It has laminated layers of 0.015 "purified natural graphite flake that has been acid washed, expanded under heat, and then compressed into sheets with a minimum graphite content of 98% .This sheet contains a 0.004" thick 316 stainless steel tang insert (36 tangs / sq in.) bonded with a proprietary adhesive This adhesive makes up less than 1% of the total laminated weight.
Fiberglass cloth