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High strength military steel

[Category : - OTHER]
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A low cost high hardness, high strength, and high impact toughness steel for military articles such as armor plates, bodies of deep penetrating bombs, and missiles. After oil quenching, refrigerating, and low tempering, the new steel consisting of (% wt.): C=0.35, Cr=1.32, Mo=0.35, W=0.52, Ni=2.66, Mn=0.85, Cu=0.51, Si=0.83, V=0.26, Ti=0.12, and a balance of Fe and incidental impurities has a HRC of 55, UTS of 301 ksi, YS of 233 ksi; and Charpy V-notch impact toughness energy of 26 ft-lbs.