Choose Application menu→Properties→Material Table.
In the Solid Edge Material Table dialog box, in the Material box, type the name you want.
Use the options on the dialog box to define the material, face style, fill style, Advanced Rendering or Gauge properties you want, then click Add To Library.
Tip:
To edit or delete an existing material, select it from the list, then click Update In Library or Delete From Library.
The material names and property sets are stored in an external file, material.mtl.
The material and mechanical properties are maintained when you place the part in an assembly, render the assembly with Advanced Rendering, create a parts list on a drawing, define a bill of materials, and so forth.