PDC Bit Body Material
The PDC bit body may be 

- Steel Body :

- The bit body is forged or milled from steel (steel-bodied bits).

- The cutters on a steel body bit are manufactured as studs.

- The stud can be set with a fixed back rake and/or side rake.

- Field experience with the steel body bit indicates that face erosion is a problem, but this has been overcome to some extent by applying a hard-facing compound.

- Steel body bits also tend to suffer from broken cutters due to limited impact resistance.
https://www.drillingmanual.com/pdc-bit-body-design/