Patent ID: 7357060

Claim:
A method of armoring a vehicle comprising the steps of sequentially: making a steel plate with a thickness of 4 mm to 15 mm of by weight 0.2 to 0.4% carbon, 0.3 to 0.8% silicon, 1.0 to 2.5% manganese, max. 0.02% phosphorous, max. 0.02% sulfur, max. 0.05% aluminum, max. 2% copper, 0.1 to 0.5% chromium, max. 2% nickel 0.1 to 1% molybdenum, 0.001 to 0.01% boron, 0.01 to 1% tungsten, max. 0.05% nitrogen, and balance iron and impurities; heating the steel plate to above the AC 3 temperature; deforming the heated steel plate in a press; while still in the press, cooling and curing the steel plate; and taking the deformed and cured steel plate out of the press and mounting it on the motor vehicle without further shaping steps.