The Material Sweep (

) study step is a special case of Parametric Sweep, where the solver sweeps over materials defined under a 
Switch node defined under 
Global Definitions>Materials (see 
Switch for Materials). After running a material sweep, you can select from the swept materials from a 
Switch list in the 
Data section of plot nodes, for example, to postprocess and visualize the material sweep (solutions for the different materials that the sweep includes).
 
    Add information to the table for each column: Switch, 
Cases, and 
Case numbers. Use the 
Move Up (

), 
Move Down (

), 
Add (

), and 
Delete (

) buttons under the table to organize the data. Use the 
Add (

) button to add a list of existing material 
Switch nodes in the 
Switch column. From the list under 
Cases, select 
All to sweep over all material nodes under the switch. For 
User defined, define a list of materials to switch between as positive integers, representing the first material from the top under the 
Switch node as 1, the second function as 2, and so on.