Fibreglass
Polyurethane
Polycarbonate
Boron Carbide
Silicon Carbide
HHA Steel
Alumina Oxide
Aluminium
Titanium
Titanium Oxide
UHMWPE (Dyneema?, Spectra?)
Aramid (Kevlar?, Twaron?, Goldflex?)
Example of materials available:
Titanium
Aluminium