... Molecular Weight Polyethylene(UHMWPE), also called High Strength High Modulus PE fiber, which is featured of highest tenacity, low weight, soft ... resistance, high heat resistance, negative heat expansion, light weight, environmentally friendly qualities,which guarrantee the steady ballistic ... figures. USA NIJ Standard 0101.04 Class Test-bullet Bullet Weight (g) (gr.) Bullet Velocity (m/s) (ft ...