MIL-DTL-46100 Armor Plate, Steel, Wrought, High-HardnessThis specification covers quenched and tempered high-hardness wrought steel armor plate for lightweight armor applications for ordered thicknesses from 0.118 inches \(3 mm\) up to an ordered thickness of 2.000 inches \(50.8 mm\), inclusive \(see 6.1, 6.2, and 6.3\).