Abstract: A titanium-base alloy, and weldment made therefrom, consisting essentially of, in weight percent, aluminum 4 to 5.5, preferably 5.0, tin up to 2.5, preferably 0.5 to 1.5 or 1; zirconium up to 2.5, preferably 0.5 to 1.5 or about 1; vanadium 0.5 to 2.5, preferably 0.5 to 1.5 or about 1; molybdenum 0.3 to 1, preferably, 0.66 to 1 or about 0.8; silicon up to 0.15, preferably 0.07 to 0.13 or about 0.1; oxygen 0.04 to 0.12, preferably 0.07 to 0.11 or about 0.09; iron 0.01 to 0.12, preferably 0.01 to 0.09 or about 0.07 and balance titanium and incidental impurities.

Abstract: A metastable beta titanium-base alloy of Ti-Fe-Mo-Al, with a MoEq. greater than 16, preferably greater than 16.5 and preferably 16.5 to 20.5 and more preferably about 16.5. The alloy desirably exhibits a minimum percent reduction in area (% RA) of 40%. Preferred composition limits for the alloy, in weight percent, are 4 to 5 Fe, 4 to 7 Mo, 1 to 2 Al, up to 0.25 oxygen and balance Ti.

Abstract: A titanium-base alloy characterized by a combination of good oxidation resistance at temperatures of at least 1500.degree. F. and good cold rollability. The alloy consists essentially of, in weight percent, molybdenum 14 to 20, niobium 1.5 to 5.5, silicon 0.15 to 0.55, aluminum up to 3.5, oxygen up to 0.25 and balance titanium. Preferably, molybdenum is 14 to 16, niobium is 2.5 to 3.5, silicon is 0.15 to 0.25, aluminum is 2.5 to 3.5 and oxygen is 0.12 to 0.16. The alloy may be in the form of a cold reduced sheet or foil product having a thickness of less than 0.1 inch. This product may be produced by cold rolling to effect a reduction within the range of 10 to 80%.

Abstract: An alpha-beta titanium base alloy comprising, in weight percent, 0.04 to 0.10 silicon and 0.03 to 0.08 carbon, characterized by an increase in strength over that of the alloy lacking the silicon and carbon additions. The alloy may additionally comprise 6 aluminum, 4 vanadium, up to 0.3 iron and up to 0.25 oxygen.