Lower-cost, ultra-high-strength, high-toughness steel
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United States of America Patent
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Jun 9, 2015
Grant Date -
Sep 16, 2010
app pub date -
Feb 20, 2009
filing date -
Feb 20, 2008
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Abstract
A non-stainless steel alloy includes, in combination by weight, about 0.20% to about 0.33% carbon, about 4.0% to about 8.0% cobalt, about 7.0 to about 11.0% nickel, about 0.8% to about 3.0% chromium, about 0.5% to about 2.5% molybdenum, about 0.5% to about 5.9% tungsten, about 0.05% to about 0.20% vanadium, and up to about 0.02% titanium, the balance essentially iron and incidental elements and impurities.
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