Titanium alloys
AssigneeThe Boeing Company
InventorsRoland E. Curtis, Peter T. Finden
Life of this patent
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Abstract
Disclosed are alloys of titanium possessing improved combinations of strength, toughness and stress corrosion resistance. These titanium alloys contain from 3.8 to 5.3% Al, up to 4.0% Zr, 2.5 to 4.25% Mo, 2.5 to 4.25% V, up to 1.25% Fe, up to 2.2% Cr and up to 1.0% Ni.
Claims8
Alpha-beta phase titanium base alloys consisting essentially of from 3.9% to 4.7% aluminum, from 2.5% to 3.5% zirconium, from 2.5% to 3.5% molybdenum, from 2.5% to 3.5% vanadium and from 1.6% to 2.0% chromium, and containing no more than about 0.13% oxygen, 0.05% nitrogen and 0.08% carbon, oxygen, nitrogen and carbon being impurities, the balance being essentially titanium.
Titanium alloys consisting essentially of from 4.1% to 4.9% aluminum, from 2.5% to 3.5% zirconium, from 3.25% to 4.25% molybdenum, from 3.25% to 4.25% vanadium and from 0.4% to 0.8% nickel, and containing no more than about 0.13% oxygen, 0.05% nitrogen and 0.08% carbon, oxygen, nitrogen and carbon being impurities, the balance being essentially titanium.
Dependencies are inferred from the claim text.