialog box appears.
4. Edit the required definitions in the dialog box.
As a quick alternative to this procedure, you can select the material that you want to edit from the Model Tree. Right-click the material or the material assignment and click Edit Definition on the object action menu or double-click the material to edit it.