Armored Combat:Equipment standards - Armor - Rigid materials

Rigid materials

1. In armored combat, when we say "rigid materials", we mean:
   1. Steel of no less than 1/20 inch (1.27 mm) (18 gauge), or aluminum of no less than 5/64 inch (1.89 mm) (14 gauge).
   2. Other metals of sufficient thickness to give similar rigidity to those listed above to include treated steel or aluminum.
   3. High-impact-resistant plastics such as ABS or polyethylene of sufficient thickness to give similar rigidity to those listed above.
   4. 11/64 inch (4.4 mm) or 11 oz thick stiff leather that has been hardened in hot wax, soaked in polyester resin (properly catalyzed), or treated in such a manner as to permanently harden the leather.
   5. Two layers of untreated 11/64 inch (4.4 mm) or 11 oz thick stiff leather.