Our Steel Defender Ballistic Lite Body Armor Plates are manufactured specifically for us from 3/16" thick 500 Brinell hardness armor plate steel which exhibits high-hardness and are certified N.I.J. Threat Level lll (M). Level III (M) is a certification rating that includes all hand gun calibers and smaller rifle calibers. This plating is rated to stop 5 rounds of 7.62 x 39. 500 Brinell hardness armor plate steel is used to stop high velocity projectiles, i.e., bullets. This armor steel plate is particularly useful in protecting against blunt trauma, knives and firearms. The N.I.J threat level is determined by 3 factors – the size of the round that the product is meant to defend, the speed at which that round is traveling, and the distance the round will travel before reaching the target.
Steel Defender steel is quenched and tempered at very high temperatures to sustain a tough surface for the best levels of protection.