Portion of Sheet Material

FIG. 1 is a front perspective view of a portion of sheet material, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof, opposite that of FIG. 4 ;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dash-dot-dash lines in the drawings of the portion of sheet material form no part of the claimed design and form the boundary of the claim. Further, the areas deemphasized and illustrated in halftone depict areas of the portion of sheet material that form no part of the claimed design.