Creo Topology Optimization > Model Setup > Materials > To Assign a Material—Topology Optimization
  
To Assign a Material—Topology Optimization
1. Click Home > Material Assignment. The Material Assignment dialog box opens.
2. Enter a name for the material assignment or use the default name.
3. From the References list, select Components or Volumes for material assignment.
4. Select model references for material assignment.
5. In the Properties area, select the existing materials of the model from the Material list. If you do not see the material that you want, click More to select materials from the library.
For details about assigning materials, see the Creo Simulate help.