Alloy steel and article made therefrom
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United States of America Patent
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Jun 27, 2006
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app pub date -
Nov 24, 2003
filing date -
Nov 24, 2003
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A relatively high strength high toughness medium Carbon Copper-Nickel-Chromium alloy steel and method that eliminates and/or reduces the use of scarce, expensive alloying elements and is lower in cost than existing high strength high toughness alloy steels with comparable strength and toughness properties. In a first embodiment, the alloy steel is comprised of by weight about 0.40 1.00% Copper, about 2.50 8.00% Nickel, and about 0.80 3.50% Chromium. In a second embodiment the alloy steel is comprised of by weight about 0.55 0.70% Copper, about 1.0 6.0% Nickel, and about 1.0 2.2% Chromium.
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